<?xml version="1.0" encoding="US-ASCII"?>
<!--XBRL Document Created with Wdesk from Workiva-->
<!-- -->
<link:linkbase xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodStartLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodStartLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/netLabel" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedNetLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedNetLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTerseLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedPeriodEndLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedPeriodEndLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedLabel" xlink:type="simple" />
  <link:roleRef roleURI="http://www.xbrl.org/2009/role/negatedTotalLabel" xlink:href="http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd#negatedTotalLabel" xlink:type="simple" />
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_BECB3616D047B7B4EBBB26633A8D0D91_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_BECB3616D047B7B4EBBB26633A8D0D91" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_BECB3616D047B7B4EBBB26633A8D0D91" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_BECB3616D047B7B4EBBB26633A8D0D91" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_BECB3616D047B7B4EBBB26633A8D0D91" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_38C8357FFF38CA35FAF226633A8DE3FF_terseLabel_en-US" xlink:label="lab_us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_38C8357FFF38CA35FAF226633A8DE3FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_38C8357FFF38CA35FAF226633A8DE3FF_label_en-US" xlink:label="lab_us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_38C8357FFF38CA35FAF226633A8DE3FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward" xlink:label="loc_us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_38C8357FFF38CA35FAF226633A8DE3FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_38C8357FFF38CA35FAF226633A8DE3FF" xlink:to="lab_us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_38C8357FFF38CA35FAF226633A8DE3FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateGrossAtCarryingValue_CA71AAB2C5BBDF96F9F726633A8D15D0_periodStartLabel_en-US" xlink:label="lab_us-gaap_RealEstateGrossAtCarryingValue_CA71AAB2C5BBDF96F9F726633A8D15D0" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance, beginning of period</link:label>
    <link:label id="lab_us-gaap_RealEstateGrossAtCarryingValue_CA71AAB2C5BBDF96F9F726633A8D15D0_label_en-US" xlink:label="lab_us-gaap_RealEstateGrossAtCarryingValue_CA71AAB2C5BBDF96F9F726633A8D15D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:label="loc_us-gaap_RealEstateGrossAtCarryingValue_CA71AAB2C5BBDF96F9F726633A8D15D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateGrossAtCarryingValue_CA71AAB2C5BBDF96F9F726633A8D15D0" xlink:to="lab_us-gaap_RealEstateGrossAtCarryingValue_CA71AAB2C5BBDF96F9F726633A8D15D0" xlink:type="arc" />
    <link:label id="lab_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3_terseLabel_en-US" xlink:label="lab_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions:</link:label>
    <link:label id="lab_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3_label_en-US" xlink:label="lab_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additions [Abstract]</link:label>
    <link:label id="lab_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3_documentation_en-US" xlink:label="lab_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additions.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AdditionsAbstract" xlink:label="loc_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3" xlink:to="lab_land_AdditionsAbstract_884DB3A12FA106BF2B2C26633A8DDDA3" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateOtherAcquisitions_80F448CCFC9F4C84003B26633A8D7FD3_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateOtherAcquisitions_80F448CCFC9F4C84003B26633A8D7FD3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisitions during the period</link:label>
    <link:label id="lab_us-gaap_RealEstateOtherAcquisitions_80F448CCFC9F4C84003B26633A8D7FD3_label_en-US" xlink:label="lab_us-gaap_RealEstateOtherAcquisitions_80F448CCFC9F4C84003B26633A8D7FD3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Acquisition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateOtherAcquisitions" xlink:label="loc_us-gaap_RealEstateOtherAcquisitions_80F448CCFC9F4C84003B26633A8D7FD3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateOtherAcquisitions_80F448CCFC9F4C84003B26633A8D7FD3" xlink:to="lab_us-gaap_RealEstateOtherAcquisitions_80F448CCFC9F4C84003B26633A8D7FD3" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateImprovements_AE0293FABCC4D17563EB26633A8D3309_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateImprovements_AE0293FABCC4D17563EB26633A8D3309" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Improvements</link:label>
    <link:label id="lab_us-gaap_RealEstateImprovements_AE0293FABCC4D17563EB26633A8D3309_label_en-US" xlink:label="lab_us-gaap_RealEstateImprovements_AE0293FABCC4D17563EB26633A8D3309" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateImprovements" xlink:label="loc_us-gaap_RealEstateImprovements_AE0293FABCC4D17563EB26633A8D3309" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateImprovements_AE0293FABCC4D17563EB26633A8D3309" xlink:to="lab_us-gaap_RealEstateImprovements_AE0293FABCC4D17563EB26633A8D3309" xlink:type="arc" />
    <link:label id="lab_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132_terseLabel_en-US" xlink:label="lab_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deductions:</link:label>
    <link:label id="lab_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132_label_en-US" xlink:label="lab_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deductions [Abstract]</link:label>
    <link:label id="lab_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132_documentation_en-US" xlink:label="lab_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deductions.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DeductionsAbstract" xlink:label="loc_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132" xlink:to="lab_land_DeductionsAbstract_59E120327224807CDAF926633A8D3132" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateCostOfRealEstateSold_2EA8F1AE472E963B53E926633A8DCDD7_negatedLabel_en-US" xlink:label="lab_us-gaap_RealEstateCostOfRealEstateSold_2EA8F1AE472E963B53E926633A8DCDD7" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Dispositions during period</link:label>
    <link:label id="lab_us-gaap_RealEstateCostOfRealEstateSold_2EA8F1AE472E963B53E926633A8DCDD7_label_en-US" xlink:label="lab_us-gaap_RealEstateCostOfRealEstateSold_2EA8F1AE472E963B53E926633A8DCDD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateCostOfRealEstateSold" xlink:label="loc_us-gaap_RealEstateCostOfRealEstateSold_2EA8F1AE472E963B53E926633A8DCDD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateCostOfRealEstateSold_2EA8F1AE472E963B53E926633A8DCDD7" xlink:to="lab_us-gaap_RealEstateCostOfRealEstateSold_2EA8F1AE472E963B53E926633A8DCDD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateGrossAtCarryingValue_8BFD62F0266C4CB9EF4626633A8DDE9B_periodEndLabel_en-US" xlink:label="lab_us-gaap_RealEstateGrossAtCarryingValue_8BFD62F0266C4CB9EF4626633A8DDE9B" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance, end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:label="loc_us-gaap_RealEstateGrossAtCarryingValue_8BFD62F0266C4CB9EF4626633A8DDE9B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateGrossAtCarryingValue_8BFD62F0266C4CB9EF4626633A8DDE9B" xlink:to="lab_us-gaap_RealEstateGrossAtCarryingValue_8BFD62F0266C4CB9EF4626633A8DDE9B" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAbstract_2E6D0ED7FC512386928627A9DDD6EE43_label_en-US" xlink:label="lab_us-gaap_RealEstateAbstract_2E6D0ED7FC512386928627A9DDD6EE43" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAbstract" xlink:label="loc_us-gaap_RealEstateAbstract_2E6D0ED7FC512386928627A9DDD6EE43" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAbstract_2E6D0ED7FC512386928627A9DDD6EE43" xlink:to="lab_us-gaap_RealEstateAbstract_2E6D0ED7FC512386928627A9DDD6EE43" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRealEstatePropertiesTable_FAE2DB6ADDC9F638E15427A9DDD652B7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRealEstatePropertiesTable_FAE2DB6ADDC9F638E15427A9DDD652B7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Real Estate Properties [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRealEstatePropertiesTable_FAE2DB6ADDC9F638E15427A9DDD652B7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRealEstatePropertiesTable_FAE2DB6ADDC9F638E15427A9DDD652B7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Real Estate Properties [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRealEstatePropertiesTable" xlink:label="loc_us-gaap_ScheduleOfRealEstatePropertiesTable_FAE2DB6ADDC9F638E15427A9DDD652B7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRealEstatePropertiesTable_FAE2DB6ADDC9F638E15427A9DDD652B7" xlink:to="lab_us-gaap_ScheduleOfRealEstatePropertiesTable_FAE2DB6ADDC9F638E15427A9DDD652B7" xlink:type="arc" />
    <link:label id="lab_srt_StatementGeographicalAxis_CCAF4C454F13D64FB99727A9DDD67778_terseLabel_en-US" xlink:label="lab_srt_StatementGeographicalAxis_CCAF4C454F13D64FB99727A9DDD67778" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:label id="lab_srt_StatementGeographicalAxis_CCAF4C454F13D64FB99727A9DDD67778_label_en-US" xlink:label="lab_srt_StatementGeographicalAxis_CCAF4C454F13D64FB99727A9DDD67778" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_StatementGeographicalAxis" xlink:label="loc_srt_StatementGeographicalAxis_CCAF4C454F13D64FB99727A9DDD67778" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_StatementGeographicalAxis_CCAF4C454F13D64FB99727A9DDD67778" xlink:to="lab_srt_StatementGeographicalAxis_CCAF4C454F13D64FB99727A9DDD67778" xlink:type="arc" />
    <link:label id="lab_srt_SegmentGeographicalDomain_AFF3D4CC2D0C137B250B27A9DDD78A19_terseLabel_en-US" xlink:label="lab_srt_SegmentGeographicalDomain_AFF3D4CC2D0C137B250B27A9DDD78A19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:label id="lab_srt_SegmentGeographicalDomain_AFF3D4CC2D0C137B250B27A9DDD78A19_label_en-US" xlink:label="lab_srt_SegmentGeographicalDomain_AFF3D4CC2D0C137B250B27A9DDD78A19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Geographical [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_SegmentGeographicalDomain" xlink:label="loc_srt_SegmentGeographicalDomain_AFF3D4CC2D0C137B250B27A9DDD78A19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_SegmentGeographicalDomain_AFF3D4CC2D0C137B250B27A9DDD78A19" xlink:to="lab_srt_SegmentGeographicalDomain_AFF3D4CC2D0C137B250B27A9DDD78A19" xlink:type="arc" />
    <link:label id="lab_stpr_AZ_1D9CDBFB48A5BE81BD3127A9DDD7FD55_terseLabel_en-US" xlink:label="lab_stpr_AZ_1D9CDBFB48A5BE81BD3127A9DDD7FD55" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Arizona</link:label>
    <link:label id="lab_stpr_AZ_1D9CDBFB48A5BE81BD3127A9DDD7FD55_label_en-US" xlink:label="lab_stpr_AZ_1D9CDBFB48A5BE81BD3127A9DDD7FD55" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">ARIZONA</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_AZ" xlink:label="loc_stpr_AZ_1D9CDBFB48A5BE81BD3127A9DDD7FD55" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_AZ_1D9CDBFB48A5BE81BD3127A9DDD7FD55" xlink:to="lab_stpr_AZ_1D9CDBFB48A5BE81BD3127A9DDD7FD55" xlink:type="arc" />
    <link:label id="lab_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31_terseLabel_en-US" xlink:label="lab_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Arizona and Florida</link:label>
    <link:label id="lab_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31_label_en-US" xlink:label="lab_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Arizona and Florida [Member]</link:label>
    <link:label id="lab_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31_documentation_en-US" xlink:label="lab_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Arizona and Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ArizonaandFloridaMember" xlink:label="loc_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31" xlink:to="lab_land_ArizonaandFloridaMember_9CCD1A769C3DD2AB69CA27A9DDD77F31" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstatePropertiesLineItems_9BD4CC4ABF5371D8087127A9DDD74822_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstatePropertiesLineItems_9BD4CC4ABF5371D8087127A9DDD74822" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate Properties [Line Items]</link:label>
    <link:label id="lab_us-gaap_RealEstatePropertiesLineItems_9BD4CC4ABF5371D8087127A9DDD74822_label_en-US" xlink:label="lab_us-gaap_RealEstatePropertiesLineItems_9BD4CC4ABF5371D8087127A9DDD74822" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Properties [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstatePropertiesLineItems" xlink:label="loc_us-gaap_RealEstatePropertiesLineItems_9BD4CC4ABF5371D8087127A9DDD74822" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstatePropertiesLineItems_9BD4CC4ABF5371D8087127A9DDD74822" xlink:to="lab_us-gaap_RealEstatePropertiesLineItems_9BD4CC4ABF5371D8087127A9DDD74822" xlink:type="arc" />
    <link:label id="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006_negatedLabel_en-US" xlink:label="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Property and casualty loss</link:label>
    <link:label id="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006_label_en-US" xlink:label="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain Loss On Business Interruption Insurance Recovery</link:label>
    <link:label id="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006_documentation_en-US" xlink:label="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gain Loss On Business Interruption Insurance Recovery</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_GainLossOnBusinessInterruptionInsuranceRecovery" xlink:label="loc_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006" xlink:to="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_A0EF8DBF355418FD80E627A9DDD84006" xlink:type="arc" />
    <link:label id="lab_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489_terseLabel_en-US" xlink:label="lab_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of capitalized and expensed repairs and maintenance</link:label>
    <link:label id="lab_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489_label_en-US" xlink:label="lab_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost Of Capitalized And Expensed Repairs And Maintenance</link:label>
    <link:label id="lab_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489_documentation_en-US" xlink:label="lab_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cost Of Capitalized And Expensed Repairs And Maintenance</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CostOfCapitalizedAndExpensedRepairsAndMaintenance" xlink:label="loc_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489" xlink:to="lab_land_CostOfCapitalizedAndExpensedRepairsAndMaintenance_F1610E4158C58370339627A9DDD83489" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfPropertyRepairsAndMaintenance_27302C77D01A5972449D27A9DDD870AE_terseLabel_en-US" xlink:label="lab_us-gaap_CostOfPropertyRepairsAndMaintenance_27302C77D01A5972449D27A9DDD870AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cost of Property Repairs and Maintenance</link:label>
    <link:label id="lab_us-gaap_CostOfPropertyRepairsAndMaintenance_27302C77D01A5972449D27A9DDD870AE_label_en-US" xlink:label="lab_us-gaap_CostOfPropertyRepairsAndMaintenance_27302C77D01A5972449D27A9DDD870AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Property Repairs and Maintenance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfPropertyRepairsAndMaintenance" xlink:label="loc_us-gaap_CostOfPropertyRepairsAndMaintenance_27302C77D01A5972449D27A9DDD870AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfPropertyRepairsAndMaintenance_27302C77D01A5972449D27A9DDD870AE" xlink:to="lab_us-gaap_CostOfPropertyRepairsAndMaintenance_27302C77D01A5972449D27A9DDD870AE" xlink:type="arc" />
    <link:label id="lab_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A_terseLabel_en-US" xlink:label="lab_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate Repair Cost Capitalized</link:label>
    <link:label id="lab_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A_label_en-US" xlink:label="lab_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Repair Cost Capitalized</link:label>
    <link:label id="lab_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A_documentation_en-US" xlink:label="lab_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate repair cost capitalized.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateRepairCostCapitalized" xlink:label="loc_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A" xlink:to="lab_land_RealEstateRepairCostCapitalized_CBEFA25E2B3383E2FB7C27A9DDD86D8A" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventsAbstract_FDF9B7F283DE96799F89220A45B7FD75_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsAbstract_FDF9B7F283DE96799F89220A45B7FD75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Events [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventsAbstract" xlink:label="loc_us-gaap_SubsequentEventsAbstract_FDF9B7F283DE96799F89220A45B7FD75" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsAbstract_FDF9B7F283DE96799F89220A45B7FD75" xlink:to="lab_us-gaap_SubsequentEventsAbstract_FDF9B7F283DE96799F89220A45B7FD75" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseArrangementTypeAxis_B425A934A4890969EA37220F36044AA5_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseArrangementTypeAxis_B425A934A4890969EA37220F36044AA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Arrangement, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LeaseArrangementTypeAxis_B425A934A4890969EA37220F36044AA5_label_en-US" xlink:label="lab_us-gaap_LeaseArrangementTypeAxis_B425A934A4890969EA37220F36044AA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Arrangement, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseArrangementTypeAxis" xlink:label="loc_us-gaap_LeaseArrangementTypeAxis_B425A934A4890969EA37220F36044AA5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseArrangementTypeAxis_B425A934A4890969EA37220F36044AA5" xlink:to="lab_us-gaap_LeaseArrangementTypeAxis_B425A934A4890969EA37220F36044AA5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseArrangementTypeDomain_9DE6A32375E89F5CF897220F36060CBE_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseArrangementTypeDomain_9DE6A32375E89F5CF897220F36060CBE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Arrangement, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LeaseArrangementTypeDomain_9DE6A32375E89F5CF897220F36060CBE_label_en-US" xlink:label="lab_us-gaap_LeaseArrangementTypeDomain_9DE6A32375E89F5CF897220F36060CBE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Arrangement, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseArrangementTypeDomain" xlink:label="loc_us-gaap_LeaseArrangementTypeDomain_9DE6A32375E89F5CF897220F36060CBE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseArrangementTypeDomain_9DE6A32375E89F5CF897220F36060CBE" xlink:to="lab_us-gaap_LeaseArrangementTypeDomain_9DE6A32375E89F5CF897220F36060CBE" xlink:type="arc" />
    <link:label id="lab_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0_terseLabel_en-US" xlink:label="lab_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prior Leases</link:label>
    <link:label id="lab_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0_label_en-US" xlink:label="lab_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prior Leases [Member]</link:label>
    <link:label id="lab_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0_documentation_en-US" xlink:label="lab_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Prior Leases [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PriorLeasesMember" xlink:label="loc_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0" xlink:to="lab_land_PriorLeasesMember_CFEFCFB19D416D24A9BC220F367660A0" xlink:type="arc" />
    <link:label id="lab_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3_terseLabel_en-US" xlink:label="lab_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">New Leases</link:label>
    <link:label id="lab_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3_label_en-US" xlink:label="lab_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Leases [Member]</link:label>
    <link:label id="lab_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3_documentation_en-US" xlink:label="lab_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">New Leases [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NewLeasesMember" xlink:label="loc_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3" xlink:to="lab_land_NewLeasesMember_6A7A070BD6DF3304F2F922103BAFE7C3" xlink:type="arc" />
    <link:label id="lab_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4_terseLabel_en-US" xlink:label="lab_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Arizona, California, Florida, Michigan and Nebraska</link:label>
    <link:label id="lab_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4_label_en-US" xlink:label="lab_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Arizona, California, Florida, Michigan and Nebraska [Member]</link:label>
    <link:label id="lab_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4_documentation_en-US" xlink:label="lab_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Arizona, California, Florida, Michigan and Nebraska [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ArizonaCaliforniaFloridaMichiganandNebraskaMember" xlink:label="loc_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4" xlink:to="lab_land_ArizonaCaliforniaFloridaMichiganandNebraskaMember_E0DD8BB11929E400897A220E63AFFDE4" xlink:type="arc" />
    <link:label id="lab_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F_terseLabel_en-US" xlink:label="lab_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of leases</link:label>
    <link:label id="lab_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F_label_en-US" xlink:label="lab_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Leases</link:label>
    <link:label id="lab_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F_documentation_en-US" xlink:label="lab_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of leases.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfLeases" xlink:label="loc_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F" xlink:to="lab_land_NumberOfLeases_7CBFB61E113947F915C7220D4A9BD47F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AreaOfRealEstateProperty_3C0744A76C1D3202A500220D4DBF100A_verboseLabel_en-US" xlink:label="lab_us-gaap_AreaOfRealEstateProperty_3C0744A76C1D3202A500220D4DBF100A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total Acres</link:label>
    <link:label id="lab_us-gaap_AreaOfRealEstateProperty_3C0744A76C1D3202A500220D4DBF100A_label_en-US" xlink:label="lab_us-gaap_AreaOfRealEstateProperty_3C0744A76C1D3202A500220D4DBF100A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Area of Real Estate Property</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AreaOfRealEstateProperty" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_3C0744A76C1D3202A500220D4DBF100A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AreaOfRealEstateProperty_3C0744A76C1D3202A500220D4DBF100A" xlink:to="lab_us-gaap_AreaOfRealEstateProperty_3C0744A76C1D3202A500220D4DBF100A" xlink:type="arc" />
    <link:label id="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065_verboseLabel_en-US" xlink:label="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total Annualized Straight-line Rent</link:label>
    <link:label id="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065_label_en-US" xlink:label="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Annualized Straight Line Rent</link:label>
    <link:label id="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065_documentation_en-US" xlink:label="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Annualized Straight Line Rent</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LessorOperatingLeaseAnnualizedStraightLineRent" xlink:label="loc_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065" xlink:to="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_A64B44E9D550526565E4220F34627065" xlink:type="arc" />
    <link:label id="lab_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030_terseLabel_en-US" xlink:label="lab_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Leases with Participation Rents</link:label>
    <link:label id="lab_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030_label_en-US" xlink:label="lab_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Leases With Participation Rents</link:label>
    <link:label id="lab_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030_documentation_en-US" xlink:label="lab_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Leases With Participation Rents</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfLeasesWithParticipationRents" xlink:label="loc_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030" xlink:to="lab_land_NumberOfLeasesWithParticipationRents_B12C2FEA17D7DAA7D75F220F380BD030" xlink:type="arc" />
    <link:label id="lab_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6_terseLabel_en-US" xlink:label="lab_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Structures, Number of NNN Leases</link:label>
    <link:label id="lab_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6_label_en-US" xlink:label="lab_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Leases, Triple Net</link:label>
    <link:label id="lab_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6_documentation_en-US" xlink:label="lab_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Leases, Triple Net</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfLeasesTripleNet" xlink:label="loc_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6" xlink:to="lab_land_NumberOfLeasesTripleNet_58264582735A542835802213BE663BA6" xlink:type="arc" />
    <link:label id="lab_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A_terseLabel_en-US" xlink:label="lab_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Structures, Number of NN Leases</link:label>
    <link:label id="lab_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A_label_en-US" xlink:label="lab_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Leases, Double Net</link:label>
    <link:label id="lab_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A_documentation_en-US" xlink:label="lab_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number Of Leases, Double Net</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfLeasesDoubleNet" xlink:label="loc_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A" xlink:to="lab_land_NumberOfLeasesDoubleNet_30826A2AB527FBC46EAE2213C1B6865A" xlink:type="arc" />
    <link:label id="lab_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42_terseLabel_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Term</link:label>
    <link:label id="lab_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42_label_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee Leasing Arrangement Lease Term</link:label>
    <link:label id="lab_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42_documentation_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee leasing arrangement lease term.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LesseeLeasingArrangementLeaseTerm" xlink:label="loc_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42" xlink:to="lab_land_LesseeLeasingArrangementLeaseTerm_814B67E8DE0BE0D3F2D822103D70AC42" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_8BD24CECFC599AE1214C1FBE4279CEA0_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_8BD24CECFC599AE1214C1FBE4279CEA0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureAbstract" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_8BD24CECFC599AE1214C1FBE4279CEA0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_8BD24CECFC599AE1214C1FBE4279CEA0" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureAbstract_8BD24CECFC599AE1214C1FBE4279CEA0" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesTable_18A0668A622CD1675F0C1FBE4279F4E9_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_18A0668A622CD1675F0C1FBE4279F4E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesTable_18A0668A622CD1675F0C1FBE4279F4E9_label_en-US" xlink:label="lab_us-gaap_LossContingenciesTable_18A0668A622CD1675F0C1FBE4279F4E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesTable" xlink:label="loc_us-gaap_LossContingenciesTable_18A0668A622CD1675F0C1FBE4279F4E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesTable_18A0668A622CD1675F0C1FBE4279F4E9" xlink:to="lab_us-gaap_LossContingenciesTable_18A0668A622CD1675F0C1FBE4279F4E9" xlink:type="arc" />
    <link:label id="lab_stpr_OR_4A007AD1720869C2038E1FBE427FB86B_terseLabel_en-US" xlink:label="lab_stpr_OR_4A007AD1720869C2038E1FBE427FB86B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Oregon</link:label>
    <link:label id="lab_stpr_OR_4A007AD1720869C2038E1FBE427FB86B_label_en-US" xlink:label="lab_stpr_OR_4A007AD1720869C2038E1FBE427FB86B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">OREGON</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_OR" xlink:label="loc_stpr_OR_4A007AD1720869C2038E1FBE427FB86B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_OR_4A007AD1720869C2038E1FBE427FB86B" xlink:to="lab_stpr_OR_4A007AD1720869C2038E1FBE427FB86B" xlink:type="arc" />
    <link:label id="lab_stpr_NC_FDA5FB14D2964167376E1FBE428097ED_terseLabel_en-US" xlink:label="lab_stpr_NC_FDA5FB14D2964167376E1FBE428097ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">North Carolina</link:label>
    <link:label id="lab_stpr_NC_FDA5FB14D2964167376E1FBE428097ED_label_en-US" xlink:label="lab_stpr_NC_FDA5FB14D2964167376E1FBE428097ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NORTH CAROLINA</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NC" xlink:label="loc_stpr_NC_FDA5FB14D2964167376E1FBE428097ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_NC_FDA5FB14D2964167376E1FBE428097ED" xlink:to="lab_stpr_NC_FDA5FB14D2964167376E1FBE428097ED" xlink:type="arc" />
    <link:label id="lab_stpr_FL_368572DBEC50C4F855541FBE4280A5A7_terseLabel_en-US" xlink:label="lab_stpr_FL_368572DBEC50C4F855541FBE4280A5A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Florida</link:label>
    <link:label id="lab_stpr_FL_368572DBEC50C4F855541FBE4280A5A7_label_en-US" xlink:label="lab_stpr_FL_368572DBEC50C4F855541FBE4280A5A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">FLORIDA</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_FL" xlink:label="loc_stpr_FL_368572DBEC50C4F855541FBE4280A5A7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_FL_368572DBEC50C4F855541FBE4280A5A7" xlink:to="lab_stpr_FL_368572DBEC50C4F855541FBE4280A5A7" xlink:type="arc" />
    <link:label id="lab_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8_terseLabel_en-US" xlink:label="lab_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collier &amp; Hendry, FL</link:label>
    <link:label id="lab_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8_label_en-US" xlink:label="lab_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collier And Hendry County Florida [Member]</link:label>
    <link:label id="lab_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8_documentation_en-US" xlink:label="lab_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Collier And Hendry County Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CollierAndHendryCountyFloridaMember" xlink:label="loc_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8" xlink:to="lab_land_CollierAndHendryCountyFloridaMember_8CA5DCEF37438855BCA71FBE42803BE8" xlink:type="arc" />
    <link:label id="lab_stpr_CA_AEBCA09D9EB530E3E75D1FBE4281F758_terseLabel_en-US" xlink:label="lab_stpr_CA_AEBCA09D9EB530E3E75D1FBE4281F758" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">California</link:label>
    <link:label id="lab_stpr_CA_AEBCA09D9EB530E3E75D1FBE4281F758_label_en-US" xlink:label="lab_stpr_CA_AEBCA09D9EB530E3E75D1FBE4281F758" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">CALIFORNIA</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_CA" xlink:label="loc_stpr_CA_AEBCA09D9EB530E3E75D1FBE4281F758" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_CA_AEBCA09D9EB530E3E75D1FBE4281F758" xlink:to="lab_stpr_CA_AEBCA09D9EB530E3E75D1FBE4281F758" xlink:type="arc" />
    <link:label id="lab_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331_terseLabel_en-US" xlink:label="lab_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Santa Barbara, CA</link:label>
    <link:label id="lab_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331_label_en-US" xlink:label="lab_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Santa Barbara County California [Member]</link:label>
    <link:label id="lab_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331_documentation_en-US" xlink:label="lab_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Santa Barbara County California [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SantaBarbaraCountyCaliforniaMember" xlink:label="loc_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331" xlink:to="lab_land_SantaBarbaraCountyCaliforniaMember_2DDCA590EBC1E9E6176A1FBE4281F331" xlink:type="arc" />
    <link:label id="lab_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_230665EBF8643620F8EA1FBE428174A7_terseLabel_en-US" xlink:label="lab_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_230665EBF8643620F8EA1FBE428174A7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate, Type of Property [Axis]</link:label>
    <link:label id="lab_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_230665EBF8643620F8EA1FBE428174A7_label_en-US" xlink:label="lab_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_230665EBF8643620F8EA1FBE428174A7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate, Type of Property [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis" xlink:label="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_230665EBF8643620F8EA1FBE428174A7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_230665EBF8643620F8EA1FBE428174A7" xlink:to="lab_srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_230665EBF8643620F8EA1FBE428174A7" xlink:type="arc" />
    <link:label id="lab_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_966764CB14CD5B226E6A1FBE4282C41D_terseLabel_en-US" xlink:label="lab_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_966764CB14CD5B226E6A1FBE4282C41D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate [Domain]</link:label>
    <link:label id="lab_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_966764CB14CD5B226E6A1FBE4282C41D_label_en-US" xlink:label="lab_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_966764CB14CD5B226E6A1FBE4282C41D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MortgageLoansOnRealEstateNamePropertyTypeDomain" xlink:label="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_966764CB14CD5B226E6A1FBE4282C41D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_966764CB14CD5B226E6A1FBE4282C41D" xlink:to="lab_srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_966764CB14CD5B226E6A1FBE4282C41D" xlink:type="arc" />
    <link:label id="lab_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61_terseLabel_en-US" xlink:label="lab_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017 New Real Estate Activity</link:label>
    <link:label id="lab_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61_label_en-US" xlink:label="lab_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Seventeen New Real Estate Activity [Member]</link:label>
    <link:label id="lab_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61_documentation_en-US" xlink:label="lab_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Seventeen New Real Estate Activity [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TwoThousandSeventeenNewRealEstateActivityMember" xlink:label="loc_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61" xlink:to="lab_land_TwoThousandSeventeenNewRealEstateActivityMember_360C4250B1695EA0BB1A1FBE42824A61" xlink:type="arc" />
    <link:label id="lab_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65_terseLabel_en-US" xlink:label="lab_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2018 New Real Estate Activity</link:label>
    <link:label id="lab_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65_label_en-US" xlink:label="lab_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Eighteen New Real Estate Activity [Member]</link:label>
    <link:label id="lab_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65_documentation_en-US" xlink:label="lab_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Two Thousand Eighteen New Real Estate Activity [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TwoThousandEighteenNewRealEstateActivityMember" xlink:label="loc_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65" xlink:to="lab_land_TwoThousandEighteenNewRealEstateActivityMember_34A9F7422E344F52A3681FBE4283CA65" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementScenarioAxis_56636F3B970F21D4E9201FBE4283E5C8_terseLabel_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_56636F3B970F21D4E9201FBE4283E5C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementScenarioAxis_56636F3B970F21D4E9201FBE4283E5C8_label_en-US" xlink:label="lab_us-gaap_StatementScenarioAxis_56636F3B970F21D4E9201FBE4283E5C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementScenarioAxis" xlink:label="loc_us-gaap_StatementScenarioAxis_56636F3B970F21D4E9201FBE4283E5C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementScenarioAxis_56636F3B970F21D4E9201FBE4283E5C8" xlink:to="lab_us-gaap_StatementScenarioAxis_56636F3B970F21D4E9201FBE4283E5C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_D8DC6309C43BD00F26801FBE42830837_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_D8DC6309C43BD00F26801FBE42830837" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:label id="lab_us-gaap_ScenarioUnspecifiedDomain_D8DC6309C43BD00F26801FBE42830837_label_en-US" xlink:label="lab_us-gaap_ScenarioUnspecifiedDomain_D8DC6309C43BD00F26801FBE42830837" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario, Unspecified [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScenarioUnspecifiedDomain" xlink:label="loc_us-gaap_ScenarioUnspecifiedDomain_D8DC6309C43BD00F26801FBE42830837" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioUnspecifiedDomain_D8DC6309C43BD00F26801FBE42830837" xlink:to="lab_us-gaap_ScenarioUnspecifiedDomain_D8DC6309C43BD00F26801FBE42830837" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScenarioForecastMember_24C03E43CB2E402261D51FBE42834753_terseLabel_en-US" xlink:label="lab_us-gaap_ScenarioForecastMember_24C03E43CB2E402261D51FBE42834753" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Forecast</link:label>
    <link:label id="lab_us-gaap_ScenarioForecastMember_24C03E43CB2E402261D51FBE42834753_label_en-US" xlink:label="lab_us-gaap_ScenarioForecastMember_24C03E43CB2E402261D51FBE42834753" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Scenario, Forecast [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScenarioForecastMember" xlink:label="loc_us-gaap_ScenarioForecastMember_24C03E43CB2E402261D51FBE42834753" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScenarioForecastMember_24C03E43CB2E402261D51FBE42834753" xlink:to="lab_us-gaap_ScenarioForecastMember_24C03E43CB2E402261D51FBE42834753" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstatePropertiesAxis_B76FE161B131B8BCE0991FBE4284359C_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstatePropertiesAxis_B76FE161B131B8BCE0991FBE4284359C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate Property Ownership [Axis]</link:label>
    <link:label id="lab_us-gaap_RealEstatePropertiesAxis_B76FE161B131B8BCE0991FBE4284359C_label_en-US" xlink:label="lab_us-gaap_RealEstatePropertiesAxis_B76FE161B131B8BCE0991FBE4284359C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Property Ownership [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstatePropertiesAxis" xlink:label="loc_us-gaap_RealEstatePropertiesAxis_B76FE161B131B8BCE0991FBE4284359C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstatePropertiesAxis_B76FE161B131B8BCE0991FBE4284359C" xlink:to="lab_us-gaap_RealEstatePropertiesAxis_B76FE161B131B8BCE0991FBE4284359C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstatePropertiesDomain_212E578B1D77E17EDAC21FBE42844210_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstatePropertiesDomain_212E578B1D77E17EDAC21FBE42844210" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate Properties [Domain]</link:label>
    <link:label id="lab_us-gaap_RealEstatePropertiesDomain_212E578B1D77E17EDAC21FBE42844210_label_en-US" xlink:label="lab_us-gaap_RealEstatePropertiesDomain_212E578B1D77E17EDAC21FBE42844210" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Properties [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstatePropertiesDomain" xlink:label="loc_us-gaap_RealEstatePropertiesDomain_212E578B1D77E17EDAC21FBE42844210" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstatePropertiesDomain_212E578B1D77E17EDAC21FBE42844210" xlink:to="lab_us-gaap_RealEstatePropertiesDomain_212E578B1D77E17EDAC21FBE42844210" xlink:type="arc" />
    <link:label id="lab_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0_terseLabel_en-US" xlink:label="lab_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cat Canyon Road</link:label>
    <link:label id="lab_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0_label_en-US" xlink:label="lab_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cat Canyon Road [Member]</link:label>
    <link:label id="lab_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0_documentation_en-US" xlink:label="lab_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cat Canyon Road [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CatCanyonRoadMember" xlink:label="loc_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0" xlink:to="lab_land_CatCanyonRoadMember_532FEE48DE4C9DEC19931FBE428480D0" xlink:type="arc" />
    <link:label id="lab_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB_terseLabel_en-US" xlink:label="lab_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Owl Hammock</link:label>
    <link:label id="lab_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB_label_en-US" xlink:label="lab_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Owl Hammock [Member]</link:label>
    <link:label id="lab_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB_documentation_en-US" xlink:label="lab_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Owl Hammock [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OwlHammockMember" xlink:label="loc_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB" xlink:to="lab_land_OwlHammockMember_9A80557D2469CD709FE11FBE4285BAEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LossContingenciesLineItems_610E3497AE5F2408BB031FBE42851F3D_terseLabel_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_610E3497AE5F2408BB031FBE42851F3D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:label id="lab_us-gaap_LossContingenciesLineItems_610E3497AE5F2408BB031FBE42851F3D_label_en-US" xlink:label="lab_us-gaap_LossContingenciesLineItems_610E3497AE5F2408BB031FBE42851F3D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss Contingencies [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LossContingenciesLineItems" xlink:label="loc_us-gaap_LossContingenciesLineItems_610E3497AE5F2408BB031FBE42851F3D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LossContingenciesLineItems_610E3497AE5F2408BB031FBE42851F3D" xlink:to="lab_us-gaap_LossContingenciesLineItems_610E3497AE5F2408BB031FBE42851F3D" xlink:type="arc" />
    <link:label id="lab_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396_terseLabel_en-US" xlink:label="lab_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of farms in lease amendment</link:label>
    <link:label id="lab_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396_label_en-US" xlink:label="lab_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Farms in Lease Amendment</link:label>
    <link:label id="lab_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396_documentation_en-US" xlink:label="lab_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Farms in Lease Amendment</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberofFarmsinLeaseAmendment" xlink:label="loc_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396" xlink:to="lab_land_NumberofFarmsinLeaseAmendment_8C4B908FC60CA3D8A1531FBE42855396" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToDevelopRealEstateAssets_D818A7CCADF5602E82EE1FBE4285DD69_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToDevelopRealEstateAssets_D818A7CCADF5602E82EE1FBE4285DD69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated cost</link:label>
    <link:label id="lab_us-gaap_PaymentsToDevelopRealEstateAssets_D818A7CCADF5602E82EE1FBE4285DD69_label_en-US" xlink:label="lab_us-gaap_PaymentsToDevelopRealEstateAssets_D818A7CCADF5602E82EE1FBE4285DD69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Develop Real Estate Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToDevelopRealEstateAssets" xlink:label="loc_us-gaap_PaymentsToDevelopRealEstateAssets_D818A7CCADF5602E82EE1FBE4285DD69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToDevelopRealEstateAssets_D818A7CCADF5602E82EE1FBE4285DD69" xlink:to="lab_us-gaap_PaymentsToDevelopRealEstateAssets_D818A7CCADF5602E82EE1FBE4285DD69" xlink:type="arc" />
    <link:label id="lab_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC_terseLabel_en-US" xlink:label="lab_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Annual rent escalation (as percent)</link:label>
    <link:label id="lab_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC_label_en-US" xlink:label="lab_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Annual Rental Escalations</link:label>
    <link:label id="lab_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC_documentation_en-US" xlink:label="lab_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessor, Annual Rental Escalations</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LessorAnnualRentalEscalations" xlink:label="loc_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC" xlink:to="lab_land_LessorAnnualRentalEscalations_3C7ADD3EFDF15BF816201FBE428ABCAC" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_11BF1D43D811C7042FC71FBE428BBF67_terseLabel_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_11BF1D43D811C7042FC71FBE428BBF67" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accrued liabilities related to lease</link:label>
    <link:label id="lab_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_11BF1D43D811C7042FC71FBE428BBF67_label_en-US" xlink:label="lab_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_11BF1D43D811C7042FC71FBE428BBF67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accrued Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccruedLiabilitiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_11BF1D43D811C7042FC71FBE428BBF67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_11BF1D43D811C7042FC71FBE428BBF67" xlink:to="lab_us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_11BF1D43D811C7042FC71FBE428BBF67" xlink:type="arc" />
    <link:label id="lab_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B_terseLabel_en-US" xlink:label="lab_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of farms acquired</link:label>
    <link:label id="lab_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B_label_en-US" xlink:label="lab_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Farms Acquired</link:label>
    <link:label id="lab_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B_documentation_en-US" xlink:label="lab_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of farms acquired.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfFarmsAcquired" xlink:label="loc_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B" xlink:to="lab_land_NumberOfFarmsAcquired_E43EDD4327543EDB04FF1FBE428B8F0B" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForCapitalImprovements_A5DCB8D4342C4FBC3A561FBE428B0270_verboseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForCapitalImprovements_A5DCB8D4342C4FBC3A561FBE428B0270" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Expended or accrued for capital improvements</link:label>
    <link:label id="lab_us-gaap_PaymentsForCapitalImprovements_A5DCB8D4342C4FBC3A561FBE428B0270_label_en-US" xlink:label="lab_us-gaap_PaymentsForCapitalImprovements_A5DCB8D4342C4FBC3A561FBE428B0270" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Capital Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForCapitalImprovements" xlink:label="loc_us-gaap_PaymentsForCapitalImprovements_A5DCB8D4342C4FBC3A561FBE428B0270" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForCapitalImprovements_A5DCB8D4342C4FBC3A561FBE428B0270" xlink:to="lab_us-gaap_PaymentsForCapitalImprovements_A5DCB8D4342C4FBC3A561FBE428B0270" xlink:type="arc" />
    <link:label id="lab_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_A9104C6A8C00A4685E8D22004A2F5952_label_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_A9104C6A8C00A4685E8D22004A2F5952" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Quarterly Financial Information Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationDisclosureAbstract" xlink:label="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_A9104C6A8C00A4685E8D22004A2F5952" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_A9104C6A8C00A4685E8D22004A2F5952" xlink:to="lab_us-gaap_QuarterlyFinancialInformationDisclosureAbstract_A9104C6A8C00A4685E8D22004A2F5952" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_8755693C562A85E2C52C22004A335915_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_8755693C562A85E2C52C22004A335915" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Quarterly Financial Information</link:label>
    <link:label id="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_8755693C562A85E2C52C22004A335915_label_en-US" xlink:label="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_8755693C562A85E2C52C22004A335915" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Quarterly Financial Information [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_8755693C562A85E2C52C22004A335915" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_8755693C562A85E2C52C22004A335915" xlink:to="lab_us-gaap_ScheduleOfQuarterlyFinancialInformationTableTextBlock_8755693C562A85E2C52C22004A335915" xlink:type="arc" />
    <link:label id="lab_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F_terseLabel_en-US" xlink:label="lab_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Morrow County, OR</link:label>
    <link:label id="lab_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F_label_en-US" xlink:label="lab_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Morrow County Oregon [Member]</link:label>
    <link:label id="lab_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F_documentation_en-US" xlink:label="lab_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Morrow county Oregon.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MorrowCountyOregonMember" xlink:label="loc_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F" xlink:to="lab_land_MorrowCountyOregonMember_A6B550C89E6B01064F262058B1DA3F6F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleOfRealEstate_BDE9DDF7707E65787245205892B97C9D_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfRealEstate_BDE9DDF7707E65787245205892B97C9D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from dispositions of real estate assets</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfRealEstate_BDE9DDF7707E65787245205892B97C9D_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfRealEstate_BDE9DDF7707E65787245205892B97C9D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Real Estate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromSaleOfRealEstate" xlink:label="loc_us-gaap_ProceedsFromSaleOfRealEstate_BDE9DDF7707E65787245205892B97C9D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfRealEstate_BDE9DDF7707E65787245205892B97C9D" xlink:to="lab_us-gaap_ProceedsFromSaleOfRealEstate_BDE9DDF7707E65787245205892B97C9D" xlink:type="arc" />
    <link:label id="lab_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D_terseLabel_en-US" xlink:label="lab_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Closing costs and write-off of deferred rent</link:label>
    <link:label id="lab_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D_label_en-US" xlink:label="lab_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Real Estate Assets, Closing Costs and Write-off Of Deferred Rent</link:label>
    <link:label id="lab_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D_documentation_en-US" xlink:label="lab_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sale of Real Estate Assets, Closing Costs and Write-off Of Deferred Rent</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent" xlink:label="loc_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D" xlink:to="lab_land_SaleofRealEstateAssetsClosingCostsandWriteoffOfDeferredRent_285715E7F11736775890205897CD679D" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnSaleOfProperties_08766D3A377FC8FD0C812058992FE498_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfProperties_08766D3A377FC8FD0C812058992FE498" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on sale of properties</link:label>
    <link:label id="lab_us-gaap_GainLossOnSaleOfProperties_08766D3A377FC8FD0C812058992FE498_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfProperties_08766D3A377FC8FD0C812058992FE498" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Sale of Properties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnSaleOfProperties" xlink:label="loc_us-gaap_GainLossOnSaleOfProperties_08766D3A377FC8FD0C812058992FE498" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfProperties_08766D3A377FC8FD0C812058992FE498" xlink:to="lab_us-gaap_GainLossOnSaleOfProperties_08766D3A377FC8FD0C812058992FE498" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureAbstract_2C4A81BB511D311F545A2200E390864E_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureAbstract_2C4A81BB511D311F545A2200E390864E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureAbstract" xlink:label="loc_us-gaap_DebtDisclosureAbstract_2C4A81BB511D311F545A2200E390864E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureAbstract_2C4A81BB511D311F545A2200E390864E" xlink:to="lab_us-gaap_DebtDisclosureAbstract_2C4A81BB511D311F545A2200E390864E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentTable_57DC2A73B8F746E97D5A2200E390BFCB_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_57DC2A73B8F746E97D5A2200E390BFCB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentTable_57DC2A73B8F746E97D5A2200E390BFCB_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTable_57DC2A73B8F746E97D5A2200E390BFCB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTable" xlink:label="loc_us-gaap_DebtInstrumentTable_57DC2A73B8F746E97D5A2200E390BFCB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTable_57DC2A73B8F746E97D5A2200E390BFCB" xlink:to="lab_us-gaap_DebtInstrumentTable_57DC2A73B8F746E97D5A2200E390BFCB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentAxis_FD5756E837E780D363A92200E3910D18_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_FD5756E837E780D363A92200E3910D18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentAxis_FD5756E837E780D363A92200E3910D18_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentAxis_FD5756E837E780D363A92200E3910D18" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentAxis" xlink:label="loc_us-gaap_DebtInstrumentAxis_FD5756E837E780D363A92200E3910D18" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentAxis_FD5756E837E780D363A92200E3910D18" xlink:to="lab_us-gaap_DebtInstrumentAxis_FD5756E837E780D363A92200E3910D18" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_3F0CF596A8DAFC23B1692200E391DC4A_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_3F0CF596A8DAFC23B1692200E391DC4A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentNameDomain_3F0CF596A8DAFC23B1692200E391DC4A_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentNameDomain_3F0CF596A8DAFC23B1692200E391DC4A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentNameDomain" xlink:label="loc_us-gaap_DebtInstrumentNameDomain_3F0CF596A8DAFC23B1692200E391DC4A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentNameDomain_3F0CF596A8DAFC23B1692200E391DC4A" xlink:to="lab_us-gaap_DebtInstrumentNameDomain_3F0CF596A8DAFC23B1692200E391DC4A" xlink:type="arc" />
    <link:label id="lab_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815_terseLabel_en-US" xlink:label="lab_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rabo AgriFinance, LLC</link:label>
    <link:label id="lab_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815_label_en-US" xlink:label="lab_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rabo AgriFinance, LLC [Member]</link:label>
    <link:label id="lab_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815_documentation_en-US" xlink:label="lab_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Rabo AgriFinance, LLC [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RaboAgriFinanceLLCMember" xlink:label="loc_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815" xlink:to="lab_land_RaboAgriFinanceLLCMember_72A7875520C666BCB1D42200E3915815" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_C789C844FA58219B86172200E392F147_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_C789C844FA58219B86172200E392F147" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentLineItems_C789C844FA58219B86172200E392F147_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentLineItems_C789C844FA58219B86172200E392F147" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentLineItems" xlink:label="loc_us-gaap_DebtInstrumentLineItems_C789C844FA58219B86172200E392F147" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentLineItems_C789C844FA58219B86172200E392F147" xlink:to="lab_us-gaap_DebtInstrumentLineItems_C789C844FA58219B86172200E392F147" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_BDD3D67017120F4145C52200E3922EF5_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_BDD3D67017120F4145C52200E3922EF5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument, face amount</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_BDD3D67017120F4145C52200E3922EF5_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_BDD3D67017120F4145C52200E3922EF5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Face Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_BDD3D67017120F4145C52200E3922EF5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_BDD3D67017120F4145C52200E3922EF5" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_BDD3D67017120F4145C52200E3922EF5" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentTerm_2AA1037F696CC0E6E2C42200E392D022_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_2AA1037F696CC0E6E2C42200E392D022" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term of debt</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentTerm_2AA1037F696CC0E6E2C42200E392D022_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentTerm_2AA1037F696CC0E6E2C42200E392D022" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Term</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentTerm" xlink:label="loc_us-gaap_DebtInstrumentTerm_2AA1037F696CC0E6E2C42200E392D022" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentTerm_2AA1037F696CC0E6E2C42200E392D022" xlink:to="lab_us-gaap_DebtInstrumentTerm_2AA1037F696CC0E6E2C42200E392D022" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_3154BD7E0A2011F5171D2200E39211F8_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_3154BD7E0A2011F5171D2200E39211F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate (as percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_3154BD7E0A2011F5171D2200E39211F8_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_3154BD7E0A2011F5171D2200E39211F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Stated Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateStatedPercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3154BD7E0A2011F5171D2200E39211F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateStatedPercentage_3154BD7E0A2011F5171D2200E39211F8" xlink:to="lab_us-gaap_DebtInstrumentInterestRateStatedPercentage_3154BD7E0A2011F5171D2200E39211F8" xlink:type="arc" />
    <link:label id="lab_stpr_CO_547143973C351225893C2750A4D64084_terseLabel_en-US" xlink:label="lab_stpr_CO_547143973C351225893C2750A4D64084" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Colorado</link:label>
    <link:label id="lab_stpr_CO_547143973C351225893C2750A4D64084_label_en-US" xlink:label="lab_stpr_CO_547143973C351225893C2750A4D64084" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">COLORADO</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_CO" xlink:label="loc_stpr_CO_547143973C351225893C2750A4D64084" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_CO_547143973C351225893C2750A4D64084" xlink:to="lab_stpr_CO_547143973C351225893C2750A4D64084" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityAxis_417212A68AD094C5E6F32750A4D66C88_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityAxis_417212A68AD094C5E6F32750A4D66C88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lender Name [Axis]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityAxis_417212A68AD094C5E6F32750A4D66C88_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityAxis_417212A68AD094C5E6F32750A4D66C88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lender Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityAxis" xlink:label="loc_us-gaap_LineOfCreditFacilityAxis_417212A68AD094C5E6F32750A4D66C88" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityAxis_417212A68AD094C5E6F32750A4D66C88" xlink:to="lab_us-gaap_LineOfCreditFacilityAxis_417212A68AD094C5E6F32750A4D66C88" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityLenderDomain_7D2B2973C8DFED91E9972750A4D6F438_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLenderDomain_7D2B2973C8DFED91E9972750A4D6F438" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Lender [Domain]</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityLenderDomain_7D2B2973C8DFED91E9972750A4D6F438_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityLenderDomain_7D2B2973C8DFED91E9972750A4D6F438" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Lender [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityLenderDomain" xlink:label="loc_us-gaap_LineOfCreditFacilityLenderDomain_7D2B2973C8DFED91E9972750A4D6F438" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityLenderDomain_7D2B2973C8DFED91E9972750A4D6F438" xlink:to="lab_us-gaap_LineOfCreditFacilityLenderDomain_7D2B2973C8DFED91E9972750A4D6F438" xlink:type="arc" />
    <link:label id="lab_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D_terseLabel_en-US" xlink:label="lab_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Diversified Financial Services, LLC</link:label>
    <link:label id="lab_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D_label_en-US" xlink:label="lab_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Diversified Financial Services, LLC [Member]</link:label>
    <link:label id="lab_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D_documentation_en-US" xlink:label="lab_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Diversified Financial Services, LLC [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DiversifiedFinancialServicesLLCMember" xlink:label="loc_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D" xlink:to="lab_land_DiversifiedFinancialServicesLLCMember_8EC1E52AC4CA329F70BA2750A4D7244D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForCapitalImprovements_9FF30501BC6E4E0D07702750A4D89B1D_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForCapitalImprovements_9FF30501BC6E4E0D07702750A4D89B1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments for capital improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForCapitalImprovements" xlink:label="loc_us-gaap_PaymentsForCapitalImprovements_9FF30501BC6E4E0D07702750A4D89B1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForCapitalImprovements_9FF30501BC6E4E0D07702750A4D89B1D" xlink:to="lab_us-gaap_PaymentsForCapitalImprovements_9FF30501BC6E4E0D07702750A4D89B1D" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfMediumTermNotes_B58A03AD02EF52D22CC02750A4D7E533_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfMediumTermNotes_B58A03AD02EF52D22CC02750A4D7E533" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from note payable</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfMediumTermNotes_B58A03AD02EF52D22CC02750A4D7E533_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfMediumTermNotes_B58A03AD02EF52D22CC02750A4D7E533" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Medium-term Notes</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfMediumTermNotes" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfMediumTermNotes_B58A03AD02EF52D22CC02750A4D7E533" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfMediumTermNotes_B58A03AD02EF52D22CC02750A4D7E533" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfMediumTermNotes_B58A03AD02EF52D22CC02750A4D7E533" xlink:type="arc" />
    <link:label id="lab_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED_terseLabel_en-US" xlink:label="lab_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Expiration Date [Axis]</link:label>
    <link:label id="lab_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED_label_en-US" xlink:label="lab_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Expiration Date [Axis]</link:label>
    <link:label id="lab_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED_documentation_en-US" xlink:label="lab_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Expiration Date [Axis]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeaseExpirationDateAxis" xlink:label="loc_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED" xlink:to="lab_land_LeaseExpirationDateAxis_642A2BE70431041D5B61280791E718ED" xlink:type="arc" />
    <link:label id="lab_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E_terseLabel_en-US" xlink:label="lab_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Expiration Date [Domain]</link:label>
    <link:label id="lab_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E_label_en-US" xlink:label="lab_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Expiration Date [Domain]</link:label>
    <link:label id="lab_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E_documentation_en-US" xlink:label="lab_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Domain] for Lease Expiration Date [Axis]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeaseExpirationDateDomain" xlink:label="loc_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E" xlink:to="lab_land_LeaseExpirationDateDomain_04231274C00761F25D92280791E7738E" xlink:type="arc" />
    <link:label id="lab_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C_terseLabel_en-US" xlink:label="lab_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">February 2022</link:label>
    <link:label id="lab_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C_label_en-US" xlink:label="lab_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">February 2022 [Member]</link:label>
    <link:label id="lab_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C_documentation_en-US" xlink:label="lab_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">February 2022 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_February2022Member" xlink:label="loc_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C" xlink:to="lab_land_February2022Member_8DE8B64CE4CD5986D5DB280791E74F6C" xlink:type="arc" />
    <link:label id="lab_land_February2025Member_BD0B944D65D030240208280791E78B26_terseLabel_en-US" xlink:label="lab_land_February2025Member_BD0B944D65D030240208280791E78B26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">February 2025</link:label>
    <link:label id="lab_land_February2025Member_BD0B944D65D030240208280791E78B26_label_en-US" xlink:label="lab_land_February2025Member_BD0B944D65D030240208280791E78B26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">February 2025 [Member]</link:label>
    <link:label id="lab_land_February2025Member_BD0B944D65D030240208280791E78B26_documentation_en-US" xlink:label="lab_land_February2025Member_BD0B944D65D030240208280791E78B26" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">February 2025 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_February2025Member" xlink:label="loc_land_February2025Member_BD0B944D65D030240208280791E78B26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_February2025Member_BD0B944D65D030240208280791E78B26" xlink:to="lab_land_February2025Member_BD0B944D65D030240208280791E78B26" xlink:type="arc" />
    <link:label id="lab_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9_terseLabel_en-US" xlink:label="lab_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">June 2019</link:label>
    <link:label id="lab_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9_label_en-US" xlink:label="lab_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">June 2019 [Member]</link:label>
    <link:label id="lab_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9_documentation_en-US" xlink:label="lab_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">June 2019 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_June2019Member" xlink:label="loc_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9" xlink:to="lab_land_June2019Member_29D68B1A6A2D8EE3DA9B2820CBB23FF9" xlink:type="arc" />
    <link:label id="lab_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC_terseLabel_en-US" xlink:label="lab_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">September 2026</link:label>
    <link:label id="lab_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC_label_en-US" xlink:label="lab_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">September 2026 [Member]</link:label>
    <link:label id="lab_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC_documentation_en-US" xlink:label="lab_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">September 2026 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_September2026Member" xlink:label="loc_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC" xlink:to="lab_land_September2026Member_4A7ED31B3539D2D9BBF52820CC40ABFC" xlink:type="arc" />
    <link:label id="lab_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04_terseLabel_en-US" xlink:label="lab_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Citrus Boulevard</link:label>
    <link:label id="lab_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04_label_en-US" xlink:label="lab_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Citrus Boulevard [Member]</link:label>
    <link:label id="lab_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04_documentation_en-US" xlink:label="lab_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Citrus Boulevard [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CitrusBoulevardMember" xlink:label="loc_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04" xlink:to="lab_land_CitrusBoulevardMember_D5F1A361F8E2CB8EE11C280791E71E04" xlink:type="arc" />
    <link:label id="lab_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35_terseLabel_en-US" xlink:label="lab_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Spot Road</link:label>
    <link:label id="lab_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35_label_en-US" xlink:label="lab_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Spot Road [Member]</link:label>
    <link:label id="lab_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35_documentation_en-US" xlink:label="lab_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Spot Road [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SpotRoadMember" xlink:label="loc_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35" xlink:to="lab_land_SpotRoadMember_DEDDC9FADF4BDCD4737F280791E72A35" xlink:type="arc" />
    <link:label id="lab_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2_terseLabel_en-US" xlink:label="lab_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Poplar Street</link:label>
    <link:label id="lab_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2_label_en-US" xlink:label="lab_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Poplar Street [Member]</link:label>
    <link:label id="lab_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2_documentation_en-US" xlink:label="lab_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Poplar Street [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PoplarStreetMember" xlink:label="loc_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2" xlink:to="lab_land_PoplarStreetMember_B7F22CBACC703024373B280791E7D6F2" xlink:type="arc" />
    <link:label id="lab_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D_terseLabel_en-US" xlink:label="lab_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Phelps Avenue</link:label>
    <link:label id="lab_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D_label_en-US" xlink:label="lab_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Phelps Avenue [Member]</link:label>
    <link:label id="lab_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D_documentation_en-US" xlink:label="lab_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Phelps Avenue [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PhelpsAvenueMember" xlink:label="loc_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D" xlink:to="lab_land_PhelpsAvenueMember_EA11FCF1A69AA29027BD280791E7B78D" xlink:type="arc" />
    <link:label id="lab_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E_terseLabel_en-US" xlink:label="lab_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Parrot Avenue</link:label>
    <link:label id="lab_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E_label_en-US" xlink:label="lab_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Parrot Avenue [Member]</link:label>
    <link:label id="lab_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E_documentation_en-US" xlink:label="lab_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Parrot Avenue [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ParrotAvenueMember" xlink:label="loc_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E" xlink:to="lab_land_ParrotAvenueMember_DEB8AAD19E6DB56D119E280791E71C4E" xlink:type="arc" />
    <link:label id="lab_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE_terseLabel_en-US" xlink:label="lab_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Oasis Road</link:label>
    <link:label id="lab_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE_label_en-US" xlink:label="lab_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Oasis Road [Member]</link:label>
    <link:label id="lab_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE_documentation_en-US" xlink:label="lab_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Oasis Road [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OasisRoadMember" xlink:label="loc_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE" xlink:to="lab_land_OasisRoadMember_389C29B42B6BE24189F3280791E773CE" xlink:type="arc" />
    <link:label id="lab_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B_terseLabel_en-US" xlink:label="lab_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">JJ Road</link:label>
    <link:label id="lab_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B_label_en-US" xlink:label="lab_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">JJ Road [Member]</link:label>
    <link:label id="lab_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B_documentation_en-US" xlink:label="lab_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">JJ Road [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_JJRoadMember" xlink:label="loc_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B" xlink:to="lab_land_JJRoadMember_124895B6628B67DBF78D280791E79D3B" xlink:type="arc" />
    <link:label id="lab_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D_terseLabel_en-US" xlink:label="lab_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Jayne Avenue</link:label>
    <link:label id="lab_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D_label_en-US" xlink:label="lab_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Jayne Avenue [Member]</link:label>
    <link:label id="lab_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D_documentation_en-US" xlink:label="lab_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Jayne Avenue [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_JayneAvenueMember" xlink:label="loc_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D" xlink:to="lab_land_JayneAvenueMember_E93E83CDC648A8BDF36D280791E7CF2D" xlink:type="arc" />
    <link:label id="lab_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C_terseLabel_en-US" xlink:label="lab_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Martin, FL</link:label>
    <link:label id="lab_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C_label_en-US" xlink:label="lab_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Martin County, Florida [Member]</link:label>
    <link:label id="lab_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C_documentation_en-US" xlink:label="lab_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Martin County, Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MartinCountyFloridaMember" xlink:label="loc_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C" xlink:to="lab_land_MartinCountyFloridaMember_FB3952E412CB2B696B9A280791E7A74C" xlink:type="arc" />
    <link:label id="lab_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2_terseLabel_en-US" xlink:label="lab_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Yuma, AZ</link:label>
    <link:label id="lab_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2_label_en-US" xlink:label="lab_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Yuma, Arizona [Member]</link:label>
    <link:label id="lab_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2_documentation_en-US" xlink:label="lab_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Yuma, Arizona [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_YumaArizonaMember" xlink:label="loc_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2" xlink:to="lab_land_YumaArizonaMember_1AD050B9B95EB839468B280791E772D2" xlink:type="arc" />
    <link:label id="lab_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A_terseLabel_en-US" xlink:label="lab_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bladen, NC</link:label>
    <link:label id="lab_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A_label_en-US" xlink:label="lab_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bladen County North Carolina [Member]</link:label>
    <link:label id="lab_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A_documentation_en-US" xlink:label="lab_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bladen County North Carolina [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BladenCountyNorthCarolinaMember" xlink:label="loc_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A" xlink:to="lab_land_BladenCountyNorthCarolinaMember_F23D4B563887E9895FD1280791E7AC1A" xlink:type="arc" />
    <link:label id="lab_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31_terseLabel_en-US" xlink:label="lab_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fresno, CA</link:label>
    <link:label id="lab_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31_label_en-US" xlink:label="lab_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fresno County, California [Member]</link:label>
    <link:label id="lab_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31_documentation_en-US" xlink:label="lab_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fresno County, California [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FresnoCountyCaliforniaMember" xlink:label="loc_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31" xlink:to="lab_land_FresnoCountyCaliforniaMember_3E5119F2AB9CAFC7ECB5280791E76E31" xlink:type="arc" />
    <link:label id="lab_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11_terseLabel_en-US" xlink:label="lab_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Okeechobee, FL</link:label>
    <link:label id="lab_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11_label_en-US" xlink:label="lab_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Okeechobee County Florida [Member]</link:label>
    <link:label id="lab_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11_documentation_en-US" xlink:label="lab_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Okeechobee County Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OkeechobeeCountyFloridaMember" xlink:label="loc_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11" xlink:to="lab_land_OkeechobeeCountyFloridaMember_F25F24D55872B74246C2280791E74D11" xlink:type="arc" />
    <link:label id="lab_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2_terseLabel_en-US" xlink:label="lab_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Walla Walla, WA</link:label>
    <link:label id="lab_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2_label_en-US" xlink:label="lab_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Walla Walla County Washington [Member]</link:label>
    <link:label id="lab_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2_documentation_en-US" xlink:label="lab_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Walla Walla County Washington [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_WallaWallaCountyWashingtonMember" xlink:label="loc_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2" xlink:to="lab_land_WallaWallaCountyWashingtonMember_5AB4D660B5DE8A1D2A22280791E7FFE2" xlink:type="arc" />
    <link:label id="lab_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089_terseLabel_en-US" xlink:label="lab_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Baca, CO</link:label>
    <link:label id="lab_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089_label_en-US" xlink:label="lab_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Baca, CO [Member]</link:label>
    <link:label id="lab_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089_documentation_en-US" xlink:label="lab_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Baca, CO [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BacaCOMember" xlink:label="loc_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089" xlink:to="lab_land_BacaCOMember_920A0C99A32CDB6C5114280791E73089" xlink:type="arc" />
    <link:label id="lab_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA_terseLabel_en-US" xlink:label="lab_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fresno, CA</link:label>
    <link:label id="lab_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA_label_en-US" xlink:label="lab_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fresno, CA [Member]</link:label>
    <link:label id="lab_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA_documentation_en-US" xlink:label="lab_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fresno, CA [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FresnoCAMember" xlink:label="loc_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA" xlink:to="lab_land_FresnoCAMember_13DEC7A456B490724644280791E71DAA" xlink:type="arc" />
    <link:label id="lab_srt_RangeAxis_E30599A9CC1CFECCBA96280791E7C78C_terseLabel_en-US" xlink:label="lab_srt_RangeAxis_E30599A9CC1CFECCBA96280791E7C78C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:label id="lab_srt_RangeAxis_E30599A9CC1CFECCBA96280791E7C78C_label_en-US" xlink:label="lab_srt_RangeAxis_E30599A9CC1CFECCBA96280791E7C78C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeAxis" xlink:label="loc_srt_RangeAxis_E30599A9CC1CFECCBA96280791E7C78C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeAxis_E30599A9CC1CFECCBA96280791E7C78C" xlink:to="lab_srt_RangeAxis_E30599A9CC1CFECCBA96280791E7C78C" xlink:type="arc" />
    <link:label id="lab_srt_RangeMember_C9606EF6ED05F3FDBF9C280791E7CBEC_terseLabel_en-US" xlink:label="lab_srt_RangeMember_C9606EF6ED05F3FDBF9C280791E7CBEC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:label id="lab_srt_RangeMember_C9606EF6ED05F3FDBF9C280791E7CBEC_label_en-US" xlink:label="lab_srt_RangeMember_C9606EF6ED05F3FDBF9C280791E7CBEC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Range [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RangeMember" xlink:label="loc_srt_RangeMember_C9606EF6ED05F3FDBF9C280791E7CBEC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RangeMember_C9606EF6ED05F3FDBF9C280791E7CBEC" xlink:to="lab_srt_RangeMember_C9606EF6ED05F3FDBF9C280791E7CBEC" xlink:type="arc" />
    <link:label id="lab_srt_WeightedAverageMember_B4F122CCDF873239B118280791E70D66_terseLabel_en-US" xlink:label="lab_srt_WeightedAverageMember_B4F122CCDF873239B118280791E70D66" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average</link:label>
    <link:label id="lab_srt_WeightedAverageMember_B4F122CCDF873239B118280791E70D66_label_en-US" xlink:label="lab_srt_WeightedAverageMember_B4F122CCDF873239B118280791E70D66" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_WeightedAverageMember" xlink:label="loc_srt_WeightedAverageMember_B4F122CCDF873239B118280791E70D66" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_WeightedAverageMember_B4F122CCDF873239B118280791E70D66" xlink:to="lab_srt_WeightedAverageMember_B4F122CCDF873239B118280791E70D66" xlink:type="arc" />
    <link:label id="lab_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3_terseLabel_en-US" xlink:label="lab_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease One</link:label>
    <link:label id="lab_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3_label_en-US" xlink:label="lab_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease One [Member]</link:label>
    <link:label id="lab_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3_documentation_en-US" xlink:label="lab_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease One [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeaseOneMember" xlink:label="loc_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3" xlink:to="lab_land_LeaseOneMember_EF75CAED3A0EB2C62F86280791E7B6E3" xlink:type="arc" />
    <link:label id="lab_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E_terseLabel_en-US" xlink:label="lab_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease Two</link:label>
    <link:label id="lab_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E_label_en-US" xlink:label="lab_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Two [Member]</link:label>
    <link:label id="lab_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E_documentation_en-US" xlink:label="lab_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Two [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeaseTwoMember" xlink:label="loc_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E" xlink:to="lab_land_LeaseTwoMember_193DA2F447196744105B280791E7CD0E" xlink:type="arc" />
    <link:label id="lab_srt_CounterpartyNameAxis_371086FF96631463C5AF280791E7ACAA_terseLabel_en-US" xlink:label="lab_srt_CounterpartyNameAxis_371086FF96631463C5AF280791E7ACAA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Counterparty Name [Axis]</link:label>
    <link:label id="lab_srt_CounterpartyNameAxis_371086FF96631463C5AF280791E7ACAA_label_en-US" xlink:label="lab_srt_CounterpartyNameAxis_371086FF96631463C5AF280791E7ACAA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Counterparty Name [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_CounterpartyNameAxis" xlink:label="loc_srt_CounterpartyNameAxis_371086FF96631463C5AF280791E7ACAA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_CounterpartyNameAxis_371086FF96631463C5AF280791E7ACAA" xlink:to="lab_srt_CounterpartyNameAxis_371086FF96631463C5AF280791E7ACAA" xlink:type="arc" />
    <link:label id="lab_srt_RepurchaseAgreementCounterpartyNameDomain_250674617F6209C8030B280791E761E1_terseLabel_en-US" xlink:label="lab_srt_RepurchaseAgreementCounterpartyNameDomain_250674617F6209C8030B280791E761E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Counterparty Name [Domain]</link:label>
    <link:label id="lab_srt_RepurchaseAgreementCounterpartyNameDomain_250674617F6209C8030B280791E761E1_label_en-US" xlink:label="lab_srt_RepurchaseAgreementCounterpartyNameDomain_250674617F6209C8030B280791E761E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Counterparty Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RepurchaseAgreementCounterpartyNameDomain" xlink:label="loc_srt_RepurchaseAgreementCounterpartyNameDomain_250674617F6209C8030B280791E761E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RepurchaseAgreementCounterpartyNameDomain_250674617F6209C8030B280791E761E1" xlink:to="lab_srt_RepurchaseAgreementCounterpartyNameDomain_250674617F6209C8030B280791E761E1" xlink:type="arc" />
    <link:label id="lab_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817_terseLabel_en-US" xlink:label="lab_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">State of Arizona</link:label>
    <link:label id="lab_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817_label_en-US" xlink:label="lab_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">State of Arizona [Member]</link:label>
    <link:label id="lab_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817_documentation_en-US" xlink:label="lab_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">State of Arizona [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_StateofArizonaMember" xlink:label="loc_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817" xlink:to="lab_land_StateofArizonaMember_9B8C3575D22ABD588DD5280791E71817" xlink:type="arc" />
    <link:label id="lab_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F_terseLabel_en-US" xlink:label="lab_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Two</link:label>
    <link:label id="lab_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F_label_en-US" xlink:label="lab_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tenant Two [Member]</link:label>
    <link:label id="lab_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F_documentation_en-US" xlink:label="lab_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tenant Two [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TenantTwoMember" xlink:label="loc_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F" xlink:to="lab_land_TenantTwoMember_CC8BA5D0D81E828D4934280791E7043F" xlink:type="arc" />
    <link:label id="lab_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B_terseLabel_en-US" xlink:label="lab_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant One</link:label>
    <link:label id="lab_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B_label_en-US" xlink:label="lab_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tenant One [Member]</link:label>
    <link:label id="lab_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B_documentation_en-US" xlink:label="lab_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tenant One [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TenantOneMember" xlink:label="loc_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B" xlink:to="lab_land_TenantOneMember_09AAD2EF9B9363B726A6280791E76A5B" xlink:type="arc" />
    <link:label id="lab_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E_verboseLabel_en-US" xlink:label="lab_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">No. of Farms</link:label>
    <link:label id="lab_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E_label_en-US" xlink:label="lab_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Real Estate Farms</link:label>
    <link:label id="lab_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E_documentation_en-US" xlink:label="lab_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of real estate farms.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfRealEstateFarms" xlink:label="loc_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E" xlink:to="lab_land_NumberOfRealEstateFarms_B451AD9B45BE8E1E62D1280791E7FD1E" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B385F3B53731B5324250280791E70E98_verboseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B385F3B53731B5324250280791E70E98" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Acquisition Date</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B385F3B53731B5324250280791E70E98_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B385F3B53731B5324250280791E70E98" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Effective Date of Acquisition</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1" xlink:label="loc_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B385F3B53731B5324250280791E70E98" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B385F3B53731B5324250280791E70E98" xlink:to="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B385F3B53731B5324250280791E70E98" xlink:type="arc" />
    <link:label id="lab_us-gaap_AreaOfRealEstateProperty_A02C979FDBFD49A41002280791E7790B_terseLabel_en-US" xlink:label="lab_us-gaap_AreaOfRealEstateProperty_A02C979FDBFD49A41002280791E7790B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Acres</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AreaOfRealEstateProperty" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_A02C979FDBFD49A41002280791E7790B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AreaOfRealEstateProperty_A02C979FDBFD49A41002280791E7790B" xlink:to="lab_us-gaap_AreaOfRealEstateProperty_A02C979FDBFD49A41002280791E7790B" xlink:type="arc" />
    <link:label id="lab_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764_terseLabel_en-US" xlink:label="lab_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of in-place leases assumed</link:label>
    <link:label id="lab_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764_label_en-US" xlink:label="lab_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of In-Place Leases Assumed</link:label>
    <link:label id="lab_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764_documentation_en-US" xlink:label="lab_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of In-Place Leases Assumed</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberofInPlaceLeasesAssumed" xlink:label="loc_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764" xlink:to="lab_land_NumberofInPlaceLeasesAssumed_259B0ACA21A0F23570E92820C69A7764" xlink:type="arc" />
    <link:label id="lab_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432_terseLabel_en-US" xlink:label="lab_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of in-place agricultural leases assumed</link:label>
    <link:label id="lab_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432_label_en-US" xlink:label="lab_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of InPlace Agricultural Leases Assumed</link:label>
    <link:label id="lab_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432_documentation_en-US" xlink:label="lab_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of InPlace Agricultural Leases Assumed</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberofInPlaceAgriculturalLeasesAssumed" xlink:label="loc_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432" xlink:to="lab_land_NumberofInPlaceAgriculturalLeasesAssumed_76D05F370AF4E774B0052820C6DA1432" xlink:type="arc" />
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA_terseLabel_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Renewal Options</link:label>
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA_label_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee Leasing Arrangement Lease Renewal Options</link:label>
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA_documentation_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee Leasing Arrangement Lease Renewal Options</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LesseeLeasingArrangementLeaseRenewalOptions" xlink:label="loc_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA" xlink:to="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_F5526E2B7A77E2578CEC280791E746DA" xlink:type="arc" />
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD_terseLabel_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term of Renewal</link:label>
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD_label_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee Leasing Arrangement Lease Renewal Term</link:label>
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD_documentation_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lessee leasing arrangement lease renewal term.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LesseeLeasingArrangementLeaseRenewalTerm" xlink:label="loc_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD" xlink:to="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_4A5644F5520E9483EA49280791E768DD" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferred1_C311F8CB41D74C38722F280791E70AE6_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferred1_C311F8CB41D74C38722F280791E70AE6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Purchase Price</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationConsiderationTransferred1_C311F8CB41D74C38722F280791E70AE6_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationConsiderationTransferred1_C311F8CB41D74C38722F280791E70AE6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Consideration Transferred</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationConsiderationTransferred1" xlink:label="loc_us-gaap_BusinessCombinationConsiderationTransferred1_C311F8CB41D74C38722F280791E70AE6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationConsiderationTransferred1_C311F8CB41D74C38722F280791E70AE6" xlink:to="lab_us-gaap_BusinessCombinationConsiderationTransferred1_C311F8CB41D74C38722F280791E70AE6" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_266A11171ADFC2D294F1280791E755BC_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_266A11171ADFC2D294F1280791E755BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition Costs</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_266A11171ADFC2D294F1280791E755BC_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_266A11171ADFC2D294F1280791E755BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Transaction Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts" xlink:label="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_266A11171ADFC2D294F1280791E755BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_266A11171ADFC2D294F1280791E755BC" xlink:to="lab_us-gaap_BusinessAcquisitionCostOfAcquiredEntityTransactionCosts_266A11171ADFC2D294F1280791E755BC" xlink:type="arc" />
    <link:label id="lab_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A_terseLabel_en-US" xlink:label="lab_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Annualized Straight-line Rent</link:label>
    <link:label id="lab_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A_label_en-US" xlink:label="lab_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Annualized Straight Line Rent Escalations</link:label>
    <link:label id="lab_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A_documentation_en-US" xlink:label="lab_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Annualized straight line rent escalations.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AnnualizedStraightLineRentEscalations" xlink:label="loc_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A" xlink:to="lab_land_AnnualizedStraightLineRentEscalations_479E2C96FD9812D39F4D280791E72E1A" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_82183005CA5BB00F9D72280791E77547_verboseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_82183005CA5BB00F9D72280791E77547" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">New Long-term Debt</link:label>
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_82183005CA5BB00F9D72280791E77547_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_82183005CA5BB00F9D72280791E77547" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Amount of Encumbrances</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_82183005CA5BB00F9D72280791E77547" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_82183005CA5BB00F9D72280791E77547" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_82183005CA5BB00F9D72280791E77547" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToDevelopRealEstateAssets_10B749003BA2895E9868280791E71A5F_verboseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToDevelopRealEstateAssets_10B749003BA2895E9868280791E71A5F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Payments to develop real estate assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToDevelopRealEstateAssets" xlink:label="loc_us-gaap_PaymentsToDevelopRealEstateAssets_10B749003BA2895E9868280791E71A5F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToDevelopRealEstateAssets_10B749003BA2895E9868280791E71A5F" xlink:to="lab_us-gaap_PaymentsToDevelopRealEstateAssets_10B749003BA2895E9868280791E71A5F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_1B1F096F5FF34C4A94FD280791E724D2_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_1B1F096F5FF34C4A94FD280791E724D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rental Revenue</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_1B1F096F5FF34C4A94FD280791E724D2_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_1B1F096F5FF34C4A94FD280791E724D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Income Statement, Lease Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesIncomeStatementLeaseRevenue" xlink:label="loc_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_1B1F096F5FF34C4A94FD280791E724D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_1B1F096F5FF34C4A94FD280791E724D2" xlink:to="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_1B1F096F5FF34C4A94FD280791E724D2" xlink:type="arc" />
    <link:label id="lab_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C_terseLabel_en-US" xlink:label="lab_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Earnings</link:label>
    <link:label id="lab_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C_label_en-US" xlink:label="lab_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Properties Earnings Recognized</link:label>
    <link:label id="lab_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C_documentation_en-US" xlink:label="lab_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate properties earnings recognized.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstatePropertiesEarningsRecognized" xlink:label="loc_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C" xlink:to="lab_land_RealEstatePropertiesEarningsRecognized_614D937CCFD64897F51C280791E7B99C" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfFinancialPositionAbstract_A731CCB4FBA2EB0CD8221BAC26D01773_label_en-US" xlink:label="lab_us-gaap_StatementOfFinancialPositionAbstract_A731CCB4FBA2EB0CD8221BAC26D01773" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Financial Position [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfFinancialPositionAbstract" xlink:label="loc_us-gaap_StatementOfFinancialPositionAbstract_A731CCB4FBA2EB0CD8221BAC26D01773" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfFinancialPositionAbstract_A731CCB4FBA2EB0CD8221BAC26D01773" xlink:to="lab_us-gaap_StatementOfFinancialPositionAbstract_A731CCB4FBA2EB0CD8221BAC26D01773" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsAbstract_45C185077E96BBDE7F3A1BAC26D14795_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsAbstract_45C185077E96BBDE7F3A1BAC26D14795" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ASSETS</link:label>
    <link:label id="lab_us-gaap_AssetsAbstract_45C185077E96BBDE7F3A1BAC26D14795_label_en-US" xlink:label="lab_us-gaap_AssetsAbstract_45C185077E96BBDE7F3A1BAC26D14795" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AssetsAbstract" xlink:label="loc_us-gaap_AssetsAbstract_45C185077E96BBDE7F3A1BAC26D14795" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AssetsAbstract_45C185077E96BBDE7F3A1BAC26D14795" xlink:to="lab_us-gaap_AssetsAbstract_45C185077E96BBDE7F3A1BAC26D14795" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyNet_E7819D37A09B478C40901BAC26D16041_verboseLabel_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyNet_E7819D37A09B478C40901BAC26D16041" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Investment in real estate, net</link:label>
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyNet_E7819D37A09B478C40901BAC26D16041_label_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyNet_E7819D37A09B478C40901BAC26D16041" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Investment Property, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNet" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNet_E7819D37A09B478C40901BAC26D16041" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNet_E7819D37A09B478C40901BAC26D16041" xlink:to="lab_us-gaap_RealEstateInvestmentPropertyNet_E7819D37A09B478C40901BAC26D16041" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_1A9652D1855795159ED41BAC26D2F494_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_1A9652D1855795159ED41BAC26D2F494" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease intangibles, net</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_1A9652D1855795159ED41BAC26D2F494_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_1A9652D1855795159ED41BAC26D2F494" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1A9652D1855795159ED41BAC26D2F494" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_1A9652D1855795159ED41BAC26D2F494" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_1A9652D1855795159ED41BAC26D2F494" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FEA813B26E966984F3CF1BAC26D2BACE_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FEA813B26E966984F3CF1BAC26D2BACE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FEA813B26E966984F3CF1BAC26D2BACE_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FEA813B26E966984F3CF1BAC26D2BACE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_FEA813B26E966984F3CF1BAC26D2BACE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_FEA813B26E966984F3CF1BAC26D2BACE" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_FEA813B26E966984F3CF1BAC26D2BACE" xlink:type="arc" />
    <link:label id="lab_us-gaap_AgriculturalRelatedInventory_575400D292797FE9CA541BAC26D21940_terseLabel_en-US" xlink:label="lab_us-gaap_AgriculturalRelatedInventory_575400D292797FE9CA541BAC26D21940" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crop inventory</link:label>
    <link:label id="lab_us-gaap_AgriculturalRelatedInventory_575400D292797FE9CA541BAC26D21940_label_en-US" xlink:label="lab_us-gaap_AgriculturalRelatedInventory_575400D292797FE9CA541BAC26D21940" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Agricultural Related Inventory</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgriculturalRelatedInventory" xlink:label="loc_us-gaap_AgriculturalRelatedInventory_575400D292797FE9CA541BAC26D21940" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AgriculturalRelatedInventory_575400D292797FE9CA541BAC26D21940" xlink:to="lab_us-gaap_AgriculturalRelatedInventory_575400D292797FE9CA541BAC26D21940" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssets_7AE8470B873F9167430A1BAC26D238ED_terseLabel_en-US" xlink:label="lab_us-gaap_OtherAssets_7AE8470B873F9167430A1BAC26D238ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other assets, net</link:label>
    <link:label id="lab_us-gaap_OtherAssets_7AE8470B873F9167430A1BAC26D238ED_label_en-US" xlink:label="lab_us-gaap_OtherAssets_7AE8470B873F9167430A1BAC26D238ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets_7AE8470B873F9167430A1BAC26D238ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssets_7AE8470B873F9167430A1BAC26D238ED" xlink:to="lab_us-gaap_OtherAssets_7AE8470B873F9167430A1BAC26D238ED" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_85170045BA671A6C24691BAC26D34849_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_85170045BA671A6C24691BAC26D34849" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">TOTAL ASSETS</link:label>
    <link:label id="lab_us-gaap_Assets_85170045BA671A6C24691BAC26D34849_label_en-US" xlink:label="lab_us-gaap_Assets_85170045BA671A6C24691BAC26D34849" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_85170045BA671A6C24691BAC26D34849" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_85170045BA671A6C24691BAC26D34849" xlink:to="lab_us-gaap_Assets_85170045BA671A6C24691BAC26D34849" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_C70631D6BEBD3676240C1BAC26D3E63B_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_C70631D6BEBD3676240C1BAC26D3E63B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIABILITIES AND EQUITY</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_C70631D6BEBD3676240C1BAC26D3E63B_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_C70631D6BEBD3676240C1BAC26D3E63B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquityAbstract" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_C70631D6BEBD3676240C1BAC26D3E63B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquityAbstract_C70631D6BEBD3676240C1BAC26D3E63B" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_C70631D6BEBD3676240C1BAC26D3E63B" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAbstract_486E30D597DE3D543D221BAC26D34602_terseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_486E30D597DE3D543D221BAC26D34602" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIABILITIES:</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAbstract_486E30D597DE3D543D221BAC26D34602_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_486E30D597DE3D543D221BAC26D34602" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="loc_us-gaap_LiabilitiesAbstract_486E30D597DE3D543D221BAC26D34602" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAbstract_486E30D597DE3D543D221BAC26D34602" xlink:to="lab_us-gaap_LiabilitiesAbstract_486E30D597DE3D543D221BAC26D34602" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCredit_49FE2BAB1D0C4AE51C591BAC26D48151_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_49FE2BAB1D0C4AE51C591BAC26D48151" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings under lines of credit</link:label>
    <link:label id="lab_us-gaap_LineOfCredit_49FE2BAB1D0C4AE51C591BAC26D48151_label_en-US" xlink:label="lab_us-gaap_LineOfCredit_49FE2BAB1D0C4AE51C591BAC26D48151" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Line of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_49FE2BAB1D0C4AE51C591BAC26D48151" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCredit_49FE2BAB1D0C4AE51C591BAC26D48151" xlink:to="lab_us-gaap_LineOfCredit_49FE2BAB1D0C4AE51C591BAC26D48151" xlink:type="arc" />
    <link:label id="lab_us-gaap_SecuredLongTermDebt_D04F4E52623DE3CD15661BAC26D4C433_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredLongTermDebt_D04F4E52623DE3CD15661BAC26D4C433" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes and bonds payable, net</link:label>
    <link:label id="lab_us-gaap_SecuredLongTermDebt_D04F4E52623DE3CD15661BAC26D4C433_label_en-US" xlink:label="lab_us-gaap_SecuredLongTermDebt_D04F4E52623DE3CD15661BAC26D4C433" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Long-term Debt, Noncurrent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SecuredLongTermDebt" xlink:label="loc_us-gaap_SecuredLongTermDebt_D04F4E52623DE3CD15661BAC26D4C433" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SecuredLongTermDebt_D04F4E52623DE3CD15661BAC26D4C433" xlink:to="lab_us-gaap_SecuredLongTermDebt_D04F4E52623DE3CD15661BAC26D4C433" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_40B6EEB393E465036E741BAC26D416FE_terseLabel_en-US" xlink:label="lab_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_40B6EEB393E465036E741BAC26D416FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Series A cumulative term preferred stock, $0.001 par value; $25.00 per share liquidation preference; 2,000,000 shares authorized, 1,150,000 shares issued and outstanding as of December 31, 2018 and 2017, net</link:label>
    <link:label id="lab_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_40B6EEB393E465036E741BAC26D416FE_label_en-US" xlink:label="lab_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_40B6EEB393E465036E741BAC26D416FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount" xlink:label="loc_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_40B6EEB393E465036E741BAC26D416FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_40B6EEB393E465036E741BAC26D416FE" xlink:to="lab_us-gaap_SharesSubjectToMandatoryRedemptionSettlementTermsAmount_40B6EEB393E465036E741BAC26D416FE" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_BD6A824DDA7A299FB79E1BAC26D4D7DE_terseLabel_en-US" xlink:label="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_BD6A824DDA7A299FB79E1BAC26D4D7DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable and accrued expenses</link:label>
    <link:label id="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_BD6A824DDA7A299FB79E1BAC26D4D7DE_label_en-US" xlink:label="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_BD6A824DDA7A299FB79E1BAC26D4D7DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Payable and Accrued Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_BD6A824DDA7A299FB79E1BAC26D4D7DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_BD6A824DDA7A299FB79E1BAC26D4D7DE" xlink:to="lab_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_BD6A824DDA7A299FB79E1BAC26D4D7DE" xlink:type="arc" />
    <link:label id="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_5D1863C5C42B87A3643E1BAC26D5C16B_terseLabel_en-US" xlink:label="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_5D1863C5C42B87A3643E1BAC26D5C16B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due to related parties, net</link:label>
    <link:label id="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_5D1863C5C42B87A3643E1BAC26D5C16B_label_en-US" xlink:label="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_5D1863C5C42B87A3643E1BAC26D5C16B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due to Related Parties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_5D1863C5C42B87A3643E1BAC26D5C16B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_5D1863C5C42B87A3643E1BAC26D5C16B" xlink:to="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_5D1863C5C42B87A3643E1BAC26D5C16B" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherLiabilities_10D55C9BDDD0D28AA5C71BAC26D5BE5E_terseLabel_en-US" xlink:label="lab_us-gaap_OtherLiabilities_10D55C9BDDD0D28AA5C71BAC26D5BE5E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities, net</link:label>
    <link:label id="lab_us-gaap_OtherLiabilities_10D55C9BDDD0D28AA5C71BAC26D5BE5E_label_en-US" xlink:label="lab_us-gaap_OtherLiabilities_10D55C9BDDD0D28AA5C71BAC26D5BE5E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherLiabilities" xlink:label="loc_us-gaap_OtherLiabilities_10D55C9BDDD0D28AA5C71BAC26D5BE5E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherLiabilities_10D55C9BDDD0D28AA5C71BAC26D5BE5E" xlink:to="lab_us-gaap_OtherLiabilities_10D55C9BDDD0D28AA5C71BAC26D5BE5E" xlink:type="arc" />
    <link:label id="lab_us-gaap_Liabilities_E9441AC81493831C06A61BAC26D56D84_totalLabel_en-US" xlink:label="lab_us-gaap_Liabilities_E9441AC81493831C06A61BAC26D56D84" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total liabilities</link:label>
    <link:label id="lab_us-gaap_Liabilities_E9441AC81493831C06A61BAC26D56D84_label_en-US" xlink:label="lab_us-gaap_Liabilities_E9441AC81493831C06A61BAC26D56D84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Liabilities" xlink:label="loc_us-gaap_Liabilities_E9441AC81493831C06A61BAC26D56D84" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Liabilities_E9441AC81493831C06A61BAC26D56D84" xlink:to="lab_us-gaap_Liabilities_E9441AC81493831C06A61BAC26D56D84" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_C34781A3AAA2CFF8BEC31BAC26D51FC6_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_C34781A3AAA2CFF8BEC31BAC26D51FC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and contingencies (Note 8)</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingencies_C34781A3AAA2CFF8BEC31BAC26D51FC6_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingencies_C34781A3AAA2CFF8BEC31BAC26D51FC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingencies" xlink:label="loc_us-gaap_CommitmentsAndContingencies_C34781A3AAA2CFF8BEC31BAC26D51FC6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingencies_C34781A3AAA2CFF8BEC31BAC26D51FC6" xlink:to="lab_us-gaap_CommitmentsAndContingencies_C34781A3AAA2CFF8BEC31BAC26D51FC6" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_7A626397197A9A9532C41BAC26D54E26_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_7A626397197A9A9532C41BAC26D54E26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">EQUITY:</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_7A626397197A9A9532C41BAC26D54E26_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_7A626397197A9A9532C41BAC26D54E26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_7A626397197A9A9532C41BAC26D54E26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_7A626397197A9A9532C41BAC26D54E26" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_7A626397197A9A9532C41BAC26D54E26" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_041D770F2A88608090BF1BAC26D6BCDF_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_041D770F2A88608090BF1BAC26D6BCDF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stockholders&#8217; equity:</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityAbstract_041D770F2A88608090BF1BAC26D6BCDF_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityAbstract_041D770F2A88608090BF1BAC26D6BCDF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityAbstract" xlink:label="loc_us-gaap_StockholdersEquityAbstract_041D770F2A88608090BF1BAC26D6BCDF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityAbstract_041D770F2A88608090BF1BAC26D6BCDF" xlink:to="lab_us-gaap_StockholdersEquityAbstract_041D770F2A88608090BF1BAC26D6BCDF" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockValue_A7287A16A6921BBBCC821BAC26D692B8_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockValue_A7287A16A6921BBBCC821BAC26D692B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Series B cumulative redeemable preferred stock, $0.001 par value; $25.00 per share liquidation preference; 6,500,000 shares authorized, 1,144,393 shares issued and outstanding as of December 31, 2018; no shares authorized, issued, or outstanding as of December 31, 2017</link:label>
    <link:label id="lab_us-gaap_PreferredStockValue_A7287A16A6921BBBCC821BAC26D692B8_label_en-US" xlink:label="lab_us-gaap_PreferredStockValue_A7287A16A6921BBBCC821BAC26D692B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Value, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockValue" xlink:label="loc_us-gaap_PreferredStockValue_A7287A16A6921BBBCC821BAC26D692B8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockValue_A7287A16A6921BBBCC821BAC26D692B8" xlink:to="lab_us-gaap_PreferredStockValue_A7287A16A6921BBBCC821BAC26D692B8" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockValue_04BD748F8616C37355191BAC26D65C84_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValue_04BD748F8616C37355191BAC26D65C84" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, $0.001 par value; 91,500,000 shares authorized, 17,891,340 shares issued and outstanding as of December 31, 2018; 98,000,000 shares authorized, 13,791,574 shares issued and outstanding as of December 31, 2017</link:label>
    <link:label id="lab_us-gaap_CommonStockValue_04BD748F8616C37355191BAC26D65C84_label_en-US" xlink:label="lab_us-gaap_CommonStockValue_04BD748F8616C37355191BAC26D65C84" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Value, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValue" xlink:label="loc_us-gaap_CommonStockValue_04BD748F8616C37355191BAC26D65C84" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValue_04BD748F8616C37355191BAC26D65C84" xlink:to="lab_us-gaap_CommonStockValue_04BD748F8616C37355191BAC26D65C84" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E96045F4C9FF2B1337751BAC26D6B13E_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E96045F4C9FF2B1337751BAC26D6B13E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional paid-in capital</link:label>
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E96045F4C9FF2B1337751BAC26D6B13E_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E96045F4C9FF2B1337751BAC26D6B13E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid in Capital, Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalCommonStock" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_E96045F4C9FF2B1337751BAC26D6B13E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalCommonStock_E96045F4C9FF2B1337751BAC26D6B13E" xlink:to="lab_us-gaap_AdditionalPaidInCapitalCommonStock_E96045F4C9FF2B1337751BAC26D6B13E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncome_D06C4F42045CA857C91E1BAC26D79606_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncome_D06C4F42045CA857C91E1BAC26D79606" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Distributions in excess of accumulated earnings</link:label>
    <link:label id="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncome_D06C4F42045CA857C91E1BAC26D79606_label_en-US" xlink:label="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncome_D06C4F42045CA857C91E1BAC26D79606" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Distributions in Excess of Net Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncome" xlink:label="loc_us-gaap_AccumulatedDistributionsInExcessOfNetIncome_D06C4F42045CA857C91E1BAC26D79606" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDistributionsInExcessOfNetIncome_D06C4F42045CA857C91E1BAC26D79606" xlink:to="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncome_D06C4F42045CA857C91E1BAC26D79606" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquity_5D989F84E63BF1242A1F1BAC26D7BA57_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquity_5D989F84E63BF1242A1F1BAC26D7BA57" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total stockholders&#8217; equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquity_5D989F84E63BF1242A1F1BAC26D7BA57_label_en-US" xlink:label="lab_us-gaap_StockholdersEquity_5D989F84E63BF1242A1F1BAC26D7BA57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquity" xlink:label="loc_us-gaap_StockholdersEquity_5D989F84E63BF1242A1F1BAC26D7BA57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquity_5D989F84E63BF1242A1F1BAC26D7BA57" xlink:to="lab_us-gaap_StockholdersEquity_5D989F84E63BF1242A1F1BAC26D7BA57" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinorityInterestInOperatingPartnerships_8F755E75AB55116F6B281BAC26D7B6CF_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterestInOperatingPartnerships_8F755E75AB55116F6B281BAC26D7B6CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-controlling interests in Operating Partnership</link:label>
    <link:label id="lab_us-gaap_MinorityInterestInOperatingPartnerships_8F755E75AB55116F6B281BAC26D7B6CF_label_en-US" xlink:label="lab_us-gaap_MinorityInterestInOperatingPartnerships_8F755E75AB55116F6B281BAC26D7B6CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest in Operating Partnerships</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterestInOperatingPartnerships" xlink:label="loc_us-gaap_MinorityInterestInOperatingPartnerships_8F755E75AB55116F6B281BAC26D7B6CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterestInOperatingPartnerships_8F755E75AB55116F6B281BAC26D7B6CF" xlink:to="lab_us-gaap_MinorityInterestInOperatingPartnerships_8F755E75AB55116F6B281BAC26D7B6CF" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D75ABF1425083B3482401BAC26D7300E_totalLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D75ABF1425083B3482401BAC26D7300E" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D75ABF1425083B3482401BAC26D7300E_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D75ABF1425083B3482401BAC26D7300E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D75ABF1425083B3482401BAC26D7300E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D75ABF1425083B3482401BAC26D7300E" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_D75ABF1425083B3482401BAC26D7300E" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_ACE98D080FDA613DB6821BAC26D79F36_totalLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_ACE98D080FDA613DB6821BAC26D79F36" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">TOTAL LIABILITIES AND EQUITY</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquity_ACE98D080FDA613DB6821BAC26D79F36_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquity_ACE98D080FDA613DB6821BAC26D79F36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_ACE98D080FDA613DB6821BAC26D79F36" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_ACE98D080FDA613DB6821BAC26D79F36" xlink:to="lab_us-gaap_LiabilitiesAndStockholdersEquity_ACE98D080FDA613DB6821BAC26D79F36" xlink:type="arc" />
    <link:label id="lab_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4_terseLabel_en-US" xlink:label="lab_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease expense</link:label>
    <link:label id="lab_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4_label_en-US" xlink:label="lab_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finance Lease, Cost</link:label>
    <link:label id="lab_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4_documentation_en-US" xlink:label="lab_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finance Lease, Cost</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FinanceLeaseCost" xlink:label="loc_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4" xlink:to="lab_land_FinanceLeaseCost_B0770DABCFA289211D4F21C50E57A2B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_79783B05C042374E0D6A21C50E5709A1_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_79783B05C042374E0D6A21C50E5709A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_79783B05C042374E0D6A21C50E5709A1_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_79783B05C042374E0D6A21C50E5709A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments Due in Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_79783B05C042374E0D6A21C50E5709A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_79783B05C042374E0D6A21C50E5709A1" xlink:to="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInTwoYears_79783B05C042374E0D6A21C50E5709A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_C490D322F16076E3019A21C50E579446_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_C490D322F16076E3019A21C50E579446" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_C490D322F16076E3019A21C50E579446_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_C490D322F16076E3019A21C50E579446" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments Due in Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_C490D322F16076E3019A21C50E579446" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_C490D322F16076E3019A21C50E579446" xlink:to="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInThreeYears_C490D322F16076E3019A21C50E579446" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_97333D377E78E14410D821C50E57B3C5_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_97333D377E78E14410D821C50E57B3C5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_97333D377E78E14410D821C50E57B3C5_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_97333D377E78E14410D821C50E57B3C5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments Due in Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_97333D377E78E14410D821C50E57B3C5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_97333D377E78E14410D821C50E57B3C5" xlink:to="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFourYears_97333D377E78E14410D821C50E57B3C5" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_250630B7BA75F214663621C50E58CB61_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_250630B7BA75F214663621C50E58CB61" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_250630B7BA75F214663621C50E58CB61_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_250630B7BA75F214663621C50E58CB61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments Due in Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_250630B7BA75F214663621C50E58CB61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_250630B7BA75F214663621C50E58CB61" xlink:to="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueInFiveYears_250630B7BA75F214663621C50E58CB61" xlink:type="arc" />
    <link:label id="lab_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5_terseLabel_en-US" xlink:label="lab_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5_label_en-US" xlink:label="lab_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments, Due in Six Years</link:label>
    <link:label id="lab_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5_documentation_en-US" xlink:label="lab_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments, Due in Six Years</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CapitalLeasesFutureMinimumPaymentsDueinSixYears" xlink:label="loc_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5" xlink:to="lab_land_CapitalLeasesFutureMinimumPaymentsDueinSixYears_3E91E82F63B0A6837F5E21C50E58C4B5" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_041CAF1AD6FB9F18C4CC21C50E583F82_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_041CAF1AD6FB9F18C4CC21C50E583F82" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_041CAF1AD6FB9F18C4CC21C50E583F82_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_041CAF1AD6FB9F18C4CC21C50E583F82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments Due Thereafter</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_041CAF1AD6FB9F18C4CC21C50E583F82" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_041CAF1AD6FB9F18C4CC21C50E583F82" xlink:to="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDueThereafter_041CAF1AD6FB9F18C4CC21C50E583F82" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_61AA7C1C5F34A14C1EFD21C50E58AA39_totalLabel_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_61AA7C1C5F34A14C1EFD21C50E58AA39" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total</link:label>
    <link:label id="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_61AA7C1C5F34A14C1EFD21C50E58AA39_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_61AA7C1C5F34A14C1EFD21C50E58AA39" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Future Minimum Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_61AA7C1C5F34A14C1EFD21C50E58AA39" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_61AA7C1C5F34A14C1EFD21C50E58AA39" xlink:to="lab_us-gaap_CapitalLeasesFutureMinimumPaymentsDue_61AA7C1C5F34A14C1EFD21C50E58AA39" xlink:type="arc" />
    <link:label id="lab_us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_792495E7CDEB8BBD98F235550961FF83_terseLabel_en-US" xlink:label="lab_us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_031D05C6B2075FEF977AFA2913470B44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_792495E7CDEB8BBD98F235550961FF83_label_en-US" xlink:label="lab_us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_031D05C6B2075FEF977AFA2913470B44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward" xlink:label="loc_us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_031D05C6B2075FEF977AFA2913470B44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_031D05C6B2075FEF977AFA2913470B44" xlink:to="lab_us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_031D05C6B2075FEF977AFA2913470B44" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAccumulatedDepreciation_0629E7204855210B124B35550961CC19_periodStartLabel_en-US" xlink:label="lab_us-gaap_RealEstateAccumulatedDepreciation_60ED30F77E2D5CD7B80132D2F109FB34" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Balance, beginning of period</link:label>
    <link:label id="lab_us-gaap_RealEstateAccumulatedDepreciation_0629E7204855210B124B35550961CC19_label_en-US" xlink:label="lab_us-gaap_RealEstateAccumulatedDepreciation_60ED30F77E2D5CD7B80132D2F109FB34" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciation" xlink:label="loc_us-gaap_RealEstateAccumulatedDepreciation_60ED30F77E2D5CD7B80132D2F109FB34" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAccumulatedDepreciation_60ED30F77E2D5CD7B80132D2F109FB34" xlink:to="lab_us-gaap_RealEstateAccumulatedDepreciation_60ED30F77E2D5CD7B80132D2F109FB34" xlink:type="arc" />
    <link:label id="lab_us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_F7B44205A159842F1B4E35550962F4B6_terseLabel_en-US" xlink:label="lab_us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_0CC36B21C21B5497AD910E23911BEF52" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additions during period</link:label>
    <link:label id="lab_us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_F7B44205A159842F1B4E35550962F4B6_label_en-US" xlink:label="lab_us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_0CC36B21C21B5497AD910E23911BEF52" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense" xlink:label="loc_us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_0CC36B21C21B5497AD910E23911BEF52" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_0CC36B21C21B5497AD910E23911BEF52" xlink:to="lab_us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_0CC36B21C21B5497AD910E23911BEF52" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_F293348906ECA9094E90355509624BB4_negatedLabel_en-US" xlink:label="lab_us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_1CBAB3EE7AB050CD956B1257987D2B50" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Dispositions during period</link:label>
    <link:label id="lab_us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_F293348906ECA9094E90355509624BB4_label_en-US" xlink:label="lab_us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_1CBAB3EE7AB050CD956B1257987D2B50" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciationRealEstateSold" xlink:label="loc_us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_1CBAB3EE7AB050CD956B1257987D2B50" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_1CBAB3EE7AB050CD956B1257987D2B50" xlink:to="lab_us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_1CBAB3EE7AB050CD956B1257987D2B50" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAccumulatedDepreciation_DEBDD8AD93B5E4265B8735550962E069_periodEndLabel_en-US" xlink:label="lab_us-gaap_RealEstateAccumulatedDepreciation_C357BC38F5B357B7B31CD1AE8BE8B5B2" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Balance, end of period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciation" xlink:label="loc_us-gaap_RealEstateAccumulatedDepreciation_C357BC38F5B357B7B31CD1AE8BE8B5B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAccumulatedDepreciation_C357BC38F5B357B7B31CD1AE8BE8B5B2" xlink:to="lab_us-gaap_RealEstateAccumulatedDepreciation_C357BC38F5B357B7B31CD1AE8BE8B5B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_EquityAbstract_1ED06420C1D70C50E8A8280790CE6B65_label_en-US" xlink:label="lab_us-gaap_EquityAbstract_1ED06420C1D70C50E8A8280790CE6B65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityAbstract" xlink:label="loc_us-gaap_EquityAbstract_1ED06420C1D70C50E8A8280790CE6B65" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityAbstract_1ED06420C1D70C50E8A8280790CE6B65" xlink:to="lab_us-gaap_EquityAbstract_1ED06420C1D70C50E8A8280790CE6B65" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfStockByClassTable_11EFD92B43FAB1F233F4280790CEAB37_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfStockByClassTable_11EFD92B43FAB1F233F4280790CEAB37" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Stock by Class [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfStockByClassTable_11EFD92B43FAB1F233F4280790CEAB37_label_en-US" xlink:label="lab_us-gaap_ScheduleOfStockByClassTable_11EFD92B43FAB1F233F4280790CEAB37" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Stock by Class [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfStockByClassTable" xlink:label="loc_us-gaap_ScheduleOfStockByClassTable_11EFD92B43FAB1F233F4280790CEAB37" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfStockByClassTable_11EFD92B43FAB1F233F4280790CEAB37" xlink:to="lab_us-gaap_ScheduleOfStockByClassTable_11EFD92B43FAB1F233F4280790CEAB37" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_22CA630AB438AC84EB60280790CE968A_terseLabel_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_22CA630AB438AC84EB60280790CE968A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementClassOfStockAxis_22CA630AB438AC84EB60280790CE968A_label_en-US" xlink:label="lab_us-gaap_StatementClassOfStockAxis_22CA630AB438AC84EB60280790CE968A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementClassOfStockAxis" xlink:label="loc_us-gaap_StatementClassOfStockAxis_22CA630AB438AC84EB60280790CE968A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementClassOfStockAxis_22CA630AB438AC84EB60280790CE968A" xlink:to="lab_us-gaap_StatementClassOfStockAxis_22CA630AB438AC84EB60280790CE968A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ClassOfStockDomain_9665B4071551FB5931ED280790CE107D_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_9665B4071551FB5931ED280790CE107D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Stock [Domain]</link:label>
    <link:label id="lab_us-gaap_ClassOfStockDomain_9665B4071551FB5931ED280790CE107D_label_en-US" xlink:label="lab_us-gaap_ClassOfStockDomain_9665B4071551FB5931ED280790CE107D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfStockDomain" xlink:label="loc_us-gaap_ClassOfStockDomain_9665B4071551FB5931ED280790CE107D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockDomain_9665B4071551FB5931ED280790CE107D" xlink:to="lab_us-gaap_ClassOfStockDomain_9665B4071551FB5931ED280790CE107D" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeriesAPreferredStockMember_7E5F1F674854F4FE4EC0280790CE9B2A_terseLabel_en-US" xlink:label="lab_us-gaap_SeriesAPreferredStockMember_7E5F1F674854F4FE4EC0280790CE9B2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Series A Preferred Stock</link:label>
    <link:label id="lab_us-gaap_SeriesAPreferredStockMember_7E5F1F674854F4FE4EC0280790CE9B2A_label_en-US" xlink:label="lab_us-gaap_SeriesAPreferredStockMember_7E5F1F674854F4FE4EC0280790CE9B2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Series A Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeriesAPreferredStockMember" xlink:label="loc_us-gaap_SeriesAPreferredStockMember_7E5F1F674854F4FE4EC0280790CE9B2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeriesAPreferredStockMember_7E5F1F674854F4FE4EC0280790CE9B2A" xlink:to="lab_us-gaap_SeriesAPreferredStockMember_7E5F1F674854F4FE4EC0280790CE9B2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_SeriesBPreferredStockMember_91F47431274C64266F24280790CE253D_terseLabel_en-US" xlink:label="lab_us-gaap_SeriesBPreferredStockMember_91F47431274C64266F24280790CE253D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Series B Preferred Stock</link:label>
    <link:label id="lab_us-gaap_SeriesBPreferredStockMember_91F47431274C64266F24280790CE253D_label_en-US" xlink:label="lab_us-gaap_SeriesBPreferredStockMember_91F47431274C64266F24280790CE253D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Series B Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SeriesBPreferredStockMember" xlink:label="loc_us-gaap_SeriesBPreferredStockMember_91F47431274C64266F24280790CE253D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SeriesBPreferredStockMember_91F47431274C64266F24280790CE253D" xlink:to="lab_us-gaap_SeriesBPreferredStockMember_91F47431274C64266F24280790CE253D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockMember_0DA6401508C52311993A280790CE50C0_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockMember_0DA6401508C52311993A280790CE50C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common Stock</link:label>
    <link:label id="lab_us-gaap_CommonStockMember_0DA6401508C52311993A280790CE50C0_label_en-US" xlink:label="lab_us-gaap_CommonStockMember_0DA6401508C52311993A280790CE50C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockMember" xlink:label="loc_us-gaap_CommonStockMember_0DA6401508C52311993A280790CE50C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockMember_0DA6401508C52311993A280790CE50C0" xlink:to="lab_us-gaap_CommonStockMember_0DA6401508C52311993A280790CE50C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ClassOfStockLineItems_A0960963FC6AA3ACC12A280790CE5C08_terseLabel_en-US" xlink:label="lab_us-gaap_ClassOfStockLineItems_A0960963FC6AA3ACC12A280790CE5C08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Class of Stock [Line Items]</link:label>
    <link:label id="lab_us-gaap_ClassOfStockLineItems_A0960963FC6AA3ACC12A280790CE5C08_label_en-US" xlink:label="lab_us-gaap_ClassOfStockLineItems_A0960963FC6AA3ACC12A280790CE5C08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Class of Stock [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ClassOfStockLineItems" xlink:label="loc_us-gaap_ClassOfStockLineItems_A0960963FC6AA3ACC12A280790CE5C08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ClassOfStockLineItems_A0960963FC6AA3ACC12A280790CE5C08" xlink:to="lab_us-gaap_ClassOfStockLineItems_A0960963FC6AA3ACC12A280790CE5C08" xlink:type="arc" />
    <link:label id="lab_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5_terseLabel_en-US" xlink:label="lab_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ordinary Income</link:label>
    <link:label id="lab_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5_label_en-US" xlink:label="lab_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ordinary Income As Percentage Of Distributions</link:label>
    <link:label id="lab_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5_documentation_en-US" xlink:label="lab_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ordinary income as percentage of distributions.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OrdinaryIncomeAsPercentageOfDistributions" xlink:label="loc_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5" xlink:to="lab_land_OrdinaryIncomeAsPercentageOfDistributions_485CF4D375B30A6B1ED8280790CEDAD5" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1_terseLabel_en-US" xlink:label="lab_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Return of Capital</link:label>
    <link:label id="lab_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1_label_en-US" xlink:label="lab_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Return Of Capital</link:label>
    <link:label id="lab_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1_documentation_en-US" xlink:label="lab_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of return of capital.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfReturnOfCapital" xlink:label="loc_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1" xlink:to="lab_land_PercentageOfReturnOfCapital_A55CC0573DB72ED79955280790CE3EA1" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC_terseLabel_en-US" xlink:label="lab_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Capital Gain</link:label>
    <link:label id="lab_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC_label_en-US" xlink:label="lab_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Long Term Capital Gain</link:label>
    <link:label id="lab_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC_documentation_en-US" xlink:label="lab_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of long term capital gain.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfLongTermCapitalGain" xlink:label="loc_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC" xlink:to="lab_land_PercentageOfLongTermCapitalGain_7D8CC33B6EA1A9B22352280790CE00FC" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_DF0D6419EFF1FB9F4F7320DF6C71738B_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_DF0D6419EFF1FB9F4F7320DF6C71738B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_DF0D6419EFF1FB9F4F7320DF6C71738B_label_en-US" xlink:label="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_DF0D6419EFF1FB9F4F7320DF6C71738B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfPropertyPlantAndEquipmentTable" xlink:label="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_DF0D6419EFF1FB9F4F7320DF6C71738B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_DF0D6419EFF1FB9F4F7320DF6C71738B" xlink:to="lab_us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_DF0D6419EFF1FB9F4F7320DF6C71738B" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_E798F1A4118302AD8B1220DF6C72FA07_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_E798F1A4118302AD8B1220DF6C72FA07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Line Items]</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentLineItems_E798F1A4118302AD8B1220DF6C72FA07_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentLineItems_E798F1A4118302AD8B1220DF6C72FA07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentLineItems" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E798F1A4118302AD8B1220DF6C72FA07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentLineItems_E798F1A4118302AD8B1220DF6C72FA07" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentLineItems_E798F1A4118302AD8B1220DF6C72FA07" xlink:type="arc" />
    <link:label id="lab_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939_terseLabel_en-US" xlink:label="lab_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary Information About Real Estate Properties</link:label>
    <link:label id="lab_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939_label_en-US" xlink:label="lab_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Summary Information About Real Estate Properties Table [Table Text Block]</link:label>
    <link:label id="lab_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939_documentation_en-US" xlink:label="lab_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Summary information about real estate properties.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock" xlink:label="loc_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939" xlink:to="lab_land_SummaryInformationAboutRealEstatePropertiesTableTableTextBlock_E53A9F789AAC4F66757D228C8D4C9939" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_91914681F7CED759A30120DF6C737985_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_91914681F7CED759A30120DF6C737985" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Components of Investments in Real Estate</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_91914681F7CED759A30120DF6C737985_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_91914681F7CED759A30120DF6C737985" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Real Estate Properties [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_91914681F7CED759A30120DF6C737985" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_91914681F7CED759A30120DF6C737985" xlink:to="lab_us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_91914681F7CED759A30120DF6C737985" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_6AFB7A4A122A2BA8FFFB20DF6C73B835_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_6AFB7A4A122A2BA8FFFB20DF6C73B835" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Carrying Value of Lease Intangibles and Accumulated Amortization for Each Intangible Asset or Liability Class</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_6AFB7A4A122A2BA8FFFB20DF6C73B835_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_6AFB7A4A122A2BA8FFFB20DF6C73B835" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_6AFB7A4A122A2BA8FFFB20DF6C73B835" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_6AFB7A4A122A2BA8FFFB20DF6C73B835" xlink:to="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTableTextBlock_6AFB7A4A122A2BA8FFFB20DF6C73B835" xlink:type="arc" />
    <link:label id="lab_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E_terseLabel_en-US" xlink:label="lab_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Estimated Aggregate Amortization Expense and Estimated Net Impact on Rental Income</link:label>
    <link:label id="lab_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E_label_en-US" xlink:label="lab_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Estimated Aggregate Amortization Expense And Estimated Net Impact On Rental Income [Table Text Block]</link:label>
    <link:label id="lab_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E_documentation_en-US" xlink:label="lab_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule Of Estimated Aggregate Amortization Expense And Estimated Net Impact On Rental Income [Table Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock" xlink:label="loc_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E" xlink:to="lab_land_ScheduleOfEstimatedAggregateAmortizationExpenseAndEstimatedNetImpactOnRentalIncomeTableTextBlock_458ABF358E2EBEDB336D20DF6C735A6E" xlink:type="arc" />
    <link:label id="lab_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4_terseLabel_en-US" xlink:label="lab_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fair Value of Acquired Assets and Liabilities Assumed Related to Properties Acquired</link:label>
    <link:label id="lab_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4_label_en-US" xlink:label="lab_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination Consideration Transferred [Table Text Block]</link:label>
    <link:label id="lab_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4_documentation_en-US" xlink:label="lab_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business combination consideration transferred.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BusinessCombinationConsiderationTransferredTableTextBlock" xlink:label="loc_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4" xlink:to="lab_land_BusinessCombinationConsiderationTransferredTableTextBlock_0CA7144F98EBD6C4F5EC20DF6C7371F4" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5BDCDF38FB0D26E1613C20DF6C73F017_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5BDCDF38FB0D26E1613C20DF6C73F017" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted Average Amortization Period for Intangible Assets Acquired and Liabilities Assumed</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5BDCDF38FB0D26E1613C20DF6C73F017_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5BDCDF38FB0D26E1613C20DF6C73F017" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Acquired Finite-Lived Intangible Assets by Major Class [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5BDCDF38FB0D26E1613C20DF6C73F017" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5BDCDF38FB0D26E1613C20DF6C73F017" xlink:to="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetsByMajorClassTextBlock_5BDCDF38FB0D26E1613C20DF6C73F017" xlink:type="arc" />
    <link:label id="lab_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119_terseLabel_en-US" xlink:label="lab_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating Leases of Lessor, Leasing Activity</link:label>
    <link:label id="lab_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119_label_en-US" xlink:label="lab_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases of Lessor, Leasing Activity [Table Text Block]</link:label>
    <link:label id="lab_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119_documentation_en-US" xlink:label="lab_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Leases of Lessor, Leasing Activity [Table Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OperatingLeasesofLessorLeasingActivityTableTextBlock" xlink:label="loc_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119" xlink:to="lab_land_OperatingLeasesofLessorLeasingActivityTableTextBlock_8601066A7216EE77266B20DF6C744119" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_24F8DF848A60D70F2D0220DF6C747813_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_24F8DF848A60D70F2D0220DF6C747813" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Future Operating Lease Payments from Tenants under Non-Cancelable Leases</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_24F8DF848A60D70F2D0220DF6C747813_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_24F8DF848A60D70F2D0220DF6C747813" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessee, Operating Lease, Disclosure [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock" xlink:label="loc_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_24F8DF848A60D70F2D0220DF6C747813" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_24F8DF848A60D70F2D0220DF6C747813" xlink:to="lab_us-gaap_OperatingLeasesOfLesseeDisclosureTextBlock_24F8DF848A60D70F2D0220DF6C747813" xlink:type="arc" />
    <link:label id="lab_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08_terseLabel_en-US" xlink:label="lab_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Geographic Locations of Properties</link:label>
    <link:label id="lab_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08_label_en-US" xlink:label="lab_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Summary Of Geographic Locations Of Real Estate Properties Table [Table Text Block]</link:label>
    <link:label id="lab_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08_documentation_en-US" xlink:label="lab_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Summary of geographic locations of real estate properties.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock" xlink:label="loc_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08" xlink:to="lab_land_SummaryOfGeographicLocationsOfRealEstatePropertiesTableTableTextBlock_B7BAA8F0099B9698F1D820DF6C749A08" xlink:type="arc" />
    <link:label id="lab_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF_terseLabel_en-US" xlink:label="lab_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Taft Highway</link:label>
    <link:label id="lab_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF_label_en-US" xlink:label="lab_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Taft Highway [Member]</link:label>
    <link:label id="lab_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF_documentation_en-US" xlink:label="lab_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Taft Highway [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TaftHighwayMember" xlink:label="loc_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF" xlink:to="lab_land_TaftHighwayMember_7EDDB5CA4080C4E8D44726D13944A8CF" xlink:type="arc" />
    <link:label id="lab_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5_terseLabel_en-US" xlink:label="lab_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cemetery Road</link:label>
    <link:label id="lab_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5_label_en-US" xlink:label="lab_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cemetery Road [Member]</link:label>
    <link:label id="lab_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5_documentation_en-US" xlink:label="lab_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cemetery Road [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CemeteryRoadMember" xlink:label="loc_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5" xlink:to="lab_land_CemeteryRoadMember_45631F2E6C37EB08B99C26D13945B0E5" xlink:type="arc" />
    <link:label id="lab_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290_terseLabel_en-US" xlink:label="lab_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plantation Road</link:label>
    <link:label id="lab_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290_label_en-US" xlink:label="lab_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plantation Road [Member]</link:label>
    <link:label id="lab_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290_documentation_en-US" xlink:label="lab_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plantation Road [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PlantationRoadMember" xlink:label="loc_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290" xlink:to="lab_land_PlantationRoadMember_DA4D32D2583CC3F2643F26D13945F290" xlink:type="arc" />
    <link:label id="lab_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4_terseLabel_en-US" xlink:label="lab_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Flint Avenue</link:label>
    <link:label id="lab_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4_label_en-US" xlink:label="lab_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Flint Avenue [Member]</link:label>
    <link:label id="lab_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4_documentation_en-US" xlink:label="lab_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Flint Avenue [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FlintAvenueMember" xlink:label="loc_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4" xlink:to="lab_land_FlintAvenueMember_B6CF5D4652C05FA3401C26D13945E5A4" xlink:type="arc" />
    <link:label id="lab_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E_terseLabel_en-US" xlink:label="lab_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sunnyside Avenue</link:label>
    <link:label id="lab_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E_label_en-US" xlink:label="lab_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sunnyside Avenue [Member]</link:label>
    <link:label id="lab_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E_documentation_en-US" xlink:label="lab_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sunnyside Avenue [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SunnysideAvenueMember" xlink:label="loc_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E" xlink:to="lab_land_SunnysideAvenueMember_DDB330290FFD9E0A605226D13946850E" xlink:type="arc" />
    <link:label id="lab_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B_terseLabel_en-US" xlink:label="lab_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bunker Hill</link:label>
    <link:label id="lab_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B_label_en-US" xlink:label="lab_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bunker Hill [Member]</link:label>
    <link:label id="lab_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B_documentation_en-US" xlink:label="lab_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bunker Hill [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BunkerHillMember" xlink:label="loc_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B" xlink:to="lab_land_BunkerHillMember_3C90DFAA25E0F3CCEBEC26D13946220B" xlink:type="arc" />
    <link:label id="lab_land_OlsenRoadMember_5C96606621278F79C23A26D139462503_terseLabel_en-US" xlink:label="lab_land_OlsenRoadMember_5C96606621278F79C23A26D139462503" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Olsen Road</link:label>
    <link:label id="lab_land_OlsenRoadMember_5C96606621278F79C23A26D139462503_label_en-US" xlink:label="lab_land_OlsenRoadMember_5C96606621278F79C23A26D139462503" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Olsen Road [Member]</link:label>
    <link:label id="lab_land_OlsenRoadMember_5C96606621278F79C23A26D139462503_documentation_en-US" xlink:label="lab_land_OlsenRoadMember_5C96606621278F79C23A26D139462503" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Olsen Road [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OlsenRoadMember" xlink:label="loc_land_OlsenRoadMember_5C96606621278F79C23A26D139462503" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OlsenRoadMember_5C96606621278F79C23A26D139462503" xlink:to="lab_land_OlsenRoadMember_5C96606621278F79C23A26D139462503" xlink:type="arc" />
    <link:label id="lab_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988_terseLabel_en-US" xlink:label="lab_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Kern, CA</link:label>
    <link:label id="lab_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988_label_en-US" xlink:label="lab_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Kern County California [Member]</link:label>
    <link:label id="lab_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988_documentation_en-US" xlink:label="lab_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Kern County California [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_KernCountyCaliforniaMember" xlink:label="loc_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988" xlink:to="lab_land_KernCountyCaliforniaMember_FA3428615BDE55C377FC26D139486988" xlink:type="arc" />
    <link:label id="lab_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869_terseLabel_en-US" xlink:label="lab_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Van Buren, MI</link:label>
    <link:label id="lab_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869_label_en-US" xlink:label="lab_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Van Buren, Michigan [Member]</link:label>
    <link:label id="lab_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869_documentation_en-US" xlink:label="lab_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Van Buren, Michigan [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_VanBurenMichiganMember" xlink:label="loc_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869" xlink:to="lab_land_VanBurenMichiganMember_E4D98E2D0024756E11CC26D13948A869" xlink:type="arc" />
    <link:label id="lab_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70_terseLabel_en-US" xlink:label="lab_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Jackson, FL</link:label>
    <link:label id="lab_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70_label_en-US" xlink:label="lab_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Jackson County Florida [Member]</link:label>
    <link:label id="lab_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70_documentation_en-US" xlink:label="lab_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Jackson County Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_JacksonCountyFloridaMember" xlink:label="loc_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70" xlink:to="lab_land_JacksonCountyFloridaMember_4371BB433DA2F2749A7826D139497A70" xlink:type="arc" />
    <link:label id="lab_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F_terseLabel_en-US" xlink:label="lab_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Kings, CA</link:label>
    <link:label id="lab_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F_label_en-US" xlink:label="lab_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Kings County California [Member]</link:label>
    <link:label id="lab_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F_documentation_en-US" xlink:label="lab_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Kings County California [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_KingsCountyCaliforniaMember" xlink:label="loc_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F" xlink:to="lab_land_KingsCountyCaliforniaMember_08544FC2AD1A78B7694126D13949652F" xlink:type="arc" />
    <link:label id="lab_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2_terseLabel_en-US" xlink:label="lab_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Madera, CA</link:label>
    <link:label id="lab_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2_label_en-US" xlink:label="lab_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Madera California [Member]</link:label>
    <link:label id="lab_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2_documentation_en-US" xlink:label="lab_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Madera California [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MaderaCaliforniaMember" xlink:label="loc_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2" xlink:to="lab_land_MaderaCaliforniaMember_AD071429EA636810D94A26D1394978B2" xlink:type="arc" />
    <link:label id="lab_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C_terseLabel_en-US" xlink:label="lab_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hartley, TX</link:label>
    <link:label id="lab_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C_label_en-US" xlink:label="lab_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hartley Texas [Member]</link:label>
    <link:label id="lab_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C_documentation_en-US" xlink:label="lab_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Hartley Texas [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HartleyTexasMember" xlink:label="loc_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C" xlink:to="lab_land_HartleyTexasMember_C616F90CB9B999CBD29626D13949F84C" xlink:type="arc" />
    <link:label id="lab_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C_terseLabel_en-US" xlink:label="lab_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Merced, CA</link:label>
    <link:label id="lab_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C_label_en-US" xlink:label="lab_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Merced, CA [Member]</link:label>
    <link:label id="lab_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C_documentation_en-US" xlink:label="lab_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Merced, CA</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MercedCAMember" xlink:label="loc_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C" xlink:to="lab_land_MercedCAMember_35F0671E76AC6EC2140C26D1394A529C" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1FB91DB585D117F7189C26D1394B5D32_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1FB91DB585D117F7189C26D1394B5D32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1FB91DB585D117F7189C26D1394B5D32_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1FB91DB585D117F7189C26D1394B5D32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1FB91DB585D117F7189C26D1394B5D32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1FB91DB585D117F7189C26D1394B5D32" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_1FB91DB585D117F7189C26D1394B5D32" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_675F95F1C3EFD94041BF26D1394C103C_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_675F95F1C3EFD94041BF26D1394C103C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_675F95F1C3EFD94041BF26D1394C103C_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_675F95F1C3EFD94041BF26D1394C103C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_675F95F1C3EFD94041BF26D1394C103C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_675F95F1C3EFD94041BF26D1394C103C" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_675F95F1C3EFD94041BF26D1394C103C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseAgreementsMember_1D775D094DB444642B1426D1394D5834_terseLabel_en-US" xlink:label="lab_us-gaap_LeaseAgreementsMember_1D775D094DB444642B1426D1394D5834" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leasehold interest &#8211; land</link:label>
    <link:label id="lab_us-gaap_LeaseAgreementsMember_1D775D094DB444642B1426D1394D5834_label_en-US" xlink:label="lab_us-gaap_LeaseAgreementsMember_1D775D094DB444642B1426D1394D5834" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Agreements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseAgreementsMember" xlink:label="loc_us-gaap_LeaseAgreementsMember_1D775D094DB444642B1426D1394D5834" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseAgreementsMember_1D775D094DB444642B1426D1394D5834" xlink:to="lab_us-gaap_LeaseAgreementsMember_1D775D094DB444642B1426D1394D5834" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B295C57CEB7482F0F9C126D1394E5734_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B295C57CEB7482F0F9C126D1394E5734" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquisition Date</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1" xlink:label="loc_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B295C57CEB7482F0F9C126D1394E5734" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B295C57CEB7482F0F9C126D1394E5734" xlink:to="lab_us-gaap_BusinessAcquisitionEffectiveDateOfAcquisition1_B295C57CEB7482F0F9C126D1394E5734" xlink:type="arc" />
    <link:label id="lab_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2_terseLabel_en-US" xlink:label="lab_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit provided by seller</link:label>
    <link:label id="lab_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2_label_en-US" xlink:label="lab_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Consideration Transferred, Credit Provided by Seller</link:label>
    <link:label id="lab_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2_documentation_en-US" xlink:label="lab_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Business Combination, Consideration Transferred, Credit Provided by Seller</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller" xlink:label="loc_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2" xlink:to="lab_land_BusinessCombinationConsiderationTransferredCreditProvidedbySeller_5A4A597607DA24F6F51427237B2E99F2" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromLeasePayments_E33B087B442445C4F12C271FBCEB857C_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLeasePayments_E33B087B442445C4F12C271FBCEB857C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Initial rent payment received</link:label>
    <link:label id="lab_us-gaap_ProceedsFromLeasePayments_E33B087B442445C4F12C271FBCEB857C_label_en-US" xlink:label="lab_us-gaap_ProceedsFromLeasePayments_E33B087B442445C4F12C271FBCEB857C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Lease Payments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromLeasePayments" xlink:label="loc_us-gaap_ProceedsFromLeasePayments_E33B087B442445C4F12C271FBCEB857C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromLeasePayments_E33B087B442445C4F12C271FBCEB857C" xlink:to="lab_us-gaap_ProceedsFromLeasePayments_E33B087B442445C4F12C271FBCEB857C" xlink:type="arc" />
    <link:label id="lab_land_RealEstatePropertiesEarningsRecognized_383D081E506060C98FC026D139516D9B_verboseLabel_en-US" xlink:label="lab_land_RealEstatePropertiesEarningsRecognized_383D081E506060C98FC026D139516D9B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Real estate properties earnings recognized</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstatePropertiesEarningsRecognized" xlink:label="loc_land_RealEstatePropertiesEarningsRecognized_383D081E506060C98FC026D139516D9B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstatePropertiesEarningsRecognized_383D081E506060C98FC026D139516D9B" xlink:to="lab_land_RealEstatePropertiesEarningsRecognized_383D081E506060C98FC026D139516D9B" xlink:type="arc" />
    <link:label id="lab_land_DocumentAndEntityInformationAbstract_0B101CCA6576941E5D242B77F07234E9_label_en-US" xlink:label="lab_land_DocumentAndEntityInformationAbstract_0B101CCA6576941E5D242B77F07234E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document And Entity Information [Abstract]</link:label>
    <link:label id="lab_land_DocumentAndEntityInformationAbstract_0B101CCA6576941E5D242B77F07234E9_documentation_en-US" xlink:label="lab_land_DocumentAndEntityInformationAbstract_0B101CCA6576941E5D242B77F07234E9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Document and entity information.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DocumentAndEntityInformationAbstract" xlink:label="loc_land_DocumentAndEntityInformationAbstract_0B101CCA6576941E5D242B77F07234E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DocumentAndEntityInformationAbstract_0B101CCA6576941E5D242B77F07234E9" xlink:to="lab_land_DocumentAndEntityInformationAbstract_0B101CCA6576941E5D242B77F07234E9" xlink:type="arc" />
    <link:label id="lab_dei_DocumentType_71AA4F490817ADCDF94B2B77F0755444_terseLabel_en-US" xlink:label="lab_dei_DocumentType_71AA4F490817ADCDF94B2B77F0755444" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:label id="lab_dei_DocumentType_71AA4F490817ADCDF94B2B77F0755444_label_en-US" xlink:label="lab_dei_DocumentType_71AA4F490817ADCDF94B2B77F0755444" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Type</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentType" xlink:label="loc_dei_DocumentType_71AA4F490817ADCDF94B2B77F0755444" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentType_71AA4F490817ADCDF94B2B77F0755444" xlink:to="lab_dei_DocumentType_71AA4F490817ADCDF94B2B77F0755444" xlink:type="arc" />
    <link:label id="lab_dei_AmendmentFlag_8AA3BE76E41C611B57F82B77F077A25A_terseLabel_en-US" xlink:label="lab_dei_AmendmentFlag_8AA3BE76E41C611B57F82B77F077A25A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:label id="lab_dei_AmendmentFlag_8AA3BE76E41C611B57F82B77F077A25A_label_en-US" xlink:label="lab_dei_AmendmentFlag_8AA3BE76E41C611B57F82B77F077A25A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amendment Flag</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_AmendmentFlag" xlink:label="loc_dei_AmendmentFlag_8AA3BE76E41C611B57F82B77F077A25A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_AmendmentFlag_8AA3BE76E41C611B57F82B77F077A25A" xlink:to="lab_dei_AmendmentFlag_8AA3BE76E41C611B57F82B77F077A25A" xlink:type="arc" />
    <link:label id="lab_dei_DocumentPeriodEndDate_5C134FE0526148521E4D2B77F07875FE_terseLabel_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_5C134FE0526148521E4D2B77F07875FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:label id="lab_dei_DocumentPeriodEndDate_5C134FE0526148521E4D2B77F07875FE_label_en-US" xlink:label="lab_dei_DocumentPeriodEndDate_5C134FE0526148521E4D2B77F07875FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Period End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentPeriodEndDate" xlink:label="loc_dei_DocumentPeriodEndDate_5C134FE0526148521E4D2B77F07875FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentPeriodEndDate_5C134FE0526148521E4D2B77F07875FE" xlink:to="lab_dei_DocumentPeriodEndDate_5C134FE0526148521E4D2B77F07875FE" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalYearFocus_6AE473CD1BF59B2E694A2B77F078F465_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_6AE473CD1BF59B2E694A2B77F078F465" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalYearFocus_6AE473CD1BF59B2E694A2B77F078F465_label_en-US" xlink:label="lab_dei_DocumentFiscalYearFocus_6AE473CD1BF59B2E694A2B77F078F465" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Year Focus</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalYearFocus" xlink:label="loc_dei_DocumentFiscalYearFocus_6AE473CD1BF59B2E694A2B77F078F465" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalYearFocus_6AE473CD1BF59B2E694A2B77F078F465" xlink:to="lab_dei_DocumentFiscalYearFocus_6AE473CD1BF59B2E694A2B77F078F465" xlink:type="arc" />
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_17B2CC5BC82AB9C0F23E2B77F0787A06_terseLabel_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_17B2CC5BC82AB9C0F23E2B77F0787A06" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:label id="lab_dei_DocumentFiscalPeriodFocus_17B2CC5BC82AB9C0F23E2B77F0787A06_label_en-US" xlink:label="lab_dei_DocumentFiscalPeriodFocus_17B2CC5BC82AB9C0F23E2B77F0787A06" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Document Fiscal Period Focus</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_DocumentFiscalPeriodFocus" xlink:label="loc_dei_DocumentFiscalPeriodFocus_17B2CC5BC82AB9C0F23E2B77F0787A06" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_DocumentFiscalPeriodFocus_17B2CC5BC82AB9C0F23E2B77F0787A06" xlink:to="lab_dei_DocumentFiscalPeriodFocus_17B2CC5BC82AB9C0F23E2B77F0787A06" xlink:type="arc" />
    <link:label id="lab_dei_TradingSymbol_52458F0E241FB739D3052B77F078BE08_terseLabel_en-US" xlink:label="lab_dei_TradingSymbol_52458F0E241FB739D3052B77F078BE08" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
    <link:label id="lab_dei_TradingSymbol_52458F0E241FB739D3052B77F078BE08_label_en-US" xlink:label="lab_dei_TradingSymbol_52458F0E241FB739D3052B77F078BE08" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Trading Symbol</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_TradingSymbol" xlink:label="loc_dei_TradingSymbol_52458F0E241FB739D3052B77F078BE08" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_TradingSymbol_52458F0E241FB739D3052B77F078BE08" xlink:to="lab_dei_TradingSymbol_52458F0E241FB739D3052B77F078BE08" xlink:type="arc" />
    <link:label id="lab_dei_EntityRegistrantName_88149A01A700935EA8052B77F078D626_terseLabel_en-US" xlink:label="lab_dei_EntityRegistrantName_88149A01A700935EA8052B77F078D626" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:label id="lab_dei_EntityRegistrantName_88149A01A700935EA8052B77F078D626_label_en-US" xlink:label="lab_dei_EntityRegistrantName_88149A01A700935EA8052B77F078D626" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Registrant Name</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityRegistrantName" xlink:label="loc_dei_EntityRegistrantName_88149A01A700935EA8052B77F078D626" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityRegistrantName_88149A01A700935EA8052B77F078D626" xlink:to="lab_dei_EntityRegistrantName_88149A01A700935EA8052B77F078D626" xlink:type="arc" />
    <link:label id="lab_dei_EntityCentralIndexKey_C15413D7166106963F5A2B77F078050F_terseLabel_en-US" xlink:label="lab_dei_EntityCentralIndexKey_C15413D7166106963F5A2B77F078050F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:label id="lab_dei_EntityCentralIndexKey_C15413D7166106963F5A2B77F078050F_label_en-US" xlink:label="lab_dei_EntityCentralIndexKey_C15413D7166106963F5A2B77F078050F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Central Index Key</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCentralIndexKey" xlink:label="loc_dei_EntityCentralIndexKey_C15413D7166106963F5A2B77F078050F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCentralIndexKey_C15413D7166106963F5A2B77F078050F" xlink:to="lab_dei_EntityCentralIndexKey_C15413D7166106963F5A2B77F078050F" xlink:type="arc" />
    <link:label id="lab_dei_CurrentFiscalYearEndDate_DECE498BC1CB56DDE04C2B77F079B061_terseLabel_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_DECE498BC1CB56DDE04C2B77F079B061" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:label id="lab_dei_CurrentFiscalYearEndDate_DECE498BC1CB56DDE04C2B77F079B061_label_en-US" xlink:label="lab_dei_CurrentFiscalYearEndDate_DECE498BC1CB56DDE04C2B77F079B061" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Fiscal Year End Date</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_CurrentFiscalYearEndDate" xlink:label="loc_dei_CurrentFiscalYearEndDate_DECE498BC1CB56DDE04C2B77F079B061" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_CurrentFiscalYearEndDate_DECE498BC1CB56DDE04C2B77F079B061" xlink:to="lab_dei_CurrentFiscalYearEndDate_DECE498BC1CB56DDE04C2B77F079B061" xlink:type="arc" />
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_94C4C9A2C2DE8B87D4BF2B77F0794AA3_terseLabel_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_94C4C9A2C2DE8B87D4BF2B77F0794AA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:label id="lab_dei_EntityWellKnownSeasonedIssuer_94C4C9A2C2DE8B87D4BF2B77F0794AA3_label_en-US" xlink:label="lab_dei_EntityWellKnownSeasonedIssuer_94C4C9A2C2DE8B87D4BF2B77F0794AA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Well-known Seasoned Issuer</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityWellKnownSeasonedIssuer" xlink:label="loc_dei_EntityWellKnownSeasonedIssuer_94C4C9A2C2DE8B87D4BF2B77F0794AA3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityWellKnownSeasonedIssuer_94C4C9A2C2DE8B87D4BF2B77F0794AA3" xlink:to="lab_dei_EntityWellKnownSeasonedIssuer_94C4C9A2C2DE8B87D4BF2B77F0794AA3" xlink:type="arc" />
    <link:label id="lab_dei_EntityCurrentReportingStatus_3E8F1DFC1C4FEE4FFBC42B77F07984B0_terseLabel_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_3E8F1DFC1C4FEE4FFBC42B77F07984B0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:label id="lab_dei_EntityCurrentReportingStatus_3E8F1DFC1C4FEE4FFBC42B77F07984B0_label_en-US" xlink:label="lab_dei_EntityCurrentReportingStatus_3E8F1DFC1C4FEE4FFBC42B77F07984B0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Current Reporting Status</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCurrentReportingStatus" xlink:label="loc_dei_EntityCurrentReportingStatus_3E8F1DFC1C4FEE4FFBC42B77F07984B0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCurrentReportingStatus_3E8F1DFC1C4FEE4FFBC42B77F07984B0" xlink:to="lab_dei_EntityCurrentReportingStatus_3E8F1DFC1C4FEE4FFBC42B77F07984B0" xlink:type="arc" />
    <link:label id="lab_dei_EntityVoluntaryFilers_6626752C06AB6F5F0FEE2B77F0798C32_terseLabel_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_6626752C06AB6F5F0FEE2B77F0798C32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:label id="lab_dei_EntityVoluntaryFilers_6626752C06AB6F5F0FEE2B77F0798C32_label_en-US" xlink:label="lab_dei_EntityVoluntaryFilers_6626752C06AB6F5F0FEE2B77F0798C32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Voluntary Filers</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityVoluntaryFilers" xlink:label="loc_dei_EntityVoluntaryFilers_6626752C06AB6F5F0FEE2B77F0798C32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityVoluntaryFilers_6626752C06AB6F5F0FEE2B77F0798C32" xlink:to="lab_dei_EntityVoluntaryFilers_6626752C06AB6F5F0FEE2B77F0798C32" xlink:type="arc" />
    <link:label id="lab_dei_EntityFilerCategory_126F195C88B3B185EE312B77F0794652_terseLabel_en-US" xlink:label="lab_dei_EntityFilerCategory_126F195C88B3B185EE312B77F0794652" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:label id="lab_dei_EntityFilerCategory_126F195C88B3B185EE312B77F0794652_label_en-US" xlink:label="lab_dei_EntityFilerCategory_126F195C88B3B185EE312B77F0794652" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Filer Category</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityFilerCategory" xlink:label="loc_dei_EntityFilerCategory_126F195C88B3B185EE312B77F0794652" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityFilerCategory_126F195C88B3B185EE312B77F0794652" xlink:to="lab_dei_EntityFilerCategory_126F195C88B3B185EE312B77F0794652" xlink:type="arc" />
    <link:label id="lab_dei_EntitySmallBusiness_E38501C81F262F54630B2B77F07ABB44_terseLabel_en-US" xlink:label="lab_dei_EntitySmallBusiness_E38501C81F262F54630B2B77F07ABB44" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Small Business</link:label>
    <link:label id="lab_dei_EntitySmallBusiness_E38501C81F262F54630B2B77F07ABB44_label_en-US" xlink:label="lab_dei_EntitySmallBusiness_E38501C81F262F54630B2B77F07ABB44" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Small Business</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntitySmallBusiness" xlink:label="loc_dei_EntitySmallBusiness_E38501C81F262F54630B2B77F07ABB44" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntitySmallBusiness_E38501C81F262F54630B2B77F07ABB44" xlink:to="lab_dei_EntitySmallBusiness_E38501C81F262F54630B2B77F07ABB44" xlink:type="arc" />
    <link:label id="lab_dei_EntityEmergingGrowthCompany_883DB04DE9DB32B855D32B77F07AA89A_terseLabel_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_883DB04DE9DB32B855D32B77F07AA89A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:label id="lab_dei_EntityEmergingGrowthCompany_883DB04DE9DB32B855D32B77F07AA89A_label_en-US" xlink:label="lab_dei_EntityEmergingGrowthCompany_883DB04DE9DB32B855D32B77F07AA89A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Emerging Growth Company</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityEmergingGrowthCompany" xlink:label="loc_dei_EntityEmergingGrowthCompany_883DB04DE9DB32B855D32B77F07AA89A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityEmergingGrowthCompany_883DB04DE9DB32B855D32B77F07AA89A" xlink:to="lab_dei_EntityEmergingGrowthCompany_883DB04DE9DB32B855D32B77F07AA89A" xlink:type="arc" />
    <link:label id="lab_dei_EntityShellCompany_3180EBC612C5A99687A22B790CC87939_terseLabel_en-US" xlink:label="lab_dei_EntityShellCompany_3180EBC612C5A99687A22B790CC87939" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Shell Company</link:label>
    <link:label id="lab_dei_EntityShellCompany_3180EBC612C5A99687A22B790CC87939_label_en-US" xlink:label="lab_dei_EntityShellCompany_3180EBC612C5A99687A22B790CC87939" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Shell Company</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityShellCompany" xlink:label="loc_dei_EntityShellCompany_3180EBC612C5A99687A22B790CC87939" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityShellCompany_3180EBC612C5A99687A22B790CC87939" xlink:to="lab_dei_EntityShellCompany_3180EBC612C5A99687A22B790CC87939" xlink:type="arc" />
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_7580D459DF8E3A7AF19A2B77F07A1350_terseLabel_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_7580D459DF8E3A7AF19A2B77F07A1350" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding (in shares)</link:label>
    <link:label id="lab_dei_EntityCommonStockSharesOutstanding_7580D459DF8E3A7AF19A2B77F07A1350_label_en-US" xlink:label="lab_dei_EntityCommonStockSharesOutstanding_7580D459DF8E3A7AF19A2B77F07A1350" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Common Stock, Shares Outstanding</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityCommonStockSharesOutstanding" xlink:label="loc_dei_EntityCommonStockSharesOutstanding_7580D459DF8E3A7AF19A2B77F07A1350" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityCommonStockSharesOutstanding_7580D459DF8E3A7AF19A2B77F07A1350" xlink:to="lab_dei_EntityCommonStockSharesOutstanding_7580D459DF8E3A7AF19A2B77F07A1350" xlink:type="arc" />
    <link:label id="lab_dei_EntityPublicFloat_0D0B2EB654BBDEB7D8652B77F07AA983_terseLabel_en-US" xlink:label="lab_dei_EntityPublicFloat_0D0B2EB654BBDEB7D8652B77F07AA983" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity Public Float</link:label>
    <link:label id="lab_dei_EntityPublicFloat_0D0B2EB654BBDEB7D8652B77F07AA983_label_en-US" xlink:label="lab_dei_EntityPublicFloat_0D0B2EB654BBDEB7D8652B77F07AA983" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Public Float</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityPublicFloat" xlink:label="loc_dei_EntityPublicFloat_0D0B2EB654BBDEB7D8652B77F07AA983" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityPublicFloat_0D0B2EB654BBDEB7D8652B77F07AA983" xlink:to="lab_dei_EntityPublicFloat_0D0B2EB654BBDEB7D8652B77F07AA983" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockDividendsPerShareCashPaid_C2B2FCCCBFD6AFD4344615B366B5E2FF_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsPerShareCashPaid_C2B2FCCCBFD6AFD4344615B366B5E2FF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributions per Preferred Share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_PreferredStockDividendsPerShareCashPaid_C2B2FCCCBFD6AFD4344615B366B5E2FF_label_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsPerShareCashPaid_C2B2FCCCBFD6AFD4344615B366B5E2FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Dividends, Per Share, Cash Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockDividendsPerShareCashPaid" xlink:label="loc_us-gaap_PreferredStockDividendsPerShareCashPaid_C2B2FCCCBFD6AFD4344615B366B5E2FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockDividendsPerShareCashPaid_C2B2FCCCBFD6AFD4344615B366B5E2FF" xlink:to="lab_us-gaap_PreferredStockDividendsPerShareCashPaid_C2B2FCCCBFD6AFD4344615B366B5E2FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4ED5321154ADFD66876115B1E3CE578B_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4ED5321154ADFD66876115B1E3CE578B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributions per Common Share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4ED5321154ADFD66876115B1E3CE578B_label_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4ED5321154ADFD66876115B1E3CE578B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Dividends, Per Share, Cash Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockDividendsPerShareCashPaid" xlink:label="loc_us-gaap_CommonStockDividendsPerShareCashPaid_4ED5321154ADFD66876115B1E3CE578B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockDividendsPerShareCashPaid_4ED5321154ADFD66876115B1E3CE578B" xlink:to="lab_us-gaap_CommonStockDividendsPerShareCashPaid_4ED5321154ADFD66876115B1E3CE578B" xlink:type="arc" />
    <link:label id="lab_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D_terseLabel_en-US" xlink:label="lab_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term mortgage notes and bonds payable</link:label>
    <link:label id="lab_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D_label_en-US" xlink:label="lab_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Mortgage Notes And Bonds Payable [Member]</link:label>
    <link:label id="lab_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D_documentation_en-US" xlink:label="lab_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long term mortgage notes and bonds payable.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LongTermMortgageNotesAndBondsPayableMember" xlink:label="loc_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D" xlink:to="lab_land_LongTermMortgageNotesAndBondsPayableMember_D9B9F219A56E4CB048712B7886F0BC1D" xlink:type="arc" />
    <link:label id="lab_stpr_NE_1B51E06C4F77C624BC472B7886F0456E_terseLabel_en-US" xlink:label="lab_stpr_NE_1B51E06C4F77C624BC472B7886F0456E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Nebraska</link:label>
    <link:label id="lab_stpr_NE_1B51E06C4F77C624BC472B7886F0456E_label_en-US" xlink:label="lab_stpr_NE_1B51E06C4F77C624BC472B7886F0456E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">NEBRASKA</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_NE" xlink:label="loc_stpr_NE_1B51E06C4F77C624BC472B7886F0456E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_NE_1B51E06C4F77C624BC472B7886F0456E" xlink:to="lab_stpr_NE_1B51E06C4F77C624BC472B7886F0456E" xlink:type="arc" />
    <link:label id="lab_stpr_WA_48C05731D38A27BFDF752B7886F02E5F_terseLabel_en-US" xlink:label="lab_stpr_WA_48C05731D38A27BFDF752B7886F02E5F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Washington</link:label>
    <link:label id="lab_stpr_WA_48C05731D38A27BFDF752B7886F02E5F_label_en-US" xlink:label="lab_stpr_WA_48C05731D38A27BFDF752B7886F02E5F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">WASHINGTON</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_WA" xlink:label="loc_stpr_WA_48C05731D38A27BFDF752B7886F02E5F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_WA_48C05731D38A27BFDF752B7886F02E5F" xlink:to="lab_stpr_WA_48C05731D38A27BFDF752B7886F02E5F" xlink:type="arc" />
    <link:label id="lab_stpr_TX_7C65F2C58223F483E8462B7886F0B612_terseLabel_en-US" xlink:label="lab_stpr_TX_7C65F2C58223F483E8462B7886F0B612" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Oregon</link:label>
    <link:label id="lab_stpr_TX_7C65F2C58223F483E8462B7886F0B612_label_en-US" xlink:label="lab_stpr_TX_7C65F2C58223F483E8462B7886F0B612" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">TEXAS</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_TX" xlink:label="loc_stpr_TX_7C65F2C58223F483E8462B7886F0B612" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_TX_7C65F2C58223F483E8462B7886F0B612" xlink:to="lab_stpr_TX_7C65F2C58223F483E8462B7886F0B612" xlink:type="arc" />
    <link:label id="lab_stpr_MI_D768CC32E71B8821676C2B7886F04910_terseLabel_en-US" xlink:label="lab_stpr_MI_D768CC32E71B8821676C2B7886F04910" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Michigan</link:label>
    <link:label id="lab_stpr_MI_D768CC32E71B8821676C2B7886F04910_label_en-US" xlink:label="lab_stpr_MI_D768CC32E71B8821676C2B7886F04910" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MICHIGAN</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_MI" xlink:label="loc_stpr_MI_D768CC32E71B8821676C2B7886F04910" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_MI_D768CC32E71B8821676C2B7886F04910" xlink:to="lab_stpr_MI_D768CC32E71B8821676C2B7886F04910" xlink:type="arc" />
    <link:label id="lab_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27_terseLabel_en-US" xlink:label="lab_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Acres</link:label>
    <link:label id="lab_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27_label_en-US" xlink:label="lab_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farmable Area Of Land</link:label>
    <link:label id="lab_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27_documentation_en-US" xlink:label="lab_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farmable area of land.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmableAreaOfLand" xlink:label="loc_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27" xlink:to="lab_land_FarmableAreaOfLand_5A5C43F769F10DD4CB632B7886F08C27" xlink:type="arc" />
    <link:label id="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69_terseLabel_en-US" xlink:label="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Cost Basis</link:label>
    <link:label id="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69_label_en-US" xlink:label="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule III, Real Estate Investment Property Including Intangible Assets, Net</link:label>
    <link:label id="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69_documentation_en-US" xlink:label="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount after accumulated depreciation of real estate and intangible assets held for investment for entities with a substantial portion of business acquiring and holding investment real estate.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet" xlink:label="loc_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69" xlink:to="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_152533EFD12B532763152B7886F0FE69" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_E2C748B876672A2860E42B7886F033AB_terseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_E2C748B876672A2860E42B7886F033AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Encumbrances</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_E2C748B876672A2860E42B7886F033AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_E2C748B876672A2860E42B7886F033AB" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_E2C748B876672A2860E42B7886F033AB" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredFinanceCostsNet_885E6A08D62314BF52DC2B7886F00B14_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNet_885E6A08D62314BF52DC2B7886F00B14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred financing costs related to mortgage notes and bonds payable</link:label>
    <link:label id="lab_us-gaap_DeferredFinanceCostsNet_885E6A08D62314BF52DC2B7886F00B14_label_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNet_885E6A08D62314BF52DC2B7886F00B14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Issuance Costs, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_885E6A08D62314BF52DC2B7886F00B14" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_885E6A08D62314BF52DC2B7886F00B14" xlink:to="lab_us-gaap_DeferredFinanceCostsNet_885E6A08D62314BF52DC2B7886F00B14" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfStockholdersEquityAbstract_96538F14E0073CD5C2C12B78875DC0FF_label_en-US" xlink:label="lab_us-gaap_StatementOfStockholdersEquityAbstract_96538F14E0073CD5C2C12B78875DC0FF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Stockholders' Equity [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfStockholdersEquityAbstract" xlink:label="loc_us-gaap_StatementOfStockholdersEquityAbstract_96538F14E0073CD5C2C12B78875DC0FF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfStockholdersEquityAbstract_96538F14E0073CD5C2C12B78875DC0FF" xlink:to="lab_us-gaap_StatementOfStockholdersEquityAbstract_96538F14E0073CD5C2C12B78875DC0FF" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementTable_E07F89017B75C17EC45C2B78875DD01B_terseLabel_en-US" xlink:label="lab_us-gaap_StatementTable_E07F89017B75C17EC45C2B78875DD01B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:label id="lab_us-gaap_StatementTable_E07F89017B75C17EC45C2B78875DD01B_label_en-US" xlink:label="lab_us-gaap_StatementTable_E07F89017B75C17EC45C2B78875DD01B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementTable" xlink:label="loc_us-gaap_StatementTable_E07F89017B75C17EC45C2B78875DD01B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementTable_E07F89017B75C17EC45C2B78875DD01B" xlink:to="lab_us-gaap_StatementTable_E07F89017B75C17EC45C2B78875DD01B" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_5557B4DEC969B428E5722B78875D628E_terseLabel_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_5557B4DEC969B428E5722B78875D628E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:label id="lab_us-gaap_StatementEquityComponentsAxis_5557B4DEC969B428E5722B78875D628E_label_en-US" xlink:label="lab_us-gaap_StatementEquityComponentsAxis_5557B4DEC969B428E5722B78875D628E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Components [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementEquityComponentsAxis" xlink:label="loc_us-gaap_StatementEquityComponentsAxis_5557B4DEC969B428E5722B78875D628E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementEquityComponentsAxis_5557B4DEC969B428E5722B78875D628E" xlink:to="lab_us-gaap_StatementEquityComponentsAxis_5557B4DEC969B428E5722B78875D628E" xlink:type="arc" />
    <link:label id="lab_us-gaap_EquityComponentDomain_1864CA2ED13F9A85B0E72B78875D4075_terseLabel_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_1864CA2ED13F9A85B0E72B78875D4075" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:label id="lab_us-gaap_EquityComponentDomain_1864CA2ED13F9A85B0E72B78875D4075_label_en-US" xlink:label="lab_us-gaap_EquityComponentDomain_1864CA2ED13F9A85B0E72B78875D4075" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Component [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquityComponentDomain" xlink:label="loc_us-gaap_EquityComponentDomain_1864CA2ED13F9A85B0E72B78875D4075" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquityComponentDomain_1864CA2ED13F9A85B0E72B78875D4075" xlink:to="lab_us-gaap_EquityComponentDomain_1864CA2ED13F9A85B0E72B78875D4075" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockMember_91FC3CE92D34EEF27EA82B78875D226B_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockMember_91FC3CE92D34EEF27EA82B78875D226B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred Stock</link:label>
    <link:label id="lab_us-gaap_PreferredStockMember_91FC3CE92D34EEF27EA82B78875D226B_label_en-US" xlink:label="lab_us-gaap_PreferredStockMember_91FC3CE92D34EEF27EA82B78875D226B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockMember" xlink:label="loc_us-gaap_PreferredStockMember_91FC3CE92D34EEF27EA82B78875D226B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockMember_91FC3CE92D34EEF27EA82B78875D226B" xlink:to="lab_us-gaap_PreferredStockMember_91FC3CE92D34EEF27EA82B78875D226B" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_2077232742A4635DB2D82B78875D8318_terseLabel_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_2077232742A4635DB2D82B78875D8318" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional Paid-in Capital</link:label>
    <link:label id="lab_us-gaap_AdditionalPaidInCapitalMember_2077232742A4635DB2D82B78875D8318_label_en-US" xlink:label="lab_us-gaap_AdditionalPaidInCapitalMember_2077232742A4635DB2D82B78875D8318" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additional Paid-in Capital [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdditionalPaidInCapitalMember" xlink:label="loc_us-gaap_AdditionalPaidInCapitalMember_2077232742A4635DB2D82B78875D8318" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdditionalPaidInCapitalMember_2077232742A4635DB2D82B78875D8318" xlink:to="lab_us-gaap_AdditionalPaidInCapitalMember_2077232742A4635DB2D82B78875D8318" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_350F0723595F02606EFC2B78875D1B83_terseLabel_en-US" xlink:label="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_350F0723595F02606EFC2B78875D1B83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributions in Excess of Accumulated Earnings</link:label>
    <link:label id="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_350F0723595F02606EFC2B78875D1B83_label_en-US" xlink:label="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_350F0723595F02606EFC2B78875D1B83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accumulated Distributions in Excess of Net Income [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember" xlink:label="loc_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_350F0723595F02606EFC2B78875D1B83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_350F0723595F02606EFC2B78875D1B83" xlink:to="lab_us-gaap_AccumulatedDistributionsInExcessOfNetIncomeMember_350F0723595F02606EFC2B78875D1B83" xlink:type="arc" />
    <link:label id="lab_us-gaap_ParentMember_81989128D9E381BACD712B78875DE8E3_terseLabel_en-US" xlink:label="lab_us-gaap_ParentMember_81989128D9E381BACD712B78875DE8E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total Stockholders&#8217; Equity</link:label>
    <link:label id="lab_us-gaap_ParentMember_81989128D9E381BACD712B78875DE8E3_label_en-US" xlink:label="lab_us-gaap_ParentMember_81989128D9E381BACD712B78875DE8E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Parent [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ParentMember" xlink:label="loc_us-gaap_ParentMember_81989128D9E381BACD712B78875DE8E3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ParentMember_81989128D9E381BACD712B78875DE8E3" xlink:to="lab_us-gaap_ParentMember_81989128D9E381BACD712B78875DE8E3" xlink:type="arc" />
    <link:label id="lab_us-gaap_NoncontrollingInterestMember_D6115A0ABB1271CF77EB2B78875D5718_terseLabel_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_D6115A0ABB1271CF77EB2B78875D5718" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-Controlling Interest</link:label>
    <link:label id="lab_us-gaap_NoncontrollingInterestMember_D6115A0ABB1271CF77EB2B78875D5718_label_en-US" xlink:label="lab_us-gaap_NoncontrollingInterestMember_D6115A0ABB1271CF77EB2B78875D5718" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncontrollingInterestMember" xlink:label="loc_us-gaap_NoncontrollingInterestMember_D6115A0ABB1271CF77EB2B78875D5718" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoncontrollingInterestMember_D6115A0ABB1271CF77EB2B78875D5718" xlink:to="lab_us-gaap_NoncontrollingInterestMember_D6115A0ABB1271CF77EB2B78875D5718" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementLineItems_089CC62865FD44CD073B2B78875DEBFE_terseLabel_en-US" xlink:label="lab_us-gaap_StatementLineItems_089CC62865FD44CD073B2B78875DEBFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:label id="lab_us-gaap_StatementLineItems_089CC62865FD44CD073B2B78875DEBFE_label_en-US" xlink:label="lab_us-gaap_StatementLineItems_089CC62865FD44CD073B2B78875DEBFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementLineItems" xlink:label="loc_us-gaap_StatementLineItems_089CC62865FD44CD073B2B78875DEBFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementLineItems_089CC62865FD44CD073B2B78875DEBFE" xlink:to="lab_us-gaap_StatementLineItems_089CC62865FD44CD073B2B78875DEBFE" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_B162759DF38149BD329F2B78875D743C_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_B162759DF38149BD329F2B78875D743C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_B162759DF38149BD329F2B78875D743C_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_B162759DF38149BD329F2B78875D743C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInStockholdersEquityRollForward" xlink:label="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_B162759DF38149BD329F2B78875D743C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_B162759DF38149BD329F2B78875D743C" xlink:to="lab_us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_B162759DF38149BD329F2B78875D743C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_D4ADE015D417C0EA21F52B78875DA1B8_periodStartLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_D4ADE015D417C0EA21F52B78875DA1B8" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance, preferred stock (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_D4ADE015D417C0EA21F52B78875DA1B8_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_D4ADE015D417C0EA21F52B78875DA1B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_D4ADE015D417C0EA21F52B78875DA1B8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_D4ADE015D417C0EA21F52B78875DA1B8" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_D4ADE015D417C0EA21F52B78875DA1B8" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_246AC0C0F7481EBD1DA42B78875DAA5D_periodStartLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_246AC0C0F7481EBD1DA42B78875DAA5D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_246AC0C0F7481EBD1DA42B78875DAA5D_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_246AC0C0F7481EBD1DA42B78875DAA5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_246AC0C0F7481EBD1DA42B78875DAA5D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_246AC0C0F7481EBD1DA42B78875DAA5D" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_246AC0C0F7481EBD1DA42B78875DAA5D" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A061621C7229B36DDBF52B78875DEAF0_periodStartLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A061621C7229B36DDBF52B78875DEAF0" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">Beginning balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A061621C7229B36DDBF52B78875DEAF0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A061621C7229B36DDBF52B78875DEAF0" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_A061621C7229B36DDBF52B78875DEAF0" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_2CEE0AE8601F59A860432B78875DC009_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_2CEE0AE8601F59A860432B78875DC009" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of OP Units as consideration in real estate acquisitions, net</link:label>
    <link:label id="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_2CEE0AE8601F59A860432B78875DC009_label_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_2CEE0AE8601F59A860432B78875DC009" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Acquisitions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockIssuedDuringPeriodValueAcquisitions" xlink:label="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_2CEE0AE8601F59A860432B78875DC009" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockIssuedDuringPeriodValueAcquisitions_2CEE0AE8601F59A860432B78875DC009" xlink:to="lab_us-gaap_StockIssuedDuringPeriodValueAcquisitions_2CEE0AE8601F59A860432B78875DC009" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_495065887FCAF8D2C2492B78875D40E6_terseLabel_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_495065887FCAF8D2C2492B78875D40E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption of OP Units (in shares)</link:label>
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_495065887FCAF8D2C2492B78875D40E6_label_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_495065887FCAF8D2C2492B78875D40E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Redeemed or Called During Period, Shares</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodShares" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares_495065887FCAF8D2C2492B78875D40E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares_495065887FCAF8D2C2492B78875D40E6" xlink:to="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_495065887FCAF8D2C2492B78875D40E6" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_F0F9CAFE07ED0A1E51D12B78875D89F4_negatedLabel_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_F0F9CAFE07ED0A1E51D12B78875D89F4" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Redemptions of OP Units</link:label>
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_F0F9CAFE07ED0A1E51D12B78875D89F4_label_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_F0F9CAFE07ED0A1E51D12B78875D89F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Redeemed or Called During Period, Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_F0F9CAFE07ED0A1E51D12B78875D89F4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_F0F9CAFE07ED0A1E51D12B78875D89F4" xlink:to="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_F0F9CAFE07ED0A1E51D12B78875D89F4" xlink:type="arc" />
    <link:label id="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406_terseLabel_en-US" xlink:label="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of preferred stock, net (in shares)</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406_label_en-US" xlink:label="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Issued for Services, Preferred Stock</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406_documentation_en-US" xlink:label="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Issued for Services, Preferred Stock</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock" xlink:label="loc_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406" xlink:to="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesPreferredStock_68002D3ADC6C938CF2572B78875DE406" xlink:type="arc" />
    <link:label id="lab_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B_terseLabel_en-US" xlink:label="lab_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of preferred stock, net</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B_label_en-US" xlink:label="lab_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Issued for Services, Preferred Stock</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B_documentation_en-US" xlink:label="lab_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Issued for Services, Preferred Stock</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock" xlink:label="loc_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B" xlink:to="lab_land_StockIssuedDuringPeriodValueIssuedforServicesPreferredStock_FF407F0FE6A9B819C72E2B78875D7E0B" xlink:type="arc" />
    <link:label id="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987_terseLabel_en-US" xlink:label="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of common stock, net (in shares)</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987_label_en-US" xlink:label="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Issued for Services, Common Stock</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987_documentation_en-US" xlink:label="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Shares, Issued for Services, Common Stock</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock" xlink:label="loc_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987" xlink:to="lab_land_StockIssuedDuringPeriodSharesIssuedforServicesCommonStock_69C4C21FD27709DB536D2B78875DB987" xlink:type="arc" />
    <link:label id="lab_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD_terseLabel_en-US" xlink:label="lab_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Issuance of common stock, net</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD_label_en-US" xlink:label="lab_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Issued for Services, Common Stock</link:label>
    <link:label id="lab_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD_documentation_en-US" xlink:label="lab_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stock Issued During Period, Value, Issued for Services, Common Stock</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock" xlink:label="loc_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD" xlink:to="lab_land_StockIssuedDuringPeriodValueIssuedforServicesCommonStock_64655D7BBD66DFE9B3C12B78875D4BBD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_EC96EC4B408E40C65D0E2B78875D003D_terseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_EC96EC4B408E40C65D0E2B78875D003D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss)</link:label>
    <link:label id="lab_us-gaap_ProfitLoss_EC96EC4B408E40C65D0E2B78875D003D_label_en-US" xlink:label="lab_us-gaap_ProfitLoss_EC96EC4B408E40C65D0E2B78875D003D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_EC96EC4B408E40C65D0E2B78875D003D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_EC96EC4B408E40C65D0E2B78875D003D" xlink:to="lab_us-gaap_ProfitLoss_EC96EC4B408E40C65D0E2B78875D003D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsPreferredStock_D59ABA4B3149BF7E65602B78875D676E_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DividendsPreferredStock_D59ABA4B3149BF7E65602B78875D676E" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Dividends&#8212;Series B Preferred Stock</link:label>
    <link:label id="lab_us-gaap_DividendsPreferredStock_D59ABA4B3149BF7E65602B78875D676E_label_en-US" xlink:label="lab_us-gaap_DividendsPreferredStock_D59ABA4B3149BF7E65602B78875D676E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends, Preferred Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsPreferredStock" xlink:label="loc_us-gaap_DividendsPreferredStock_D59ABA4B3149BF7E65602B78875D676E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsPreferredStock_D59ABA4B3149BF7E65602B78875D676E" xlink:to="lab_us-gaap_DividendsPreferredStock_D59ABA4B3149BF7E65602B78875D676E" xlink:type="arc" />
    <link:label id="lab_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47_negatedLabel_en-US" xlink:label="lab_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Distributions&#8212;common stock and OP Units</link:label>
    <link:label id="lab_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47_label_en-US" xlink:label="lab_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders Equity, Decrease from Distributions</link:label>
    <link:label id="lab_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47_documentation_en-US" xlink:label="lab_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stockholders Equity, Decrease from Distributions</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_StockholdersEquityDecreasefromDistributions" xlink:label="loc_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47" xlink:to="lab_land_StockholdersEquityDecreasefromDistributions_A149191832674CF0FE922B78875D5E47" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinorityInterestDecreaseFromRedemptions_4BD4F1A46954393892CB2B78875DCC03_negatedLabel_en-US" xlink:label="lab_us-gaap_MinorityInterestDecreaseFromRedemptions_4BD4F1A46954393892CB2B78875DCC03" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Adjustment to non-controlling interests resulting from changes in ownership of the Operating Partnership</link:label>
    <link:label id="lab_us-gaap_MinorityInterestDecreaseFromRedemptions_4BD4F1A46954393892CB2B78875DCC03_label_en-US" xlink:label="lab_us-gaap_MinorityInterestDecreaseFromRedemptions_4BD4F1A46954393892CB2B78875DCC03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterestDecreaseFromRedemptions" xlink:label="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_4BD4F1A46954393892CB2B78875DCC03" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterestDecreaseFromRedemptions_4BD4F1A46954393892CB2B78875DCC03" xlink:to="lab_us-gaap_MinorityInterestDecreaseFromRedemptions_4BD4F1A46954393892CB2B78875DCC03" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_0A61253651C5AA1743FE2B78875D1927_periodEndLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_0A61253651C5AA1743FE2B78875D1927" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance, preferred stock (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_0A61253651C5AA1743FE2B78875D1927" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_0A61253651C5AA1743FE2B78875D1927" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_0A61253651C5AA1743FE2B78875D1927" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_63E242467E6B618885652B78875DCAE7_periodEndLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_63E242467E6B618885652B78875DCAE7" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_63E242467E6B618885652B78875DCAE7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_63E242467E6B618885652B78875DCAE7" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_63E242467E6B618885652B78875DCAE7" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E5ED4C82284226E0E2B52B78875D638F_periodEndLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E5ED4C82284226E0E2B52B78875D638F" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">Ending balance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E5ED4C82284226E0E2B52B78875D638F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E5ED4C82284226E0E2B52B78875D638F" xlink:to="lab_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_E5ED4C82284226E0E2B52B78875D638F" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountingPoliciesAbstract_80C80209EADB9E885E1F1FBE49B9F94A_label_en-US" xlink:label="lab_us-gaap_AccountingPoliciesAbstract_80C80209EADB9E885E1F1FBE49B9F94A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounting Policies [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="loc_us-gaap_AccountingPoliciesAbstract_80C80209EADB9E885E1F1FBE49B9F94A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountingPoliciesAbstract_80C80209EADB9E885E1F1FBE49B9F94A" xlink:to="lab_us-gaap_AccountingPoliciesAbstract_80C80209EADB9E885E1F1FBE49B9F94A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6B1DA067FD1D4C876B1D1FBE49BA30C4_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6B1DA067FD1D4C876B1D1FBE49BA30C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Related Party Transactions, by Related Party [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6B1DA067FD1D4C876B1D1FBE49BA30C4_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6B1DA067FD1D4C876B1D1FBE49BA30C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Related Party Transactions, by Related Party [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6B1DA067FD1D4C876B1D1FBE49BA30C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6B1DA067FD1D4C876B1D1FBE49BA30C4" xlink:to="lab_us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_6B1DA067FD1D4C876B1D1FBE49BA30C4" xlink:type="arc" />
    <link:label id="lab_srt_ProductOrServiceAxis_D88D8608A7FFA9BA19691FBE49BAFECA_terseLabel_en-US" xlink:label="lab_srt_ProductOrServiceAxis_D88D8608A7FFA9BA19691FBE49BAFECA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:label id="lab_srt_ProductOrServiceAxis_D88D8608A7FFA9BA19691FBE49BAFECA_label_en-US" xlink:label="lab_srt_ProductOrServiceAxis_D88D8608A7FFA9BA19691FBE49BAFECA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductOrServiceAxis" xlink:label="loc_srt_ProductOrServiceAxis_D88D8608A7FFA9BA19691FBE49BAFECA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductOrServiceAxis_D88D8608A7FFA9BA19691FBE49BAFECA" xlink:to="lab_srt_ProductOrServiceAxis_D88D8608A7FFA9BA19691FBE49BAFECA" xlink:type="arc" />
    <link:label id="lab_srt_ProductsAndServicesDomain_BF21EC3EB97B8393EA161FBE49BAD5E1_terseLabel_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_BF21EC3EB97B8393EA161FBE49BAD5E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:label id="lab_srt_ProductsAndServicesDomain_BF21EC3EB97B8393EA161FBE49BAD5E1_label_en-US" xlink:label="lab_srt_ProductsAndServicesDomain_BF21EC3EB97B8393EA161FBE49BAD5E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Product and Service [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_ProductsAndServicesDomain" xlink:label="loc_srt_ProductsAndServicesDomain_BF21EC3EB97B8393EA161FBE49BAD5E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_ProductsAndServicesDomain_BF21EC3EB97B8393EA161FBE49BAD5E1" xlink:to="lab_srt_ProductsAndServicesDomain_BF21EC3EB97B8393EA161FBE49BAD5E1" xlink:type="arc" />
    <link:label id="lab_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE_terseLabel_en-US" xlink:label="lab_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Harvested Crops</link:label>
    <link:label id="lab_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE_label_en-US" xlink:label="lab_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Harvested Crops [Member]</link:label>
    <link:label id="lab_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE_documentation_en-US" xlink:label="lab_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Harvested Crops [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HarvestedCropsMember" xlink:label="loc_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE" xlink:to="lab_land_HarvestedCropsMember_7742E34BDCBF2D4CAB1E1FBE49BBC4FE" xlink:type="arc" />
    <link:label id="lab_dei_LegalEntityAxis_0753812910735DA470181FBE49BBDEAD_terseLabel_en-US" xlink:label="lab_dei_LegalEntityAxis_0753812910735DA470181FBE49BBDEAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:label id="lab_dei_LegalEntityAxis_0753812910735DA470181FBE49BBDEAD_label_en-US" xlink:label="lab_dei_LegalEntityAxis_0753812910735DA470181FBE49BBDEAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Legal Entity [Axis]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_LegalEntityAxis" xlink:label="loc_dei_LegalEntityAxis_0753812910735DA470181FBE49BBDEAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_LegalEntityAxis_0753812910735DA470181FBE49BBDEAD" xlink:to="lab_dei_LegalEntityAxis_0753812910735DA470181FBE49BBDEAD" xlink:type="arc" />
    <link:label id="lab_dei_EntityDomain_6A7A95637DCDECC9B7341FBE49BB0AE4_terseLabel_en-US" xlink:label="lab_dei_EntityDomain_6A7A95637DCDECC9B7341FBE49BB0AE4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:label id="lab_dei_EntityDomain_6A7A95637DCDECC9B7341FBE49BB0AE4_label_en-US" xlink:label="lab_dei_EntityDomain_6A7A95637DCDECC9B7341FBE49BB0AE4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity [Domain]</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityDomain" xlink:label="loc_dei_EntityDomain_6A7A95637DCDECC9B7341FBE49BB0AE4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityDomain_6A7A95637DCDECC9B7341FBE49BB0AE4" xlink:to="lab_dei_EntityDomain_6A7A95637DCDECC9B7341FBE49BB0AE4" xlink:type="arc" />
    <link:label id="lab_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E_terseLabel_en-US" xlink:label="lab_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land Advisers</link:label>
    <link:label id="lab_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E_label_en-US" xlink:label="lab_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gladstone Land Advisers Inc [Member]</link:label>
    <link:label id="lab_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E_documentation_en-US" xlink:label="lab_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gladstone land advisers inc.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_GladstoneLandAdvisersIncMember" xlink:label="loc_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E" xlink:to="lab_land_GladstoneLandAdvisersIncMember_1EB47A13F0F7995363131FBE49BCB11E" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionAxis_65480729921A4A7F25571FBE49BC4D6E_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis_65480729921A4A7F25571FBE49BC4D6E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Axis]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionAxis_65480729921A4A7F25571FBE49BC4D6E_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionAxis_65480729921A4A7F25571FBE49BC4D6E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionAxis_65480729921A4A7F25571FBE49BC4D6E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionAxis_65480729921A4A7F25571FBE49BC4D6E" xlink:to="lab_us-gaap_RelatedPartyTransactionAxis_65480729921A4A7F25571FBE49BC4D6E" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionDomain_074890D54D80984963401FBE49BCAC8B_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain_074890D54D80984963401FBE49BCAC8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Domain]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionDomain_074890D54D80984963401FBE49BCAC8B_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionDomain_074890D54D80984963401FBE49BCAC8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionDomain" xlink:label="loc_us-gaap_RelatedPartyTransactionDomain_074890D54D80984963401FBE49BCAC8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionDomain_074890D54D80984963401FBE49BCAC8B" xlink:to="lab_us-gaap_RelatedPartyTransactionDomain_074890D54D80984963401FBE49BCAC8B" xlink:type="arc" />
    <link:label id="lab_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496_terseLabel_en-US" xlink:label="lab_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Taxable REIT Subsidiary</link:label>
    <link:label id="lab_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496_label_en-US" xlink:label="lab_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Taxable REIT Subsidiary [Member]</link:label>
    <link:label id="lab_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496_documentation_en-US" xlink:label="lab_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Taxable REIT Subsidiary [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TaxableREITSubsidiaryMember" xlink:label="loc_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496" xlink:to="lab_land_TaxableREITSubsidiaryMember_F71EF30F9DBBC06097B61FBE49BDF496" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_13BACD5DD17CCE9E70181FBE49BE8BC9_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_13BACD5DD17CCE9E70181FBE49BE8BC9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionLineItems_13BACD5DD17CCE9E70181FBE49BE8BC9_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionLineItems_13BACD5DD17CCE9E70181FBE49BE8BC9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionLineItems" xlink:label="loc_us-gaap_RelatedPartyTransactionLineItems_13BACD5DD17CCE9E70181FBE49BE8BC9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionLineItems_13BACD5DD17CCE9E70181FBE49BE8BC9" xlink:to="lab_us-gaap_RelatedPartyTransactionLineItems_13BACD5DD17CCE9E70181FBE49BE8BC9" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherOperatingIncome_67038CFB22F3BA12DEFE1FBE49BE4A07_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingIncome_67038CFB22F3BA12DEFE1FBE49BE4A07" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Sales revenue</link:label>
    <link:label id="lab_us-gaap_OtherOperatingIncome_67038CFB22F3BA12DEFE1FBE49BE4A07_label_en-US" xlink:label="lab_us-gaap_OtherOperatingIncome_67038CFB22F3BA12DEFE1FBE49BE4A07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Operating Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherOperatingIncome" xlink:label="loc_us-gaap_OtherOperatingIncome_67038CFB22F3BA12DEFE1FBE49BE4A07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherOperatingIncome_67038CFB22F3BA12DEFE1FBE49BE4A07" xlink:to="lab_us-gaap_OtherOperatingIncome_67038CFB22F3BA12DEFE1FBE49BE4A07" xlink:type="arc" />
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_8AA64D0046F124EC326F1FBE49BF51D5_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_8AA64D0046F124EC326F1FBE49BF51D5" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Cost of sales</link:label>
    <link:label id="lab_us-gaap_CostOfGoodsAndServicesSold_8AA64D0046F124EC326F1FBE49BF51D5_label_en-US" xlink:label="lab_us-gaap_CostOfGoodsAndServicesSold_8AA64D0046F124EC326F1FBE49BF51D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cost of Goods and Services Sold</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="loc_us-gaap_CostOfGoodsAndServicesSold_8AA64D0046F124EC326F1FBE49BF51D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CostOfGoodsAndServicesSold_8AA64D0046F124EC326F1FBE49BF51D5" xlink:to="lab_us-gaap_CostOfGoodsAndServicesSold_8AA64D0046F124EC326F1FBE49BF51D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ManagementFeeExpense_53EF00A30D1B8B81CC081FBE49BFE482_terseLabel_en-US" xlink:label="lab_us-gaap_ManagementFeeExpense_53EF00A30D1B8B81CC081FBE49BFE482" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base management fee</link:label>
    <link:label id="lab_us-gaap_ManagementFeeExpense_53EF00A30D1B8B81CC081FBE49BFE482_label_en-US" xlink:label="lab_us-gaap_ManagementFeeExpense_53EF00A30D1B8B81CC081FBE49BFE482" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Management Fee Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ManagementFeeExpense" xlink:label="loc_us-gaap_ManagementFeeExpense_53EF00A30D1B8B81CC081FBE49BFE482" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ManagementFeeExpense_53EF00A30D1B8B81CC081FBE49BFE482" xlink:to="lab_us-gaap_ManagementFeeExpense_53EF00A30D1B8B81CC081FBE49BFE482" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockTextBlock_F96CE316B48817B7302D2200E5AB8B77_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockTextBlock_F96CE316B48817B7302D2200E5AB8B77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Mandatorily-Redeemable Preferred Stock</link:label>
    <link:label id="lab_us-gaap_PreferredStockTextBlock_F96CE316B48817B7302D2200E5AB8B77_label_en-US" xlink:label="lab_us-gaap_PreferredStockTextBlock_F96CE316B48817B7302D2200E5AB8B77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockTextBlock" xlink:label="loc_us-gaap_PreferredStockTextBlock_F96CE316B48817B7302D2200E5AB8B77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockTextBlock_F96CE316B48817B7302D2200E5AB8B77" xlink:to="lab_us-gaap_PreferredStockTextBlock_F96CE316B48817B7302D2200E5AB8B77" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4_terseLabel_en-US" xlink:label="lab_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit West notes payable</link:label>
    <link:label id="lab_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4_label_en-US" xlink:label="lab_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable [Member]</link:label>
    <link:label id="lab_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4_documentation_en-US" xlink:label="lab_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditWestNotePayableMember" xlink:label="loc_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4" xlink:to="lab_land_FarmCreditWestNotePayableMember_7DF659BFBA40C6061008265DAFBA33D4" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD_terseLabel_en-US" xlink:label="lab_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable Issued July 12, 2018</link:label>
    <link:label id="lab_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD_label_en-US" xlink:label="lab_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable Issued July 12, 2018, Due 2043 [Member]</link:label>
    <link:label id="lab_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD_documentation_en-US" xlink:label="lab_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable Issued July 12, 2018, Due 2043 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member" xlink:label="loc_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD" xlink:to="lab_land_FarmCreditFLNotePayableIssuedJuly122018Due2043Member_30AB3C8BF59A1AF11FF4265DAFBA58AD" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68_terseLabel_en-US" xlink:label="lab_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable Issued July 17, 2018</link:label>
    <link:label id="lab_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68_label_en-US" xlink:label="lab_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable Issued July 17, 2018, Due 2043 [Member]</link:label>
    <link:label id="lab_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68_documentation_en-US" xlink:label="lab_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable Issued July 17, 2018, Due 2043 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member" xlink:label="loc_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68" xlink:to="lab_land_FarmCreditFLNotePayableIssuedJuly172018Due2043Member_991CC75C3B1981B9F5A8265DAFBB0D68" xlink:type="arc" />
    <link:label id="lab_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958_terseLabel_en-US" xlink:label="lab_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SWGA Farm Credit notes payable</link:label>
    <link:label id="lab_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958_label_en-US" xlink:label="lab_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SWGA Farm Credit Note Payable Due 2043 [Member]</link:label>
    <link:label id="lab_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958_documentation_en-US" xlink:label="lab_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SWGA Farm Credit Note Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SWGAFarmCreditNotePayableDue2043Member" xlink:label="loc_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958" xlink:to="lab_land_SWGAFarmCreditNotePayableDue2043Member_B1D9784674C203410D65265DAFBB7958" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6_terseLabel_en-US" xlink:label="lab_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable Issued November 1, 2018</link:label>
    <link:label id="lab_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6_label_en-US" xlink:label="lab_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable Issued November 1, 2018, Due 2043 [Member]</link:label>
    <link:label id="lab_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6_documentation_en-US" xlink:label="lab_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable Issued November 1, 2018, Due 2043 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member" xlink:label="loc_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6" xlink:to="lab_land_FarmCreditWestNotePayableIssuedNovember12018Due2043Member_A78F34B0D5A5584F78D1265DAFBB82D6" xlink:type="arc" />
    <link:label id="lab_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760_terseLabel_en-US" xlink:label="lab_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Plains Land Bank notes payable</link:label>
    <link:label id="lab_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760_label_en-US" xlink:label="lab_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Plains Land Bank Note Payable Issued November 20, 2018, Due 2043 [Member]</link:label>
    <link:label id="lab_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760_documentation_en-US" xlink:label="lab_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Plains Land Bank Note Payable Issued November 20, 2018, Due 2043 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member" xlink:label="loc_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760" xlink:to="lab_land_PlainsLandBankNotePayableIssuedNovember202018Due2043Member_9E6F4167E70170D65C3C265DAFBB1760" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionsAbstract_EF72A6884ABA2C5873142200E3750B3F_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsAbstract_EF72A6884ABA2C5873142200E3750B3F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transactions [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsAbstract" xlink:label="loc_us-gaap_RelatedPartyTransactionsAbstract_EF72A6884ABA2C5873142200E3750B3F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsAbstract_EF72A6884ABA2C5873142200E3750B3F" xlink:to="lab_us-gaap_RelatedPartyTransactionsAbstract_EF72A6884ABA2C5873142200E3750B3F" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_2DDB612A3A5A71157FE72200E375B116_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_2DDB612A3A5A71157FE72200E375B116" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related-Party Transactions</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_2DDB612A3A5A71157FE72200E375B116_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_2DDB612A3A5A71157FE72200E375B116" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transactions Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsDisclosureTextBlock" xlink:label="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_2DDB612A3A5A71157FE72200E375B116" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_2DDB612A3A5A71157FE72200E375B116" xlink:to="lab_us-gaap_RelatedPartyTransactionsDisclosureTextBlock_2DDB612A3A5A71157FE72200E375B116" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCommitmentsAxis_1633D2555D4EAD520D262702D91B588B_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentsAxis_1633D2555D4EAD520D262702D91B588B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Commitments [Axis]</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentsAxis_1633D2555D4EAD520D262702D91B588B_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentsAxis_1633D2555D4EAD520D262702D91B588B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitments [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCommitmentsAxis" xlink:label="loc_us-gaap_OtherCommitmentsAxis_1633D2555D4EAD520D262702D91B588B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentsAxis_1633D2555D4EAD520D262702D91B588B" xlink:to="lab_us-gaap_OtherCommitmentsAxis_1633D2555D4EAD520D262702D91B588B" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCommitmentsDomain_535C5BE44EB104F86D1E27036DD3603E_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitmentsDomain_535C5BE44EB104F86D1E27036DD3603E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Commitments [Domain]</link:label>
    <link:label id="lab_us-gaap_OtherCommitmentsDomain_535C5BE44EB104F86D1E27036DD3603E_label_en-US" xlink:label="lab_us-gaap_OtherCommitmentsDomain_535C5BE44EB104F86D1E27036DD3603E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitments [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCommitmentsDomain" xlink:label="loc_us-gaap_OtherCommitmentsDomain_535C5BE44EB104F86D1E27036DD3603E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitmentsDomain_535C5BE44EB104F86D1E27036DD3603E" xlink:to="lab_us-gaap_OtherCommitmentsDomain_535C5BE44EB104F86D1E27036DD3603E" xlink:type="arc" />
    <link:label id="lab_us-gaap_CapitalAdditionsMember_C6245AAEDFE2ED8D8DCE2704B375C0DD_terseLabel_en-US" xlink:label="lab_us-gaap_CapitalAdditionsMember_C6245AAEDFE2ED8D8DCE2704B375C0DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital Commitment</link:label>
    <link:label id="lab_us-gaap_CapitalAdditionsMember_C6245AAEDFE2ED8D8DCE2704B375C0DD_label_en-US" xlink:label="lab_us-gaap_CapitalAdditionsMember_C6245AAEDFE2ED8D8DCE2704B375C0DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Addition Purchase Commitments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CapitalAdditionsMember" xlink:label="loc_us-gaap_CapitalAdditionsMember_C6245AAEDFE2ED8D8DCE2704B375C0DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CapitalAdditionsMember_C6245AAEDFE2ED8D8DCE2704B375C0DD" xlink:to="lab_us-gaap_CapitalAdditionsMember_C6245AAEDFE2ED8D8DCE2704B375C0DD" xlink:type="arc" />
    <link:label id="lab_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364_terseLabel_en-US" xlink:label="lab_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leases Terminated Early</link:label>
    <link:label id="lab_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364_label_en-US" xlink:label="lab_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leases Terminated Early [Member]</link:label>
    <link:label id="lab_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364_documentation_en-US" xlink:label="lab_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Leases Terminated Early [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeasesTerminatedEarlyMember" xlink:label="loc_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364" xlink:to="lab_land_LeasesTerminatedEarlyMember_A382536F84B1DA13FF3426D138F3B364" xlink:type="arc" />
    <link:label id="lab_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F_terseLabel_en-US" xlink:label="lab_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Arizona, California, Florida and Michigan</link:label>
    <link:label id="lab_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F_label_en-US" xlink:label="lab_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Arizona, California, Florida and Michigan [Member]</link:label>
    <link:label id="lab_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F_documentation_en-US" xlink:label="lab_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Arizona, California, Florida and Michigan [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ArizonaCaliforniaFloridaandMichiganMember" xlink:label="loc_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F" xlink:to="lab_land_ArizonaCaliforniaFloridaandMichiganMember_AEE65B5F647E41E63EAC26D138F5758F" xlink:type="arc" />
    <link:label id="lab_land_NumberOfLeases_AF3DDB8DD5872CDAC39926D138F59786_verboseLabel_en-US" xlink:label="lab_land_NumberOfLeases_AF3DDB8DD5872CDAC39926D138F59786" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Number of Leases</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfLeases" xlink:label="loc_land_NumberOfLeases_AF3DDB8DD5872CDAC39926D138F59786" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfLeases_AF3DDB8DD5872CDAC39926D138F59786" xlink:to="lab_land_NumberOfLeases_AF3DDB8DD5872CDAC39926D138F59786" xlink:type="arc" />
    <link:label id="lab_us-gaap_AreaOfRealEstateProperty_1101B3EA834947020D1C26D138F6A126_netLabel_en-US" xlink:label="lab_us-gaap_AreaOfRealEstateProperty_1101B3EA834947020D1C26D138F6A126" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Total Farm Acres</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AreaOfRealEstateProperty" xlink:label="loc_us-gaap_AreaOfRealEstateProperty_1101B3EA834947020D1C26D138F6A126" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AreaOfRealEstateProperty_1101B3EA834947020D1C26D138F6A126" xlink:to="lab_us-gaap_AreaOfRealEstateProperty_1101B3EA834947020D1C26D138F6A126" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherCommitment_D807F59C867B09787D2827018E415737_terseLabel_en-US" xlink:label="lab_us-gaap_OtherCommitment_D807F59C867B09787D2827018E415737" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitment to provide capital</link:label>
    <link:label id="lab_us-gaap_OtherCommitment_D807F59C867B09787D2827018E415737_label_en-US" xlink:label="lab_us-gaap_OtherCommitment_D807F59C867B09787D2827018E415737" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Commitment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherCommitment" xlink:label="loc_us-gaap_OtherCommitment_D807F59C867B09787D2827018E415737" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherCommitment_D807F59C867B09787D2827018E415737" xlink:to="lab_us-gaap_OtherCommitment_D807F59C867B09787D2827018E415737" xlink:type="arc" />
    <link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_6F02E61CB5BE3D676FF526D138F5D0C9_verboseLabel_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_6F02E61CB5BE3D676FF526D138F5D0C9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Write off of deferred rent receivable</link:label>
    <link:label id="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_6F02E61CB5BE3D676FF526D138F5D0C9_label_en-US" xlink:label="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_6F02E61CB5BE3D676FF526D138F5D0C9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Allowance for Doubtful Accounts Receivable, Write-offs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_6F02E61CB5BE3D676FF526D138F5D0C9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_6F02E61CB5BE3D676FF526D138F5D0C9" xlink:to="lab_us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs_6F02E61CB5BE3D676FF526D138F5D0C9" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredRentCredit_059F4791CF15EC2D998726D138F53C90_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredRentCredit_059F4791CF15EC2D998726D138F53C90" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred rent liability</link:label>
    <link:label id="lab_us-gaap_DeferredRentCredit_059F4791CF15EC2D998726D138F53C90_label_en-US" xlink:label="lab_us-gaap_DeferredRentCredit_059F4791CF15EC2D998726D138F53C90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Rent Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredRentCredit" xlink:label="loc_us-gaap_DeferredRentCredit_059F4791CF15EC2D998726D138F53C90" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredRentCredit_059F4791CF15EC2D998726D138F53C90" xlink:to="lab_us-gaap_DeferredRentCredit_059F4791CF15EC2D998726D138F53C90" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAtCostAbstract_90CAC54A07AE0F624C7D1D399933C255_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAtCostAbstract_90CAC54A07AE0F624C7D1D399933C255" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real estate:</link:label>
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAtCostAbstract_90CAC54A07AE0F624C7D1D399933C255_label_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAtCostAbstract_90CAC54A07AE0F624C7D1D399933C255" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Investment Property, at Cost [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAtCostAbstract" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCostAbstract_90CAC54A07AE0F624C7D1D399933C255" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyAtCostAbstract_90CAC54A07AE0F624C7D1D399933C255" xlink:to="lab_us-gaap_RealEstateInvestmentPropertyAtCostAbstract_90CAC54A07AE0F624C7D1D399933C255" xlink:type="arc" />
    <link:label id="lab_us-gaap_LandAndLandImprovements_CDD0B96F5E30ABE570121D3999342E8B_terseLabel_en-US" xlink:label="lab_us-gaap_LandAndLandImprovements_CDD0B96F5E30ABE570121D3999342E8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land and land improvements</link:label>
    <link:label id="lab_us-gaap_LandAndLandImprovements_CDD0B96F5E30ABE570121D3999342E8B_label_en-US" xlink:label="lab_us-gaap_LandAndLandImprovements_CDD0B96F5E30ABE570121D3999342E8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land and Land Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandAndLandImprovements" xlink:label="loc_us-gaap_LandAndLandImprovements_CDD0B96F5E30ABE570121D3999342E8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandAndLandImprovements_CDD0B96F5E30ABE570121D3999342E8B" xlink:to="lab_us-gaap_LandAndLandImprovements_CDD0B96F5E30ABE570121D3999342E8B" xlink:type="arc" />
    <link:label id="lab_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838_terseLabel_en-US" xlink:label="lab_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Irrigation systems</link:label>
    <link:label id="lab_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838_label_en-US" xlink:label="lab_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Irrigation Equipment System</link:label>
    <link:label id="lab_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838_documentation_en-US" xlink:label="lab_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Irrigation equipment system.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_IrrigationEquipmentSystem" xlink:label="loc_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838" xlink:to="lab_land_IrrigationEquipmentSystem_CFFC93656B8764A7F8391D3999343838" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154_terseLabel_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Horticulture</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154_label_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate And Accumulated Depreciation Carrying Amount Of Horticulture</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154_documentation_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate and accumulated depreciation carrying amount of horticulture.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture" xlink:label="loc_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154" xlink:to="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_240CD273803F564062961D3999354154" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentBuildingAndBuildingImprovements_B1DAB8B4C87220ABA00A1D3999341D0B_terseLabel_en-US" xlink:label="lab_us-gaap_InvestmentBuildingAndBuildingImprovements_B1DAB8B4C87220ABA00A1D3999341D0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm-related facilities</link:label>
    <link:label id="lab_us-gaap_InvestmentBuildingAndBuildingImprovements_B1DAB8B4C87220ABA00A1D3999341D0B_label_en-US" xlink:label="lab_us-gaap_InvestmentBuildingAndBuildingImprovements_B1DAB8B4C87220ABA00A1D3999341D0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment Building and Building Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InvestmentBuildingAndBuildingImprovements" xlink:label="loc_us-gaap_InvestmentBuildingAndBuildingImprovements_B1DAB8B4C87220ABA00A1D3999341D0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentBuildingAndBuildingImprovements_B1DAB8B4C87220ABA00A1D3999341D0B" xlink:to="lab_us-gaap_InvestmentBuildingAndBuildingImprovements_B1DAB8B4C87220ABA00A1D3999341D0B" xlink:type="arc" />
    <link:label id="lab_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63_terseLabel_en-US" xlink:label="lab_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other site improvements</link:label>
    <link:label id="lab_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63_label_en-US" xlink:label="lab_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Other Site Improvements</link:label>
    <link:label id="lab_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63_documentation_en-US" xlink:label="lab_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate other site improvements.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateOtherSiteImprovements" xlink:label="loc_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63" xlink:to="lab_land_RealEstateOtherSiteImprovements_1F3A2C422230160EE3281D3999352D63" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAtCost_BDFDC536748021C75C871D399935425A_totalLabel_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAtCost_BDFDC536748021C75C871D399935425A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Real estate, at gross cost</link:label>
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAtCost_BDFDC536748021C75C871D399935425A_label_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAtCost_BDFDC536748021C75C871D399935425A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Investment Property, at Cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAtCost" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCost_BDFDC536748021C75C871D399935425A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyAtCost_BDFDC536748021C75C871D399935425A" xlink:to="lab_us-gaap_RealEstateInvestmentPropertyAtCost_BDFDC536748021C75C871D399935425A" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_5C1D3CF7CC2C7F013B9E1D3999353A64_negatedLabel_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_5C1D3CF7CC2C7F013B9E1D3999353A64" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accumulated depreciation</link:label>
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_5C1D3CF7CC2C7F013B9E1D3999353A64_label_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_5C1D3CF7CC2C7F013B9E1D3999353A64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Investment Property, Accumulated Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_5C1D3CF7CC2C7F013B9E1D3999353A64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_5C1D3CF7CC2C7F013B9E1D3999353A64" xlink:to="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_5C1D3CF7CC2C7F013B9E1D3999353A64" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyNet_D3C98D8826E031BF3EB51D399936F715_totalLabel_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyNet_D3C98D8826E031BF3EB51D399936F715" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Real estate, net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateInvestmentPropertyNet" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNet_D3C98D8826E031BF3EB51D399936F715" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNet_D3C98D8826E031BF3EB51D399936F715" xlink:to="lab_us-gaap_RealEstateInvestmentPropertyNet_D3C98D8826E031BF3EB51D399936F715" xlink:type="arc" />
    <link:label id="lab_us-gaap_Depreciation_EC4C089F51BE6767DABD1D3999365BB0_terseLabel_en-US" xlink:label="lab_us-gaap_Depreciation_EC4C089F51BE6767DABD1D3999365BB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:label id="lab_us-gaap_Depreciation_EC4C089F51BE6767DABD1D3999365BB0_label_en-US" xlink:label="lab_us-gaap_Depreciation_EC4C089F51BE6767DABD1D3999365BB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Depreciation" xlink:label="loc_us-gaap_Depreciation_EC4C089F51BE6767DABD1D3999365BB0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Depreciation_EC4C089F51BE6767DABD1D3999365BB0" xlink:to="lab_us-gaap_Depreciation_EC4C089F51BE6767DABD1D3999365BB0" xlink:type="arc" />
    <link:label id="lab_us-gaap_TenantImprovements_737C6BF27834527B722A1D399936DC03_terseLabel_en-US" xlink:label="lab_us-gaap_TenantImprovements_737C6BF27834527B722A1D399936DC03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant improvements</link:label>
    <link:label id="lab_us-gaap_TenantImprovements_737C6BF27834527B722A1D399936DC03_label_en-US" xlink:label="lab_us-gaap_TenantImprovements_737C6BF27834527B722A1D399936DC03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tenant Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_TenantImprovements" xlink:label="loc_us-gaap_TenantImprovements_737C6BF27834527B722A1D399936DC03" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_TenantImprovements_737C6BF27834527B722A1D399936DC03" xlink:to="lab_us-gaap_TenantImprovements_737C6BF27834527B722A1D399936DC03" xlink:type="arc" />
    <link:label id="lab_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3_terseLabel_en-US" xlink:label="lab_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant improvements, depreciation expense and rental revenue</link:label>
    <link:label id="lab_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3_label_en-US" xlink:label="lab_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tenant Improvements, Depreciation and Rental Revenue</link:label>
    <link:label id="lab_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3_documentation_en-US" xlink:label="lab_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tenant Improvements, Depreciation and Rental Revenue</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TenantImprovementsDepreciationandRentalRevenue" xlink:label="loc_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3" xlink:to="lab_land_TenantImprovementsDepreciationandRentalRevenue_A86CB6AF491238BBA1C21D3999368DA3" xlink:type="arc" />
    <link:label id="lab_us-gaap_AgriculturalRelatedInventoryGrowingCrops_2852552EF702BFF7F39B13A1CF1C77F7_terseLabel_en-US" xlink:label="lab_us-gaap_AgriculturalRelatedInventoryGrowingCrops_2852552EF702BFF7F39B13A1CF1C77F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Growing costs</link:label>
    <link:label id="lab_us-gaap_AgriculturalRelatedInventoryGrowingCrops_2852552EF702BFF7F39B13A1CF1C77F7_label_en-US" xlink:label="lab_us-gaap_AgriculturalRelatedInventoryGrowingCrops_2852552EF702BFF7F39B13A1CF1C77F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Agricultural Related Inventory, Growing Crops</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgriculturalRelatedInventoryGrowingCrops" xlink:label="loc_us-gaap_AgriculturalRelatedInventoryGrowingCrops_2852552EF702BFF7F39B13A1CF1C77F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AgriculturalRelatedInventoryGrowingCrops_2852552EF702BFF7F39B13A1CF1C77F7" xlink:to="lab_us-gaap_AgriculturalRelatedInventoryGrowingCrops_2852552EF702BFF7F39B13A1CF1C77F7" xlink:type="arc" />
    <link:label id="lab_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB_terseLabel_en-US" xlink:label="lab_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Overhead costs</link:label>
    <link:label id="lab_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB_label_en-US" xlink:label="lab_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Agricultural Related Inventory, Overhead Costs</link:label>
    <link:label id="lab_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB_documentation_en-US" xlink:label="lab_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Agricultural Related Inventory, Overhead Costs</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AgriculturalRelatedInventoryOverheadCosts" xlink:label="loc_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB" xlink:to="lab_land_AgriculturalRelatedInventoryOverheadCosts_1F8E877B3BF0A3484A8113A1CF1C4BFB" xlink:type="arc" />
    <link:label id="lab_us-gaap_AgriculturalRelatedInventory_65B5B76D58F8ECEA0CA213A1CF1CF2E7_totalLabel_en-US" xlink:label="lab_us-gaap_AgriculturalRelatedInventory_65B5B76D58F8ECEA0CA213A1CF1CF2E7" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total Crop inventory</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AgriculturalRelatedInventory" xlink:label="loc_us-gaap_AgriculturalRelatedInventory_65B5B76D58F8ECEA0CA213A1CF1CF2E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AgriculturalRelatedInventory_65B5B76D58F8ECEA0CA213A1CF1CF2E7" xlink:to="lab_us-gaap_AgriculturalRelatedInventory_65B5B76D58F8ECEA0CA213A1CF1CF2E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfessionalFees_899F45E25A41A696B04713A1CF1C1E17_terseLabel_en-US" xlink:label="lab_us-gaap_ProfessionalFees_899F45E25A41A696B04713A1CF1C1E17" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Professional fees</link:label>
    <link:label id="lab_us-gaap_ProfessionalFees_899F45E25A41A696B04713A1CF1C1E17_label_en-US" xlink:label="lab_us-gaap_ProfessionalFees_899F45E25A41A696B04713A1CF1C1E17" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Professional Fees</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfessionalFees" xlink:label="loc_us-gaap_ProfessionalFees_899F45E25A41A696B04713A1CF1C1E17" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfessionalFees_899F45E25A41A696B04713A1CF1C1E17" xlink:to="lab_us-gaap_ProfessionalFees_899F45E25A41A696B04713A1CF1C1E17" xlink:type="arc" />
    <link:label id="lab_land_TenantAMember_60984765D436CD7445C5265DB010FEB2_terseLabel_en-US" xlink:label="lab_land_TenantAMember_60984765D436CD7445C5265DB010FEB2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant A</link:label>
    <link:label id="lab_land_TenantAMember_60984765D436CD7445C5265DB010FEB2_label_en-US" xlink:label="lab_land_TenantAMember_60984765D436CD7445C5265DB010FEB2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tenant A [Member]</link:label>
    <link:label id="lab_land_TenantAMember_60984765D436CD7445C5265DB010FEB2_documentation_en-US" xlink:label="lab_land_TenantAMember_60984765D436CD7445C5265DB010FEB2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tenant A [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TenantAMember" xlink:label="loc_land_TenantAMember_60984765D436CD7445C5265DB010FEB2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TenantAMember_60984765D436CD7445C5265DB010FEB2" xlink:to="lab_land_TenantAMember_60984765D436CD7445C5265DB010FEB2" xlink:type="arc" />
    <link:label id="lab_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127_terseLabel_en-US" xlink:label="lab_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of tenants</link:label>
    <link:label id="lab_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127_label_en-US" xlink:label="lab_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Tenants, Lease Properties</link:label>
    <link:label id="lab_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127_documentation_en-US" xlink:label="lab_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Tenants, Lease Properties</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberofTenantsLeaseProperties" xlink:label="loc_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127" xlink:to="lab_land_NumberofTenantsLeaseProperties_23A7A5531D9BF345B1F6265DB0122127" xlink:type="arc" />
    <link:label id="lab_land_NumberOfRealEstateFarms_5717639374A4A7897852265DB0129F70_netLabel_en-US" xlink:label="lab_land_NumberOfRealEstateFarms_5717639374A4A7897852265DB0129F70" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Number of farms</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfRealEstateFarms" xlink:label="loc_land_NumberOfRealEstateFarms_5717639374A4A7897852265DB0129F70" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfRealEstateFarms_5717639374A4A7897852265DB0129F70" xlink:to="lab_land_NumberOfRealEstateFarms_5717639374A4A7897852265DB0129F70" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F_verboseLabel_en-US" xlink:label="lab_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">% of Total Rental Revenue</link:label>
    <link:label id="lab_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F_label_en-US" xlink:label="lab_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Rental Revenue</link:label>
    <link:label id="lab_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F_documentation_en-US" xlink:label="lab_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of rental revenue.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfRentalRevenue" xlink:label="loc_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F" xlink:to="lab_land_PercentageOfRentalRevenue_A5DD97778A3B58D6F6DD265DB0127B9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_89A5BB3F39AABC6035C82750A46D55E7_terseLabel_en-US" xlink:label="lab_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_89A5BB3F39AABC6035C82750A46D55E7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sale of Stock [Table]</link:label>
    <link:label id="lab_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_89A5BB3F39AABC6035C82750A46D55E7_label_en-US" xlink:label="lab_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_89A5BB3F39AABC6035C82750A46D55E7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsidiary or Equity Method Investee, Sale of Stock by Subsidiary or Equity Investee [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable" xlink:label="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_89A5BB3F39AABC6035C82750A46D55E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_89A5BB3F39AABC6035C82750A46D55E7" xlink:to="lab_us-gaap_SubsidiaryOrEquityMethodInvesteeSaleOfStockBySubsidiaryOrEquityInvesteeTable_89A5BB3F39AABC6035C82750A46D55E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsidiarySaleOfStockLineItems_5670E08F8DF8B520BCB52750A473CB10_terseLabel_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockLineItems_5670E08F8DF8B520BCB52750A473CB10" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sale of Stock [Line Items]</link:label>
    <link:label id="lab_us-gaap_SubsidiarySaleOfStockLineItems_5670E08F8DF8B520BCB52750A473CB10_label_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockLineItems_5670E08F8DF8B520BCB52750A473CB10" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsidiary, Sale of Stock [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsidiarySaleOfStockLineItems" xlink:label="loc_us-gaap_SubsidiarySaleOfStockLineItems_5670E08F8DF8B520BCB52750A473CB10" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsidiarySaleOfStockLineItems_5670E08F8DF8B520BCB52750A473CB10" xlink:to="lab_us-gaap_SubsidiarySaleOfStockLineItems_5670E08F8DF8B520BCB52750A473CB10" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockDividendRatePercentage_A24D5F39C84668988D882750A474824C_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendRatePercentage_A24D5F39C84668988D882750A474824C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, dividend rate (as percent)</link:label>
    <link:label id="lab_us-gaap_PreferredStockDividendRatePercentage_A24D5F39C84668988D882750A474824C_label_en-US" xlink:label="lab_us-gaap_PreferredStockDividendRatePercentage_A24D5F39C84668988D882750A474824C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Dividend Rate, Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockDividendRatePercentage" xlink:label="loc_us-gaap_PreferredStockDividendRatePercentage_A24D5F39C84668988D882750A474824C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockDividendRatePercentage_A24D5F39C84668988D882750A474824C" xlink:to="lab_us-gaap_PreferredStockDividendRatePercentage_A24D5F39C84668988D882750A474824C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_AA0200DFC5F86B6162C72750A47560EF_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_AA0200DFC5F86B6162C72750A47560EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, par value (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_PreferredStockParOrStatedValuePerShare_AA0200DFC5F86B6162C72750A47560EF_label_en-US" xlink:label="lab_us-gaap_PreferredStockParOrStatedValuePerShare_AA0200DFC5F86B6162C72750A47560EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_PreferredStockParOrStatedValuePerShare_AA0200DFC5F86B6162C72750A47560EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockParOrStatedValuePerShare_AA0200DFC5F86B6162C72750A47560EF" xlink:to="lab_us-gaap_PreferredStockParOrStatedValuePerShare_AA0200DFC5F86B6162C72750A47560EF" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharesIssuedPricePerShare_2E05D1A0DB94796D12DA2750A4763C49_terseLabel_en-US" xlink:label="lab_us-gaap_SharesIssuedPricePerShare_2E05D1A0DB94796D12DA2750A4763C49" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Public offering price (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_SharesIssuedPricePerShare_2E05D1A0DB94796D12DA2750A4763C49_label_en-US" xlink:label="lab_us-gaap_SharesIssuedPricePerShare_2E05D1A0DB94796D12DA2750A4763C49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Shares Issued, Price Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesIssuedPricePerShare" xlink:label="loc_us-gaap_SharesIssuedPricePerShare_2E05D1A0DB94796D12DA2750A4763C49" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesIssuedPricePerShare_2E05D1A0DB94796D12DA2750A4763C49" xlink:to="lab_us-gaap_SharesIssuedPricePerShare_2E05D1A0DB94796D12DA2750A4763C49" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesIssued_C0EA3BF4DA3CFFDAB78C2750A477EA8B_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_C0EA3BF4DA3CFFDAB78C2750A477EA8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares issued (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesIssued_C0EA3BF4DA3CFFDAB78C2750A477EA8B_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesIssued_C0EA3BF4DA3CFFDAB78C2750A477EA8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares, Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesIssued" xlink:label="loc_us-gaap_CommonStockSharesIssued_C0EA3BF4DA3CFFDAB78C2750A477EA8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesIssued_C0EA3BF4DA3CFFDAB78C2750A477EA8B" xlink:to="lab_us-gaap_CommonStockSharesIssued_C0EA3BF4DA3CFFDAB78C2750A477EA8B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_2AB541C261B4C158DC7C2750A478DD8E_verboseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_2AB541C261B4C158DC7C2750A478DD8E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from issuance of mandatorily-redeemable preferred stock</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_2AB541C261B4C158DC7C2750A478DD8E_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_2AB541C261B4C158DC7C2750A478DD8E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Preferred Stock and Preference Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_2AB541C261B4C158DC7C2750A478DD8E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_2AB541C261B4C158DC7C2750A478DD8E" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_2AB541C261B4C158DC7C2750A478DD8E" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_9B82D7A97DFB18DD32C22750A47B3B09_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_9B82D7A97DFB18DD32C22750A47B3B09" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from issuance of preferred and common equity</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_9B82D7A97DFB18DD32C22750A47B3B09_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_9B82D7A97DFB18DD32C22750A47B3B09" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance or Sale of Equity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOrSaleOfEquity" xlink:label="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_9B82D7A97DFB18DD32C22750A47B3B09" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_9B82D7A97DFB18DD32C22750A47B3B09" xlink:to="lab_us-gaap_ProceedsFromIssuanceOrSaleOfEquity_9B82D7A97DFB18DD32C22750A47B3B09" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockRedemptionPricePerShare_019D68F612B8C3A5595B2750A47B9F87_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockRedemptionPricePerShare_019D68F612B8C3A5595B2750A47B9F87" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption price of redeemable preferred stock (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_PreferredStockRedemptionPricePerShare_019D68F612B8C3A5595B2750A47B9F87_label_en-US" xlink:label="lab_us-gaap_PreferredStockRedemptionPricePerShare_019D68F612B8C3A5595B2750A47B9F87" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Redemption Price Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockRedemptionPricePerShare" xlink:label="loc_us-gaap_PreferredStockRedemptionPricePerShare_019D68F612B8C3A5595B2750A47B9F87" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockRedemptionPricePerShare_019D68F612B8C3A5595B2750A47B9F87" xlink:to="lab_us-gaap_PreferredStockRedemptionPricePerShare_019D68F612B8C3A5595B2750A47B9F87" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfStockIssuanceCosts_97BBB7ADC98203B68ECE2750A47C6927_verboseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfStockIssuanceCosts_97BBB7ADC98203B68ECE2750A47C6927" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Payments of legal costs</link:label>
    <link:label id="lab_us-gaap_PaymentsOfStockIssuanceCosts_97BBB7ADC98203B68ECE2750A47C6927_label_en-US" xlink:label="lab_us-gaap_PaymentsOfStockIssuanceCosts_97BBB7ADC98203B68ECE2750A47C6927" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Stock Issuance Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_97BBB7ADC98203B68ECE2750A47C6927" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfStockIssuanceCosts_97BBB7ADC98203B68ECE2750A47C6927" xlink:to="lab_us-gaap_PaymentsOfStockIssuanceCosts_97BBB7ADC98203B68ECE2750A47C6927" xlink:type="arc" />
    <link:label id="lab_us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure_3CB037C5F43E83E647142750A47C94E6_terseLabel_en-US" xlink:label="lab_us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure_3CB037C5F43E83E647142750A47C94E6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Term preferred stock, fair value</link:label>
    <link:label id="lab_us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure_3CB037C5F43E83E647142750A47C94E6_label_en-US" xlink:label="lab_us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure_3CB037C5F43E83E647142750A47C94E6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Mandatorily Redeemable Preferred Stock, Fair Value Disclosure</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure" xlink:label="loc_us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure_3CB037C5F43E83E647142750A47C94E6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure_3CB037C5F43E83E647142750A47C94E6" xlink:to="lab_us-gaap_MandatorilyRedeemablePreferredStockFairValueDisclosure_3CB037C5F43E83E647142750A47C94E6" xlink:type="arc" />
    <link:label id="lab_srt_MinimumMember_70F6E6BAED251CF76E6E2807916AFCD4_terseLabel_en-US" xlink:label="lab_srt_MinimumMember_70F6E6BAED251CF76E6E2807916AFCD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum</link:label>
    <link:label id="lab_srt_MinimumMember_70F6E6BAED251CF76E6E2807916AFCD4_label_en-US" xlink:label="lab_srt_MinimumMember_70F6E6BAED251CF76E6E2807916AFCD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Minimum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MinimumMember" xlink:label="loc_srt_MinimumMember_70F6E6BAED251CF76E6E2807916AFCD4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MinimumMember_70F6E6BAED251CF76E6E2807916AFCD4" xlink:to="lab_srt_MinimumMember_70F6E6BAED251CF76E6E2807916AFCD4" xlink:type="arc" />
    <link:label id="lab_srt_MaximumMember_54EAE93167BB2D8D36CF2807916A913C_terseLabel_en-US" xlink:label="lab_srt_MaximumMember_54EAE93167BB2D8D36CF2807916A913C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum</link:label>
    <link:label id="lab_srt_MaximumMember_54EAE93167BB2D8D36CF2807916A913C_label_en-US" xlink:label="lab_srt_MaximumMember_54EAE93167BB2D8D36CF2807916A913C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_MaximumMember" xlink:label="loc_srt_MaximumMember_54EAE93167BB2D8D36CF2807916A913C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_MaximumMember_54EAE93167BB2D8D36CF2807916A913C" xlink:to="lab_srt_MaximumMember_54EAE93167BB2D8D36CF2807916A913C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_7C3B2B1D07519F4825362807916A7A2B_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_7C3B2B1D07519F4825362807916A7A2B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeAxis_7C3B2B1D07519F4825362807916A7A2B_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeAxis_7C3B2B1D07519F4825362807916A7A2B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeAxis" xlink:label="loc_us-gaap_LongtermDebtTypeAxis_7C3B2B1D07519F4825362807916A7A2B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeAxis_7C3B2B1D07519F4825362807916A7A2B" xlink:to="lab_us-gaap_LongtermDebtTypeAxis_7C3B2B1D07519F4825362807916A7A2B" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_E40EBEF9C823CD54C88C2807916A86A2_terseLabel_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_E40EBEF9C823CD54C88C2807916A86A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_LongtermDebtTypeDomain_E40EBEF9C823CD54C88C2807916A86A2_label_en-US" xlink:label="lab_us-gaap_LongtermDebtTypeDomain_E40EBEF9C823CD54C88C2807916A86A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongtermDebtTypeDomain" xlink:label="loc_us-gaap_LongtermDebtTypeDomain_E40EBEF9C823CD54C88C2807916A86A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongtermDebtTypeDomain_E40EBEF9C823CD54C88C2807916A86A2" xlink:to="lab_us-gaap_LongtermDebtTypeDomain_E40EBEF9C823CD54C88C2807916A86A2" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotesPayableToBanksMember_7BCABC93EE61F8F349D22807916A4378_verboseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableToBanksMember_7BCABC93EE61F8F349D22807916A4378" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notes payable to bank</link:label>
    <link:label id="lab_us-gaap_NotesPayableToBanksMember_7BCABC93EE61F8F349D22807916A4378_label_en-US" xlink:label="lab_us-gaap_NotesPayableToBanksMember_7BCABC93EE61F8F349D22807916A4378" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notes Payable to Banks [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableToBanksMember" xlink:label="loc_us-gaap_NotesPayableToBanksMember_7BCABC93EE61F8F349D22807916A4378" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableToBanksMember_7BCABC93EE61F8F349D22807916A4378" xlink:to="lab_us-gaap_NotesPayableToBanksMember_7BCABC93EE61F8F349D22807916A4378" xlink:type="arc" />
    <link:label id="lab_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E_terseLabel_en-US" xlink:label="lab_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">MetLife Term Loans</link:label>
    <link:label id="lab_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E_label_en-US" xlink:label="lab_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Metlife Term Loans [Member]</link:label>
    <link:label id="lab_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E_documentation_en-US" xlink:label="lab_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Metlife Term Loans [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MetlifeTermLoansMember" xlink:label="loc_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E" xlink:to="lab_land_MetlifeTermLoansMember_001A1AACE69D55D22E812807916AEF7E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_FC618C2816A932C159EB2807916AD8AE_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_FC618C2816A932C159EB2807916AD8AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Principal Outstanding</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_FC618C2816A932C159EB2807916AD8AE_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_FC618C2816A932C159EB2807916AD8AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_FC618C2816A932C159EB2807916AD8AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_FC618C2816A932C159EB2807916AD8AE" xlink:to="lab_us-gaap_DebtInstrumentCarryingAmount_FC618C2816A932C159EB2807916AD8AE" xlink:type="arc" />
    <link:label id="lab_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA_terseLabel_en-US" xlink:label="lab_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt instrument, loans to value ratios percentage</link:label>
    <link:label id="lab_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA_label_en-US" xlink:label="lab_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Loans To Value Ratios Percentage</link:label>
    <link:label id="lab_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA_documentation_en-US" xlink:label="lab_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Loans To Value Ratios Percentage</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtInstrumentLoansToValueRatiosPercentage" xlink:label="loc_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA" xlink:to="lab_land_DebtInstrumentLoansToValueRatiosPercentage_966478BAD3E2304029302807916ACBCA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_95632FF52BDCB2F212091FBE47BE9917_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_95632FF52BDCB2F212091FBE47BE9917" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Business Acquisitions, by Acquisition [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_95632FF52BDCB2F212091FBE47BE9917_label_en-US" xlink:label="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_95632FF52BDCB2F212091FBE47BE9917" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Business Acquisitions, by Acquisition [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable" xlink:label="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_95632FF52BDCB2F212091FBE47BE9917" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_95632FF52BDCB2F212091FBE47BE9917" xlink:to="lab_us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_95632FF52BDCB2F212091FBE47BE9917" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B5929F373B96EB9285421FBE47BF3A88_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B5929F373B96EB9285421FBE47BF3A88" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B5929F373B96EB9285421FBE47BF3A88_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B5929F373B96EB9285421FBE47BF3A88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentByTypeAxis" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B5929F373B96EB9285421FBE47BF3A88" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B5929F373B96EB9285421FBE47BF3A88" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentByTypeAxis_B5929F373B96EB9285421FBE47BF3A88" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_7B21781DF913717AE6121FBE47C01C19_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_7B21781DF913717AE6121FBE47C01C19" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_7B21781DF913717AE6121FBE47C01C19_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_7B21781DF913717AE6121FBE47C01C19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentTypeDomain" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7B21781DF913717AE6121FBE47C01C19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentTypeDomain_7B21781DF913717AE6121FBE47C01C19" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentTypeDomain_7B21781DF913717AE6121FBE47C01C19" xlink:type="arc" />
    <link:label id="lab_us-gaap_LandAndLandImprovementsMember_AE53628374889884F4E91FBE47C09005_verboseLabel_en-US" xlink:label="lab_us-gaap_LandAndLandImprovementsMember_AE53628374889884F4E91FBE47C09005" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Land and Land Improvements</link:label>
    <link:label id="lab_us-gaap_LandAndLandImprovementsMember_AE53628374889884F4E91FBE47C09005_label_en-US" xlink:label="lab_us-gaap_LandAndLandImprovementsMember_AE53628374889884F4E91FBE47C09005" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land and Land Improvements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandAndLandImprovementsMember" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_AE53628374889884F4E91FBE47C09005" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandAndLandImprovementsMember_AE53628374889884F4E91FBE47C09005" xlink:to="lab_us-gaap_LandAndLandImprovementsMember_AE53628374889884F4E91FBE47C09005" xlink:type="arc" />
    <link:label id="lab_us-gaap_BuildingMember_F022EBCDB6F61D8BF5D91FBE47C0F696_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingMember_F022EBCDB6F61D8BF5D91FBE47C0F696" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm-related Facilities</link:label>
    <link:label id="lab_us-gaap_BuildingMember_F022EBCDB6F61D8BF5D91FBE47C0F696_label_en-US" xlink:label="lab_us-gaap_BuildingMember_F022EBCDB6F61D8BF5D91FBE47C0F696" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Building [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BuildingMember" xlink:label="loc_us-gaap_BuildingMember_F022EBCDB6F61D8BF5D91FBE47C0F696" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BuildingMember_F022EBCDB6F61D8BF5D91FBE47C0F696" xlink:to="lab_us-gaap_BuildingMember_F022EBCDB6F61D8BF5D91FBE47C0F696" xlink:type="arc" />
    <link:label id="lab_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A_terseLabel_en-US" xlink:label="lab_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Irrigation Systems</link:label>
    <link:label id="lab_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A_label_en-US" xlink:label="lab_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Irrigation System [Member]</link:label>
    <link:label id="lab_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A_documentation_en-US" xlink:label="lab_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Irrigation system.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_IrrigationSystemMember" xlink:label="loc_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A" xlink:to="lab_land_IrrigationSystemMember_B234CEEF613848D515681FBE47C62C6A" xlink:type="arc" />
    <link:label id="lab_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21_terseLabel_en-US" xlink:label="lab_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Horticulture</link:label>
    <link:label id="lab_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21_label_en-US" xlink:label="lab_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Horticulture [Member]</link:label>
    <link:label id="lab_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21_documentation_en-US" xlink:label="lab_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Horticulture [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HorticultureMember" xlink:label="loc_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21" xlink:to="lab_land_HorticultureMember_79AD64FD222FC52AFE4E1FBE47C70C21" xlink:type="arc" />
    <link:label id="lab_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E_terseLabel_en-US" xlink:label="lab_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Improvements</link:label>
    <link:label id="lab_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E_label_en-US" xlink:label="lab_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Improvements [Member]</link:label>
    <link:label id="lab_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E_documentation_en-US" xlink:label="lab_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other Improvements [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OtherImprovementsMember" xlink:label="loc_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E" xlink:to="lab_land_OtherImprovementsMember_552AA43479FA7A95A1761FBE47C6F31E" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeaseAgreementsMember_2E035B67060372F30A9C1FBE47C7F875_verboseLabel_en-US" xlink:label="lab_us-gaap_LeaseAgreementsMember_2E035B67060372F30A9C1FBE47C7F875" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Leasehold Interest &#8211; Land</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeaseAgreementsMember" xlink:label="loc_us-gaap_LeaseAgreementsMember_2E035B67060372F30A9C1FBE47C7F875" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeaseAgreementsMember_2E035B67060372F30A9C1FBE47C7F875" xlink:to="lab_us-gaap_LeaseAgreementsMember_2E035B67060372F30A9C1FBE47C7F875" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeasesAcquiredInPlaceMember_38421C44CC86836216B11FBE47C75D0B_verboseLabel_en-US" xlink:label="lab_us-gaap_LeasesAcquiredInPlaceMember_38421C44CC86836216B11FBE47C75D0B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">In-place Leases</link:label>
    <link:label id="lab_us-gaap_LeasesAcquiredInPlaceMember_38421C44CC86836216B11FBE47C75D0B_label_en-US" xlink:label="lab_us-gaap_LeasesAcquiredInPlaceMember_38421C44CC86836216B11FBE47C75D0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leases, Acquired-in-Place [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeasesAcquiredInPlaceMember" xlink:label="loc_us-gaap_LeasesAcquiredInPlaceMember_38421C44CC86836216B11FBE47C75D0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeasesAcquiredInPlaceMember_38421C44CC86836216B11FBE47C75D0B" xlink:to="lab_us-gaap_LeasesAcquiredInPlaceMember_38421C44CC86836216B11FBE47C75D0B" xlink:type="arc" />
    <link:label id="lab_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E_terseLabel_en-US" xlink:label="lab_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Leasing Costs</link:label>
    <link:label id="lab_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E_label_en-US" xlink:label="lab_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Leasing Costs [Member]</link:label>
    <link:label id="lab_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E_documentation_en-US" xlink:label="lab_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Leasing cost.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeasingCostsMember" xlink:label="loc_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E" xlink:to="lab_land_LeasingCostsMember_1E53172F7AC8346874701FBE47C7FA9E" xlink:type="arc" />
    <link:label id="lab_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF_terseLabel_en-US" xlink:label="lab_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net Below-Market Leases</link:label>
    <link:label id="lab_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF_label_en-US" xlink:label="lab_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Above And Below Market Leases [Member]</link:label>
    <link:label id="lab_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF_documentation_en-US" xlink:label="lab_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Above And Below Market Leases [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AboveAndBelowMarketLeasesMember" xlink:label="loc_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF" xlink:to="lab_land_AboveAndBelowMarketLeasesMember_6FF5C77692D32FE131F81FBE47C741AF" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionLineItems_DC14D535C966FA2A51811FBE47C88C54_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_DC14D535C966FA2A51811FBE47C88C54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition [Line Items]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionLineItems_DC14D535C966FA2A51811FBE47C88C54_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_DC14D535C966FA2A51811FBE47C88C54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionLineItems" xlink:label="loc_us-gaap_BusinessAcquisitionLineItems_DC14D535C966FA2A51811FBE47C88C54" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionLineItems_DC14D535C966FA2A51811FBE47C88C54" xlink:to="lab_us-gaap_BusinessAcquisitionLineItems_DC14D535C966FA2A51811FBE47C88C54" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_E71FAEA45914FDC555321FBE47C8D682_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_E71FAEA45914FDC555321FBE47C8D682" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total purchase price</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_E71FAEA45914FDC555321FBE47C8D682_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_E71FAEA45914FDC555321FBE47C8D682" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet" xlink:label="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_E71FAEA45914FDC555321FBE47C8D682" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_E71FAEA45914FDC555321FBE47C8D682" xlink:to="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet_E71FAEA45914FDC555321FBE47C8D682" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_081094A81A3D61CE1E2E11B4EED6F80C_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_081094A81A3D61CE1E2E11B4EED6F80C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_081094A81A3D61CE1E2E11B4EED6F80C_label_en-US" xlink:label="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_081094A81A3D61CE1E2E11B4EED6F80C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable" xlink:label="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_081094A81A3D61CE1E2E11B4EED6F80C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_081094A81A3D61CE1E2E11B4EED6F80C" xlink:to="lab_us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_081094A81A3D61CE1E2E11B4EED6F80C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LeasesAcquiredInPlaceMember_1004A49B63CBB0A3C15111B4EED86AB5_terseLabel_en-US" xlink:label="lab_us-gaap_LeasesAcquiredInPlaceMember_1004A49B63CBB0A3C15111B4EED86AB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">In-place leases</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LeasesAcquiredInPlaceMember" xlink:label="loc_us-gaap_LeasesAcquiredInPlaceMember_1004A49B63CBB0A3C15111B4EED86AB5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LeasesAcquiredInPlaceMember_1004A49B63CBB0A3C15111B4EED86AB5" xlink:to="lab_us-gaap_LeasesAcquiredInPlaceMember_1004A49B63CBB0A3C15111B4EED86AB5" xlink:type="arc" />
    <link:label id="lab_land_LeasingCostsMember_560143E3F06D09D09DE011B4EED8A2F3_verboseLabel_en-US" xlink:label="lab_land_LeasingCostsMember_560143E3F06D09D09DE011B4EED8A2F3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Leasing costs</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeasingCostsMember" xlink:label="loc_land_LeasingCostsMember_560143E3F06D09D09DE011B4EED8A2F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeasingCostsMember_560143E3F06D09D09DE011B4EED8A2F3" xlink:to="lab_land_LeasingCostsMember_560143E3F06D09D09DE011B4EED8A2F3" xlink:type="arc" />
    <link:label id="lab_us-gaap_AboveMarketLeasesMember_4EF1492BB75D519B0F9711B4EED86C05_terseLabel_en-US" xlink:label="lab_us-gaap_AboveMarketLeasesMember_4EF1492BB75D519B0F9711B4EED86C05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Above-market lease values and lease incentives</link:label>
    <link:label id="lab_us-gaap_AboveMarketLeasesMember_4EF1492BB75D519B0F9711B4EED86C05_label_en-US" xlink:label="lab_us-gaap_AboveMarketLeasesMember_4EF1492BB75D519B0F9711B4EED86C05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Above Market Leases [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AboveMarketLeasesMember" xlink:label="loc_us-gaap_AboveMarketLeasesMember_4EF1492BB75D519B0F9711B4EED86C05" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AboveMarketLeasesMember_4EF1492BB75D519B0F9711B4EED86C05" xlink:to="lab_us-gaap_AboveMarketLeasesMember_4EF1492BB75D519B0F9711B4EED86C05" xlink:type="arc" />
    <link:label id="lab_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF_terseLabel_en-US" xlink:label="lab_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Below-market lease values and other deferred revenues</link:label>
    <link:label id="lab_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF_label_en-US" xlink:label="lab_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Below Market Leases And Deferred Revenue [Member]</link:label>
    <link:label id="lab_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF_documentation_en-US" xlink:label="lab_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Below Market Leases And Deferred Revenue [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BelowMarketLeasesAndDeferredRevenueMember" xlink:label="loc_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF" xlink:to="lab_land_BelowMarketLeasesAndDeferredRevenueMember_03FD58B6C7C2AA56920A11B4EED843DF" xlink:type="arc" />
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0E38C2E7456AD5BCE80911B4EED83F02_terseLabel_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0E38C2E7456AD5BCE80911B4EED83F02" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquired Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0E38C2E7456AD5BCE80911B4EED83F02_label_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0E38C2E7456AD5BCE80911B4EED83F02" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0E38C2E7456AD5BCE80911B4EED83F02" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0E38C2E7456AD5BCE80911B4EED83F02" xlink:to="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_0E38C2E7456AD5BCE80911B4EED83F02" xlink:type="arc" />
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_CE797BF5E210A6EE83E811B4EEDDA40E_terseLabel_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_CE797BF5E210A6EE83E811B4EEDDA40E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">All intangible assets and liabilities</link:label>
    <link:label id="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_CE797BF5E210A6EE83E811B4EEDDA40E_label_en-US" xlink:label="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_CE797BF5E210A6EE83E811B4EEDDA40E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquired Finite-lived Intangible Assets, Weighted Average Useful Life</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife" xlink:label="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_CE797BF5E210A6EE83E811B4EEDDA40E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_CE797BF5E210A6EE83E811B4EEDDA40E" xlink:to="lab_us-gaap_AcquiredFiniteLivedIntangibleAssetsWeightedAverageUsefulLife_CE797BF5E210A6EE83E811B4EEDDA40E" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8B23269314A7EC9200E72AE0F3CA01DA_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8B23269314A7EC9200E72AE0F3CA01DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party [Axis]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8B23269314A7EC9200E72AE0F3CA01DA_label_en-US" xlink:label="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8B23269314A7EC9200E72AE0F3CA01DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyTransactionsByRelatedPartyAxis" xlink:label="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8B23269314A7EC9200E72AE0F3CA01DA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8B23269314A7EC9200E72AE0F3CA01DA" xlink:to="lab_us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_8B23269314A7EC9200E72AE0F3CA01DA" xlink:type="arc" />
    <link:label id="lab_us-gaap_RelatedPartyDomain_E491B252C3ECA30266842AE0F3CA5804_terseLabel_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_E491B252C3ECA30266842AE0F3CA5804" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Related Party [Domain]</link:label>
    <link:label id="lab_us-gaap_RelatedPartyDomain_E491B252C3ECA30266842AE0F3CA5804_label_en-US" xlink:label="lab_us-gaap_RelatedPartyDomain_E491B252C3ECA30266842AE0F3CA5804" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RelatedPartyDomain" xlink:label="loc_us-gaap_RelatedPartyDomain_E491B252C3ECA30266842AE0F3CA5804" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RelatedPartyDomain_E491B252C3ECA30266842AE0F3CA5804" xlink:to="lab_us-gaap_RelatedPartyDomain_E491B252C3ECA30266842AE0F3CA5804" xlink:type="arc" />
    <link:label id="lab_srt_AffiliatedEntityMember_BB17FDCC121D917C76D72AE0F3CA91F3_terseLabel_en-US" xlink:label="lab_srt_AffiliatedEntityMember_BB17FDCC121D917C76D72AE0F3CA91F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Affiliate</link:label>
    <link:label id="lab_srt_AffiliatedEntityMember_BB17FDCC121D917C76D72AE0F3CA91F3_label_en-US" xlink:label="lab_srt_AffiliatedEntityMember_BB17FDCC121D917C76D72AE0F3CA91F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Affiliated Entity [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_AffiliatedEntityMember" xlink:label="loc_srt_AffiliatedEntityMember_BB17FDCC121D917C76D72AE0F3CA91F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_AffiliatedEntityMember_BB17FDCC121D917C76D72AE0F3CA91F3" xlink:to="lab_srt_AffiliatedEntityMember_BB17FDCC121D917C76D72AE0F3CA91F3" xlink:type="arc" />
    <link:label id="lab_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65_terseLabel_en-US" xlink:label="lab_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gladstone Securities</link:label>
    <link:label id="lab_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65_label_en-US" xlink:label="lab_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gladstone Securities [Member]</link:label>
    <link:label id="lab_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65_documentation_en-US" xlink:label="lab_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gladstone Securities [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_GladstoneSecuritiesMember" xlink:label="loc_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65" xlink:to="lab_land_GladstoneSecuritiesMember_897A42D3C59C390529C72AE0F3CB4E65" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncentiveFeeExpense_33D0EE2D4195DE4B2D972AE0F3CF1F92_verboseLabel_en-US" xlink:label="lab_us-gaap_IncentiveFeeExpense_33D0EE2D4195DE4B2D972AE0F3CF1F92" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Incentive fee</link:label>
    <link:label id="lab_us-gaap_IncentiveFeeExpense_33D0EE2D4195DE4B2D972AE0F3CF1F92_label_en-US" xlink:label="lab_us-gaap_IncentiveFeeExpense_33D0EE2D4195DE4B2D972AE0F3CF1F92" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incentive Fee Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncentiveFeeExpense" xlink:label="loc_us-gaap_IncentiveFeeExpense_33D0EE2D4195DE4B2D972AE0F3CF1F92" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncentiveFeeExpense_33D0EE2D4195DE4B2D972AE0F3CF1F92" xlink:to="lab_us-gaap_IncentiveFeeExpense_33D0EE2D4195DE4B2D972AE0F3CF1F92" xlink:type="arc" />
    <link:label id="lab_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC_terseLabel_en-US" xlink:label="lab_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital gains fee</link:label>
    <link:label id="lab_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC_label_en-US" xlink:label="lab_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Gains Fee</link:label>
    <link:label id="lab_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC_documentation_en-US" xlink:label="lab_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capital Gains Fee</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CapitalGainsFee" xlink:label="loc_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC" xlink:to="lab_land_CapitalGainsFee_EE3A6CAEFDA8D3BD5AA32AE0F3CF65EC" xlink:type="arc" />
    <link:label id="lab_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990_negatedLabel_en-US" xlink:label="lab_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Credits to fees from Adviser</link:label>
    <link:label id="lab_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990_label_en-US" xlink:label="lab_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credits To Fees From Adviser</link:label>
    <link:label id="lab_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990_documentation_en-US" xlink:label="lab_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credits to fees from adviser.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CreditsToFeesFromAdviser" xlink:label="loc_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990" xlink:to="lab_land_CreditsToFeesFromAdviser_17EE99CB212DEC13FB412AE0F3CF4990" xlink:type="arc" />
    <link:label id="lab_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411_totalLabel_en-US" xlink:label="lab_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total fees to our Adviser, net</link:label>
    <link:label id="lab_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411_label_en-US" xlink:label="lab_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Related Party Transaction Net Incentive Fees Paid And Credits Received</link:label>
    <link:label id="lab_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411_documentation_en-US" xlink:label="lab_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Related party transaction net incentive fees paid and credits received.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived" xlink:label="loc_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411" xlink:to="lab_land_RelatedPartyTransactionNetIncentiveFeesPaidAndCreditsReceived_280BBADA2CA3B65A2E952AE0F3D00411" xlink:type="arc" />
    <link:label id="lab_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2_verboseLabel_en-US" xlink:label="lab_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Administration fee</link:label>
    <link:label id="lab_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2_label_en-US" xlink:label="lab_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Administration Fee</link:label>
    <link:label id="lab_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2_documentation_en-US" xlink:label="lab_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Administration fee.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AdministrationFee" xlink:label="loc_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2" xlink:to="lab_land_AdministrationFee_46A86BAEF4D0E007633C2AE0F3D076B2" xlink:type="arc" />
    <link:label id="lab_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC_negatedTerseLabel_en-US" xlink:label="lab_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Payment of management fees</link:label>
    <link:label id="lab_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC_label_en-US" xlink:label="lab_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payment of Management Fees</link:label>
    <link:label id="lab_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC_documentation_en-US" xlink:label="lab_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payment of Management Fees</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PaymentofManagementFees" xlink:label="loc_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC" xlink:to="lab_land_PaymentofManagementFees_57D78C3D99052493F41D2AE0F3D193FC" xlink:type="arc" />
    <link:label id="lab_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4_terseLabel_en-US" xlink:label="lab_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing fee</link:label>
    <link:label id="lab_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4_label_en-US" xlink:label="lab_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Fee</link:label>
    <link:label id="lab_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4_documentation_en-US" xlink:label="lab_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Fee</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FinancingFee" xlink:label="loc_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4" xlink:to="lab_land_FinancingFee_E203B2A69D482D3D5D2E2AE0F3D007E4" xlink:type="arc" />
    <link:label id="lab_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5_totalLabel_en-US" xlink:label="lab_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total fees to Gladstone Securities</link:label>
    <link:label id="lab_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5_label_en-US" xlink:label="lab_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Management Fees and Financing Fees</link:label>
    <link:label id="lab_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5_documentation_en-US" xlink:label="lab_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Management Fees and Financing Fees</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ManagementFeesandFinancingFees" xlink:label="loc_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5" xlink:to="lab_land_ManagementFeesandFinancingFees_378A6B2D9C913C0B887D2AE0F3D015F5" xlink:type="arc" />
    <link:label id="lab_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0_terseLabel_en-US" xlink:label="lab_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allocation of overhead costs</link:label>
    <link:label id="lab_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0_label_en-US" xlink:label="lab_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Agricultural Related Inventory, Allocation Of Overhead Costs</link:label>
    <link:label id="lab_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0_documentation_en-US" xlink:label="lab_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Agricultural Related Inventory, Allocation Of Overhead Costs</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AgriculturalRelatedInventoryAllocationOfOverheadCosts" xlink:label="loc_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0" xlink:to="lab_land_AgriculturalRelatedInventoryAllocationOfOverheadCosts_D9251FCC9BC0D1568DE12AE0F3D02DF0" xlink:type="arc" />
    <link:label id="lab_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216_terseLabel_en-US" xlink:label="lab_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing fees as a percent of total financings secured</link:label>
    <link:label id="lab_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216_label_en-US" xlink:label="lab_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Fees As Percentage Of Total Financings Secured</link:label>
    <link:label id="lab_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216_documentation_en-US" xlink:label="lab_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing Fees As Percentage Of Total Financings Secured</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FinancingFeesAsPercentageOfTotalFinancingsSecured" xlink:label="loc_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216" xlink:to="lab_land_FinancingFeesAsPercentageOfTotalFinancingsSecured_9793112A0A6C1AC1872B2AE0F3D19216" xlink:type="arc" />
    <link:label id="lab_us-gaap_NotesPayableToBanksMember_1921DF930E14A03C6AED20CFE9E688DD_terseLabel_en-US" xlink:label="lab_us-gaap_NotesPayableToBanksMember_1921DF930E14A03C6AED20CFE9E688DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Notes payable to bank</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NotesPayableToBanksMember" xlink:label="loc_us-gaap_NotesPayableToBanksMember_1921DF930E14A03C6AED20CFE9E688DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NotesPayableToBanksMember_1921DF930E14A03C6AED20CFE9E688DD" xlink:to="lab_us-gaap_NotesPayableToBanksMember_1921DF930E14A03C6AED20CFE9E688DD" xlink:type="arc" />
    <link:label id="lab_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497_terseLabel_en-US" xlink:label="lab_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term mortgage notes and bonds payable</link:label>
    <link:label id="lab_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497_label_en-US" xlink:label="lab_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short Term Mortgage Notes And Bonds Payable [Member]</link:label>
    <link:label id="lab_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497_documentation_en-US" xlink:label="lab_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Short term mortgage notes and bonds payable.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ShortTermMortgageNotesAndBondsPayableMember" xlink:label="loc_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497" xlink:to="lab_land_ShortTermMortgageNotesAndBondsPayableMember_B3AEE570264C9732624020CFE9E76497" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtFairValue_9407F7499BA78A1CF2D620CFE9E71D96_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_9407F7499BA78A1CF2D620CFE9E71D96" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, fair value</link:label>
    <link:label id="lab_us-gaap_LongTermDebtFairValue_9407F7499BA78A1CF2D620CFE9E71D96_label_en-US" xlink:label="lab_us-gaap_LongTermDebtFairValue_9407F7499BA78A1CF2D620CFE9E71D96" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Fair Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtFairValue" xlink:label="loc_us-gaap_LongTermDebtFairValue_9407F7499BA78A1CF2D620CFE9E71D96" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtFairValue_9407F7499BA78A1CF2D620CFE9E71D96" xlink:to="lab_us-gaap_LongTermDebtFairValue_9407F7499BA78A1CF2D620CFE9E71D96" xlink:type="arc" />
    <link:label id="lab_us-gaap_SecuredDebt_9A8CA0C292E594E4F24F20CFE9E85363_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredDebt_9A8CA0C292E594E4F24F20CFE9E85363" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Secured debt</link:label>
    <link:label id="lab_us-gaap_SecuredDebt_9A8CA0C292E594E4F24F20CFE9E85363_label_en-US" xlink:label="lab_us-gaap_SecuredDebt_9A8CA0C292E594E4F24F20CFE9E85363" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SecuredDebt" xlink:label="loc_us-gaap_SecuredDebt_9A8CA0C292E594E4F24F20CFE9E85363" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SecuredDebt_9A8CA0C292E594E4F24F20CFE9E85363" xlink:to="lab_us-gaap_SecuredDebt_9A8CA0C292E594E4F24F20CFE9E85363" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCredit_58ED3B381E4D62ECFEEC20CFE9E89543_verboseLabel_en-US" xlink:label="lab_us-gaap_LineOfCredit_58ED3B381E4D62ECFEEC20CFE9E89543" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Long-term line of credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCredit" xlink:label="loc_us-gaap_LineOfCredit_58ED3B381E4D62ECFEEC20CFE9E89543" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCredit_58ED3B381E4D62ECFEEC20CFE9E89543" xlink:to="lab_us-gaap_LineOfCredit_58ED3B381E4D62ECFEEC20CFE9E89543" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_715E0196F7CDBB9F5B4D1BAC26647222_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_715E0196F7CDBB9F5B4D1BAC26647222" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_715E0196F7CDBB9F5B4D1BAC26647222" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_715E0196F7CDBB9F5B4D1BAC26647222" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_715E0196F7CDBB9F5B4D1BAC26647222" xlink:type="arc" />
    <link:label id="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D_terseLabel_en-US" xlink:label="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Organization Consolidation And Presentation Of Financial Statements Disclosure [Table]</link:label>
    <link:label id="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D_label_en-US" xlink:label="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization Consolidation And Presentation Of Financial Statements Disclosure [Table]</link:label>
    <link:label id="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D_documentation_en-US" xlink:label="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Organization consolidation and presentation of financial statements disclosure.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable" xlink:label="loc_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D" xlink:to="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTable_71082BC3EC9D0A2E36E81BAC2664983D" xlink:type="arc" />
    <link:label id="lab_stpr_MD_253A77F41B8641F35B681BAC2665631D_terseLabel_en-US" xlink:label="lab_stpr_MD_253A77F41B8641F35B681BAC2665631D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maryland</link:label>
    <link:label id="lab_stpr_MD_253A77F41B8641F35B681BAC2665631D_label_en-US" xlink:label="lab_stpr_MD_253A77F41B8641F35B681BAC2665631D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MARYLAND</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/stpr/2018/stpr-2018-01-31.xsd#stpr_MD" xlink:label="loc_stpr_MD_253A77F41B8641F35B681BAC2665631D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_stpr_MD_253A77F41B8641F35B681BAC2665631D" xlink:to="lab_stpr_MD_253A77F41B8641F35B681BAC2665631D" xlink:type="arc" />
    <link:label id="lab_srt_OwnershipAxis_D3331F6F58A6EA2151111C0D6D6D21E8_terseLabel_en-US" xlink:label="lab_srt_OwnershipAxis_D3331F6F58A6EA2151111C0D6D6D21E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ownership [Axis]</link:label>
    <link:label id="lab_srt_OwnershipAxis_D3331F6F58A6EA2151111C0D6D6D21E8_label_en-US" xlink:label="lab_srt_OwnershipAxis_D3331F6F58A6EA2151111C0D6D6D21E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ownership [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_OwnershipAxis" xlink:label="loc_srt_OwnershipAxis_D3331F6F58A6EA2151111C0D6D6D21E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_OwnershipAxis_D3331F6F58A6EA2151111C0D6D6D21E8" xlink:to="lab_srt_OwnershipAxis_D3331F6F58A6EA2151111C0D6D6D21E8" xlink:type="arc" />
    <link:label id="lab_srt_OwnershipDomain_230658F9675DC3FC37AF1C0DBF5DFCB7_terseLabel_en-US" xlink:label="lab_srt_OwnershipDomain_230658F9675DC3FC37AF1C0DBF5DFCB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ownership [Domain]</link:label>
    <link:label id="lab_srt_OwnershipDomain_230658F9675DC3FC37AF1C0DBF5DFCB7_label_en-US" xlink:label="lab_srt_OwnershipDomain_230658F9675DC3FC37AF1C0DBF5DFCB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ownership [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_OwnershipDomain" xlink:label="loc_srt_OwnershipDomain_230658F9675DC3FC37AF1C0DBF5DFCB7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_OwnershipDomain_230658F9675DC3FC37AF1C0DBF5DFCB7" xlink:to="lab_srt_OwnershipDomain_230658F9675DC3FC37AF1C0DBF5DFCB7" xlink:type="arc" />
    <link:label id="lab_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53_terseLabel_en-US" xlink:label="lab_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gladstone Land Limited Partnership</link:label>
    <link:label id="lab_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53_label_en-US" xlink:label="lab_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gladstone Land Limited Partnership [Member]</link:label>
    <link:label id="lab_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53_documentation_en-US" xlink:label="lab_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gladstone Land Limited Partnership [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_GladstoneLandLimitedPartnershipMember" xlink:label="loc_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53" xlink:to="lab_land_GladstoneLandLimitedPartnershipMember_39A91305F29F21E78CBB1C0DBF721D53" xlink:type="arc" />
    <link:label id="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773_terseLabel_en-US" xlink:label="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]</link:label>
    <link:label id="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773_label_en-US" xlink:label="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items]</link:label>
    <link:label id="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773_documentation_en-US" xlink:label="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Organization consolidation and presentation of financial statements disclosure.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems" xlink:label="loc_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773" xlink:to="lab_land_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureLineItems_D7EEBEDC3D31343142DB1BAC26678773" xlink:type="arc" />
    <link:label id="lab_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85_terseLabel_en-US" xlink:label="lab_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company re-incorporated date</link:label>
    <link:label id="lab_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85_label_en-US" xlink:label="lab_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Date Of Reincorporation</link:label>
    <link:label id="lab_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85_documentation_en-US" xlink:label="lab_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Date of reincorporation.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DateOfReincorporation" xlink:label="loc_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85" xlink:to="lab_land_DateOfReincorporation_F057D43E93F522DEA3C01BAC2667FA85" xlink:type="arc" />
    <link:label id="lab_dei_EntityIncorporationDateOfIncorporation_FDD45744BBEB8AE7C2461BAC266706AB_terseLabel_en-US" xlink:label="lab_dei_EntityIncorporationDateOfIncorporation_FDD45744BBEB8AE7C2461BAC266706AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company originally incorporated date</link:label>
    <link:label id="lab_dei_EntityIncorporationDateOfIncorporation_FDD45744BBEB8AE7C2461BAC266706AB_label_en-US" xlink:label="lab_dei_EntityIncorporationDateOfIncorporation_FDD45744BBEB8AE7C2461BAC266706AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Entity Incorporation, Date of Incorporation</link:label>
    <link:loc xlink:href="https://xbrl.sec.gov/dei/2018/dei-2018-01-31.xsd#dei_EntityIncorporationDateOfIncorporation" xlink:label="loc_dei_EntityIncorporationDateOfIncorporation_FDD45744BBEB8AE7C2461BAC266706AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_dei_EntityIncorporationDateOfIncorporation_FDD45744BBEB8AE7C2461BAC266706AB" xlink:to="lab_dei_EntityIncorporationDateOfIncorporation_FDD45744BBEB8AE7C2461BAC266706AB" xlink:type="arc" />
    <link:label id="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_00B5A913F20C97DBCDD91BAC26685790_terseLabel_en-US" xlink:label="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_00B5A913F20C97DBCDD91BAC26685790" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Company's ownership percent (as percent)</link:label>
    <link:label id="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_00B5A913F20C97DBCDD91BAC26685790_label_en-US" xlink:label="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_00B5A913F20C97DBCDD91BAC26685790" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Ownership Percentage by Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MinorityInterestOwnershipPercentageByParent" xlink:label="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_00B5A913F20C97DBCDD91BAC26685790" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MinorityInterestOwnershipPercentageByParent_00B5A913F20C97DBCDD91BAC26685790" xlink:to="lab_us-gaap_MinorityInterestOwnershipPercentageByParent_00B5A913F20C97DBCDD91BAC26685790" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockLiquidationPreference_F713F61080E97194435C11CA154DB6C7_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockLiquidationPreference_F713F61080E97194435C11CA154DB6C7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, liquidation preference (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_PreferredStockLiquidationPreference_F713F61080E97194435C11CA154DB6C7_label_en-US" xlink:label="lab_us-gaap_PreferredStockLiquidationPreference_F713F61080E97194435C11CA154DB6C7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Liquidation Preference Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockLiquidationPreference" xlink:label="loc_us-gaap_PreferredStockLiquidationPreference_F713F61080E97194435C11CA154DB6C7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockLiquidationPreference_F713F61080E97194435C11CA154DB6C7" xlink:to="lab_us-gaap_PreferredStockLiquidationPreference_F713F61080E97194435C11CA154DB6C7" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_E31E794E29750FDB2EE211CA154D1D53_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_E31E794E29750FDB2EE211CA154D1D53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, shares authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesAuthorized_E31E794E29750FDB2EE211CA154D1D53_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesAuthorized_E31E794E29750FDB2EE211CA154D1D53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesAuthorized" xlink:label="loc_us-gaap_PreferredStockSharesAuthorized_E31E794E29750FDB2EE211CA154D1D53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesAuthorized_E31E794E29750FDB2EE211CA154D1D53" xlink:to="lab_us-gaap_PreferredStockSharesAuthorized_E31E794E29750FDB2EE211CA154D1D53" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesIssued_133151D6B601E37E338611CA154EEF83_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_133151D6B601E37E338611CA154EEF83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, shares issued (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockSharesIssued_133151D6B601E37E338611CA154EEF83_label_en-US" xlink:label="lab_us-gaap_PreferredStockSharesIssued_133151D6B601E37E338611CA154EEF83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Shares Issued</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesIssued" xlink:label="loc_us-gaap_PreferredStockSharesIssued_133151D6B601E37E338611CA154EEF83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesIssued_133151D6B601E37E338611CA154EEF83" xlink:to="lab_us-gaap_PreferredStockSharesIssued_133151D6B601E37E338611CA154EEF83" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockSharesOutstanding_C2953FBB21D08EC14C2A11CA154E3B18_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockSharesOutstanding_C2953FBB21D08EC14C2A11CA154E3B18" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, shares outstanding (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockSharesOutstanding" xlink:label="loc_us-gaap_PreferredStockSharesOutstanding_C2953FBB21D08EC14C2A11CA154E3B18" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockSharesOutstanding_C2953FBB21D08EC14C2A11CA154E3B18" xlink:to="lab_us-gaap_PreferredStockSharesOutstanding_C2953FBB21D08EC14C2A11CA154E3B18" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_2068FEB99BCD0BCD8CE111CA154C697D_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_2068FEB99BCD0BCD8CE111CA154C697D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, par value (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockParOrStatedValuePerShare_2068FEB99BCD0BCD8CE111CA154C697D_label_en-US" xlink:label="lab_us-gaap_CommonStockParOrStatedValuePerShare_2068FEB99BCD0BCD8CE111CA154C697D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Par or Stated Value Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockParOrStatedValuePerShare" xlink:label="loc_us-gaap_CommonStockParOrStatedValuePerShare_2068FEB99BCD0BCD8CE111CA154C697D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockParOrStatedValuePerShare_2068FEB99BCD0BCD8CE111CA154C697D" xlink:to="lab_us-gaap_CommonStockParOrStatedValuePerShare_2068FEB99BCD0BCD8CE111CA154C697D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_01EF1E7CE6C4929861BA11CA154DB467_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_01EF1E7CE6C4929861BA11CA154DB467" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares authorized (in shares)</link:label>
    <link:label id="lab_us-gaap_CommonStockSharesAuthorized_01EF1E7CE6C4929861BA11CA154DB467_label_en-US" xlink:label="lab_us-gaap_CommonStockSharesAuthorized_01EF1E7CE6C4929861BA11CA154DB467" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Shares Authorized</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesAuthorized" xlink:label="loc_us-gaap_CommonStockSharesAuthorized_01EF1E7CE6C4929861BA11CA154DB467" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesAuthorized_01EF1E7CE6C4929861BA11CA154DB467" xlink:to="lab_us-gaap_CommonStockSharesAuthorized_01EF1E7CE6C4929861BA11CA154DB467" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockSharesOutstanding_49923B68772F2887E64D11CA154DC72C_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockSharesOutstanding_49923B68772F2887E64D11CA154DC72C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, shares outstanding (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockSharesOutstanding" xlink:label="loc_us-gaap_CommonStockSharesOutstanding_49923B68772F2887E64D11CA154DC72C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockSharesOutstanding_49923B68772F2887E64D11CA154DC72C" xlink:to="lab_us-gaap_CommonStockSharesOutstanding_49923B68772F2887E64D11CA154DC72C" xlink:type="arc" />
    <link:label id="lab_us-gaap_CollateralAxis_77D2CE742C051502F40D2807914B12D0_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralAxis_77D2CE742C051502F40D2807914B12D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collateral [Axis]</link:label>
    <link:label id="lab_us-gaap_CollateralAxis_77D2CE742C051502F40D2807914B12D0_label_en-US" xlink:label="lab_us-gaap_CollateralAxis_77D2CE742C051502F40D2807914B12D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collateral [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CollateralAxis" xlink:label="loc_us-gaap_CollateralAxis_77D2CE742C051502F40D2807914B12D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CollateralAxis_77D2CE742C051502F40D2807914B12D0" xlink:to="lab_us-gaap_CollateralAxis_77D2CE742C051502F40D2807914B12D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_CollateralDomain_D1948375BC0E380987782807914BDB4F_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralDomain_D1948375BC0E380987782807914BDB4F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collateral [Domain]</link:label>
    <link:label id="lab_us-gaap_CollateralDomain_D1948375BC0E380987782807914BDB4F_label_en-US" xlink:label="lab_us-gaap_CollateralDomain_D1948375BC0E380987782807914BDB4F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collateral [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CollateralDomain" xlink:label="loc_us-gaap_CollateralDomain_D1948375BC0E380987782807914BDB4F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CollateralDomain_D1948375BC0E380987782807914BDB4F" xlink:to="lab_us-gaap_CollateralDomain_D1948375BC0E380987782807914BDB4F" xlink:type="arc" />
    <link:label id="lab_us-gaap_CollateralPledgedMember_8E8227AD5114635FFE282807914B8A3D_terseLabel_en-US" xlink:label="lab_us-gaap_CollateralPledgedMember_8E8227AD5114635FFE282807914B8A3D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Collateral pledged</link:label>
    <link:label id="lab_us-gaap_CollateralPledgedMember_8E8227AD5114635FFE282807914B8A3D_label_en-US" xlink:label="lab_us-gaap_CollateralPledgedMember_8E8227AD5114635FFE282807914B8A3D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Collateral Pledged [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CollateralPledgedMember" xlink:label="loc_us-gaap_CollateralPledgedMember_8E8227AD5114635FFE282807914B8A3D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CollateralPledgedMember_8E8227AD5114635FFE282807914B8A3D" xlink:to="lab_us-gaap_CollateralPledgedMember_8E8227AD5114635FFE282807914B8A3D" xlink:type="arc" />
    <link:label id="lab_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C_verboseLabel_en-US" xlink:label="lab_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Farmer Mac Bonds Payable</link:label>
    <link:label id="lab_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C_label_en-US" xlink:label="lab_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farmer Mac Bonds Payable [Member]</link:label>
    <link:label id="lab_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C_documentation_en-US" xlink:label="lab_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farmer Mac Bonds Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmerMacBondsPayableMember" xlink:label="loc_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C" xlink:to="lab_land_FarmerMacBondsPayableMember_6214647CB420E0D61ADD2807914BAD0C" xlink:type="arc" />
    <link:label id="lab_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765_terseLabel_en-US" xlink:label="lab_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farmer Mac Bonds Payable Issued in Current Period</link:label>
    <link:label id="lab_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765_label_en-US" xlink:label="lab_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farmer Mac Bonds Payable Issued in Current Period [Member]</link:label>
    <link:label id="lab_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765_documentation_en-US" xlink:label="lab_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farmer Mac Bonds Payable Issued in Current Period [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmerMacBondsPayableIssuedinCurrentPeriodMember" xlink:label="loc_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765" xlink:to="lab_land_FarmerMacBondsPayableIssuedinCurrentPeriodMember_130A8851D0D2A14B86DB2807914B1765" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_6601BBDB183608026D082807914B5885_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_6601BBDB183608026D082807914B5885" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unused fee (as percent)</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_6601BBDB183608026D082807914B5885_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_6601BBDB183608026D082807914B5885" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Unused Capacity, Commitment Fee Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage" xlink:label="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_6601BBDB183608026D082807914B5885" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_6601BBDB183608026D082807914B5885" xlink:to="lab_us-gaap_LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage_6601BBDB183608026D082807914B5885" xlink:type="arc" />
    <link:label id="lab_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A_terseLabel_en-US" xlink:label="lab_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of debt instruments issued</link:label>
    <link:label id="lab_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A_label_en-US" xlink:label="lab_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instruments, Number of Debt Instruments Issued</link:label>
    <link:label id="lab_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A_documentation_en-US" xlink:label="lab_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instruments, Number of Debt Instruments Issued</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtInstrumentsNumberofDebtInstrumentsIssued" xlink:label="loc_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A" xlink:to="lab_land_DebtInstrumentsNumberofDebtInstrumentsIssued_0B2B8DD3BD86304812292807914B067A" xlink:type="arc" />
    <link:label id="lab_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859_terseLabel_en-US" xlink:label="lab_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of debt instruments paid</link:label>
    <link:label id="lab_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859_label_en-US" xlink:label="lab_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instruments, Number Of Debt Instruments Repaid In Period</link:label>
    <link:label id="lab_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859_documentation_en-US" xlink:label="lab_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instruments, Number Of Debt Instruments Repaid In Period</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod" xlink:label="loc_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859" xlink:to="lab_land_DebtInstrumentsNumberOfDebtInstrumentsRepaidInPeriod_0EE267F646E1C5A60CB72807914B1859" xlink:type="arc" />
    <link:label id="lab_us-gaap_ExtinguishmentOfDebtAmount_CB9FF47D0087E5A2190E2807914B3325_terseLabel_en-US" xlink:label="lab_us-gaap_ExtinguishmentOfDebtAmount_CB9FF47D0087E5A2190E2807914B3325" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bonds repaid</link:label>
    <link:label id="lab_us-gaap_ExtinguishmentOfDebtAmount_CB9FF47D0087E5A2190E2807914B3325_label_en-US" xlink:label="lab_us-gaap_ExtinguishmentOfDebtAmount_CB9FF47D0087E5A2190E2807914B3325" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Extinguishment of Debt, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ExtinguishmentOfDebtAmount" xlink:label="loc_us-gaap_ExtinguishmentOfDebtAmount_CB9FF47D0087E5A2190E2807914B3325" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ExtinguishmentOfDebtAmount_CB9FF47D0087E5A2190E2807914B3325" xlink:to="lab_us-gaap_ExtinguishmentOfDebtAmount_CB9FF47D0087E5A2190E2807914B3325" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfSecuredDebt_CA60F8293BA95479D54C2807914BB024_terseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfSecuredDebt_CA60F8293BA95479D54C2807914BB024" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Repayments of bonds</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfSecuredDebt_CA60F8293BA95479D54C2807914BB024_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfSecuredDebt_CA60F8293BA95479D54C2807914BB024" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Secured Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_CA60F8293BA95479D54C2807914BB024" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfSecuredDebt_CA60F8293BA95479D54C2807914BB024" xlink:to="lab_us-gaap_RepaymentsOfSecuredDebt_CA60F8293BA95479D54C2807914BB024" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnInvestments_605E7D678A939A5862402807914B2950_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnInvestments_605E7D678A939A5862402807914B2950" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on collateral pledged</link:label>
    <link:label id="lab_us-gaap_GainLossOnInvestments_605E7D678A939A5862402807914B2950_label_en-US" xlink:label="lab_us-gaap_GainLossOnInvestments_605E7D678A939A5862402807914B2950" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnInvestments" xlink:label="loc_us-gaap_GainLossOnInvestments_605E7D678A939A5862402807914B2950" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnInvestments_605E7D678A939A5862402807914B2950" xlink:to="lab_us-gaap_GainLossOnInvestments_605E7D678A939A5862402807914B2950" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtWeightedAverageInterestRate_A871C113624D412D1E162807914B49D2_terseLabel_en-US" xlink:label="lab_us-gaap_DebtWeightedAverageInterestRate_A871C113624D412D1E162807914B49D2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted-average interest rate (as percent)</link:label>
    <link:label id="lab_us-gaap_DebtWeightedAverageInterestRate_A871C113624D412D1E162807914B49D2_label_en-US" xlink:label="lab_us-gaap_DebtWeightedAverageInterestRate_A871C113624D412D1E162807914B49D2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt, Weighted Average Interest Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtWeightedAverageInterestRate" xlink:label="loc_us-gaap_DebtWeightedAverageInterestRate_A871C113624D412D1E162807914B49D2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtWeightedAverageInterestRate_A871C113624D412D1E162807914B49D2" xlink:to="lab_us-gaap_DebtWeightedAverageInterestRate_A871C113624D412D1E162807914B49D2" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_4384BBE8B1EF8C7A54B22807914B3BB6_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_4384BBE8B1EF8C7A54B22807914B3BB6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Undrawn Commitment</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_4384BBE8B1EF8C7A54B22807914B3BB6_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_4384BBE8B1EF8C7A54B22807914B3BB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Unused Borrowing Capacity, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount" xlink:label="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_4384BBE8B1EF8C7A54B22807914B3BB6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_4384BBE8B1EF8C7A54B22807914B3BB6" xlink:to="lab_us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount_4384BBE8B1EF8C7A54B22807914B3BB6" xlink:type="arc" />
    <link:label id="lab_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492_terseLabel_en-US" xlink:label="lab_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate principal amount of outstanding bonds percentage</link:label>
    <link:label id="lab_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492_label_en-US" xlink:label="lab_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Aggregate Principal Amount of Outstanding Bonds Percentage</link:label>
    <link:label id="lab_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492_documentation_en-US" xlink:label="lab_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Aggregate Principal Amount of Outstanding Bonds Percentage</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AggregatePrincipalAmountOfOutstandingBondsPercentage" xlink:label="loc_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492" xlink:to="lab_land_AggregatePrincipalAmountOfOutstandingBondsPercentage_17B824E19575B85BAC2D2807914BE492" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_298B89A80113463A119A15B4ADD8AB58_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_298B89A80113463A119A15B4ADD8AB58" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_298B89A80113463A119A15B4ADD8AB58" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_298B89A80113463A119A15B4ADD8AB58" xlink:to="lab_us-gaap_EarningsPerShareAbstract_298B89A80113463A119A15B4ADD8AB58" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_E21D46691554F7C7139515B4ADD8CF16_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_E21D46691554F7C7139515B4ADD8CF16" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Computation of Basic and Diluted Earnings (Loss) Per Common Share</link:label>
    <link:label id="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_E21D46691554F7C7139515B4ADD8CF16_label_en-US" xlink:label="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_E21D46691554F7C7139515B4ADD8CF16" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_E21D46691554F7C7139515B4ADD8CF16" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_E21D46691554F7C7139515B4ADD8CF16" xlink:to="lab_us-gaap_ScheduleOfEarningsPerShareBasicAndDilutedTableTextBlock_E21D46691554F7C7139515B4ADD8CF16" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_293B53563773263FF7F61D399919CBE1_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_293B53563773263FF7F61D399919CBE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_293B53563773263FF7F61D399919CBE1_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_293B53563773263FF7F61D399919CBE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Finite-Lived Intangible Assets [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable" xlink:label="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_293B53563773263FF7F61D399919CBE1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_293B53563773263FF7F61D399919CBE1" xlink:to="lab_us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_293B53563773263FF7F61D399919CBE1" xlink:type="arc" />
    <link:label id="lab_land_BelowMarketLeasesAndDeferredRevenueMember_C94D5BE302C2482968171D39991A51F3_verboseLabel_en-US" xlink:label="lab_land_BelowMarketLeasesAndDeferredRevenueMember_C94D5BE302C2482968171D39991A51F3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Below-market lease values and deferred revenue</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BelowMarketLeasesAndDeferredRevenueMember" xlink:label="loc_land_BelowMarketLeasesAndDeferredRevenueMember_C94D5BE302C2482968171D39991A51F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BelowMarketLeasesAndDeferredRevenueMember_C94D5BE302C2482968171D39991A51F3" xlink:to="lab_land_BelowMarketLeasesAndDeferredRevenueMember_C94D5BE302C2482968171D39991A51F3" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A011177730E6230932E31D39991BF788_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A011177730E6230932E31D39991BF788" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A011177730E6230932E31D39991BF788_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A011177730E6230932E31D39991BF788" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsLineItems" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_A011177730E6230932E31D39991BF788" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsLineItems_A011177730E6230932E31D39991BF788" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsLineItems_A011177730E6230932E31D39991BF788" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_ECEB3D4E5F4B174D5FA21D39991BB8A2_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_ECEB3D4E5F4B174D5FA21D39991BB8A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite-lived intangible assets, gross</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsGross_ECEB3D4E5F4B174D5FA21D39991BB8A2_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsGross_ECEB3D4E5F4B174D5FA21D39991BB8A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsGross" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_ECEB3D4E5F4B174D5FA21D39991BB8A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsGross_ECEB3D4E5F4B174D5FA21D39991BB8A2" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsGross_ECEB3D4E5F4B174D5FA21D39991BB8A2" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_DE63E33A2839801808991D39991B0C67_negatedLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_DE63E33A2839801808991D39991B0C67" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accumulated amortization</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_DE63E33A2839801808991D39991B0C67_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_DE63E33A2839801808991D39991B0C67" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_DE63E33A2839801808991D39991B0C67" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_DE63E33A2839801808991D39991B0C67" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_DE63E33A2839801808991D39991B0C67" xlink:type="arc" />
    <link:label id="lab_us-gaap_BelowMarketLeaseGross_8831B16533FB8433456A1D39991B4032_negatedLabel_en-US" xlink:label="lab_us-gaap_BelowMarketLeaseGross_8831B16533FB8433456A1D39991B4032" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Below market lease, gross</link:label>
    <link:label id="lab_us-gaap_BelowMarketLeaseGross_8831B16533FB8433456A1D39991B4032_label_en-US" xlink:label="lab_us-gaap_BelowMarketLeaseGross_8831B16533FB8433456A1D39991B4032" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Below Market Lease, Gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BelowMarketLeaseGross" xlink:label="loc_us-gaap_BelowMarketLeaseGross_8831B16533FB8433456A1D39991B4032" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BelowMarketLeaseGross_8831B16533FB8433456A1D39991B4032" xlink:to="lab_us-gaap_BelowMarketLeaseGross_8831B16533FB8433456A1D39991B4032" xlink:type="arc" />
    <link:label id="lab_us-gaap_BelowMarketLeaseAccumulatedAmortization_79EE1CB7FF406F55FD011D39991B56F7_terseLabel_en-US" xlink:label="lab_us-gaap_BelowMarketLeaseAccumulatedAmortization_79EE1CB7FF406F55FD011D39991B56F7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Below market lease, accumulated amortization</link:label>
    <link:label id="lab_us-gaap_BelowMarketLeaseAccumulatedAmortization_79EE1CB7FF406F55FD011D39991B56F7_label_en-US" xlink:label="lab_us-gaap_BelowMarketLeaseAccumulatedAmortization_79EE1CB7FF406F55FD011D39991B56F7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Below Market Lease, Accumulated Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BelowMarketLeaseAccumulatedAmortization" xlink:label="loc_us-gaap_BelowMarketLeaseAccumulatedAmortization_79EE1CB7FF406F55FD011D39991B56F7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BelowMarketLeaseAccumulatedAmortization_79EE1CB7FF406F55FD011D39991B56F7" xlink:to="lab_us-gaap_BelowMarketLeaseAccumulatedAmortization_79EE1CB7FF406F55FD011D39991B56F7" xlink:type="arc" />
    <link:label id="lab_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95_terseLabel_en-US" xlink:label="lab_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Finite lived intangible assets liabilities gross</link:label>
    <link:label id="lab_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95_label_en-US" xlink:label="lab_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite Lived Intangible Assets Liabilities Gross</link:label>
    <link:label id="lab_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95_documentation_en-US" xlink:label="lab_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finite lived intangible assets (liabilities) gross.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FiniteLivedIntangibleAssetsLiabilitiesGross" xlink:label="loc_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95" xlink:to="lab_land_FiniteLivedIntangibleAssetsLiabilitiesGross_12A9853552A575B4C9DF1D39991CBC95" xlink:type="arc" />
    <link:label id="lab_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265_negatedLabel_en-US" xlink:label="lab_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Finite lived intangible assets accumulated amortization and accretion</link:label>
    <link:label id="lab_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265_label_en-US" xlink:label="lab_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite Lived Intangible Assets Accumulated Amortization And Accretion</link:label>
    <link:label id="lab_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265_documentation_en-US" xlink:label="lab_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Finite-lived intangible assets accumulated amortization and accretion.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion" xlink:label="loc_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265" xlink:to="lab_land_FiniteLivedIntangibleAssetsAccumulatedAmortizationAndAccretion_8AFE68EC2DEB1473BD9F1D39991CD265" xlink:type="arc" />
    <link:label id="lab_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0_terseLabel_en-US" xlink:label="lab_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of above-market lease values and deferred revenues</link:label>
    <link:label id="lab_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0_label_en-US" xlink:label="lab_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Above Market Lease</link:label>
    <link:label id="lab_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0_documentation_en-US" xlink:label="lab_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amortization of Above Market Lease</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AmortizationOfAboveMarketLease" xlink:label="loc_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0" xlink:to="lab_land_AmortizationOfAboveMarketLease_323CB114244F7CB317491D39991C80A0" xlink:type="arc" />
    <link:label id="lab_us-gaap_BelowMarketLeasePeriodIncreaseDecrease_C41379DB8BDC62C6C6441D39991CCB22_terseLabel_en-US" xlink:label="lab_us-gaap_BelowMarketLeasePeriodIncreaseDecrease_C41379DB8BDC62C6C6441D39991CCB22" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Below market lease, period increase (decrease)</link:label>
    <link:label id="lab_us-gaap_BelowMarketLeasePeriodIncreaseDecrease_C41379DB8BDC62C6C6441D39991CCB22_label_en-US" xlink:label="lab_us-gaap_BelowMarketLeasePeriodIncreaseDecrease_C41379DB8BDC62C6C6441D39991CCB22" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Below Market Lease, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BelowMarketLeasePeriodIncreaseDecrease" xlink:label="loc_us-gaap_BelowMarketLeasePeriodIncreaseDecrease_C41379DB8BDC62C6C6441D39991CCB22" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BelowMarketLeasePeriodIncreaseDecrease_C41379DB8BDC62C6C6441D39991CCB22" xlink:to="lab_us-gaap_BelowMarketLeasePeriodIncreaseDecrease_C41379DB8BDC62C6C6441D39991CCB22" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTable_724F35CDD94FF4F821FB2750A23BA6A1_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTable_724F35CDD94FF4F821FB2750A23BA6A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event [Table]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTable_724F35CDD94FF4F821FB2750A23BA6A1_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTable_724F35CDD94FF4F821FB2750A23BA6A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventTable" xlink:label="loc_us-gaap_SubsequentEventTable_724F35CDD94FF4F821FB2750A23BA6A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTable_724F35CDD94FF4F821FB2750A23BA6A1" xlink:to="lab_us-gaap_SubsequentEventTable_724F35CDD94FF4F821FB2750A23BA6A1" xlink:type="arc" />
    <link:label id="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_168E2C652BC20DE3F4E02750A23B7DB1_terseLabel_en-US" xlink:label="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_168E2C652BC20DE3F4E02750A23B7DB1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Partner Type [Axis]</link:label>
    <link:label id="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_168E2C652BC20DE3F4E02750A23B7DB1_label_en-US" xlink:label="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_168E2C652BC20DE3F4E02750A23B7DB1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Partner Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountAxis" xlink:label="loc_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_168E2C652BC20DE3F4E02750A23B7DB1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_168E2C652BC20DE3F4E02750A23B7DB1" xlink:to="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_168E2C652BC20DE3F4E02750A23B7DB1" xlink:type="arc" />
    <link:label id="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_816E1E0813683D2022642750A23C59E2_terseLabel_en-US" xlink:label="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_816E1E0813683D2022642750A23C59E2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Partner Type of Partners' Capital Account, Name [Domain]</link:label>
    <link:label id="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_816E1E0813683D2022642750A23C59E2_label_en-US" xlink:label="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_816E1E0813683D2022642750A23C59E2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Partner Type of Partners' Capital Account, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain" xlink:label="loc_us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_816E1E0813683D2022642750A23C59E2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_816E1E0813683D2022642750A23C59E2" xlink:to="lab_us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_816E1E0813683D2022642750A23C59E2" xlink:type="arc" />
    <link:label id="lab_us-gaap_LimitedPartnerMember_22C1D8C4DE1FE3F1E4E92750A23D36C4_terseLabel_en-US" xlink:label="lab_us-gaap_LimitedPartnerMember_22C1D8C4DE1FE3F1E4E92750A23D36C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Limited Partner</link:label>
    <link:label id="lab_us-gaap_LimitedPartnerMember_22C1D8C4DE1FE3F1E4E92750A23D36C4_label_en-US" xlink:label="lab_us-gaap_LimitedPartnerMember_22C1D8C4DE1FE3F1E4E92750A23D36C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Limited Partner [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LimitedPartnerMember" xlink:label="loc_us-gaap_LimitedPartnerMember_22C1D8C4DE1FE3F1E4E92750A23D36C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LimitedPartnerMember_22C1D8C4DE1FE3F1E4E92750A23D36C4" xlink:to="lab_us-gaap_LimitedPartnerMember_22C1D8C4DE1FE3F1E4E92750A23D36C4" xlink:type="arc" />
    <link:label id="lab_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC_terseLabel_en-US" xlink:label="lab_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Debt Financing Costs</link:label>
    <link:label id="lab_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC_label_en-US" xlink:label="lab_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Financing Costs [Member]</link:label>
    <link:label id="lab_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC_documentation_en-US" xlink:label="lab_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Financing Costs [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtFinancingCostsMember" xlink:label="loc_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC" xlink:to="lab_land_DebtFinancingCostsMember_EB0AAA003C05E358F1252750A241D7EC" xlink:type="arc" />
    <link:label id="lab_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1_terseLabel_en-US" xlink:label="lab_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales Commissions and Broker-Dealer Fees</link:label>
    <link:label id="lab_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1_label_en-US" xlink:label="lab_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sales Commissions And Broker-Dealer Fees [Member]</link:label>
    <link:label id="lab_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1_documentation_en-US" xlink:label="lab_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Sales Commissions And Broker-Dealer Fees [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SalesCommissionsAndBrokerDealerFeesMember" xlink:label="loc_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1" xlink:to="lab_land_SalesCommissionsAndBrokerDealerFeesMember_6AA78D88C446A000D79F2750A24146C1" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1_terseLabel_en-US" xlink:label="lab_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable due 2043</link:label>
    <link:label id="lab_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1_label_en-US" xlink:label="lab_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable Due 2043 [Member]</link:label>
    <link:label id="lab_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1_documentation_en-US" xlink:label="lab_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit West Note Payable Due 2043 [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditWestNotePayableDue2043Member" xlink:label="loc_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1" xlink:to="lab_land_FarmCreditWestNotePayableDue2043Member_4638F22FC2E4E4BE39F52750A245FEE1" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_BBD2310A8487E997EEC92750A24563A2_terseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_BBD2310A8487E997EEC92750A24563A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name of Property [Axis]</link:label>
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_BBD2310A8487E997EEC92750A24563A2_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_BBD2310A8487E997EEC92750A24563A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Name of Property [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_BBD2310A8487E997EEC92750A24563A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_BBD2310A8487E997EEC92750A24563A2" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_BBD2310A8487E997EEC92750A24563A2" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3A915EBEB57130C84C832750A245932A_terseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3A915EBEB57130C84C832750A245932A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name of Property [Domain]</link:label>
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3A915EBEB57130C84C832750A245932A_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3A915EBEB57130C84C832750A245932A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Name of Property [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3A915EBEB57130C84C832750A245932A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3A915EBEB57130C84C832750A245932A" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_3A915EBEB57130C84C832750A245932A" xlink:type="arc" />
    <link:label id="lab_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF_terseLabel_en-US" xlink:label="lab_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">695-acre farm in Lincoln County, Nebraska</link:label>
    <link:label id="lab_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF_label_en-US" xlink:label="lab_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm, 695 Acres, Lincoln County, Nebraska [Member]</link:label>
    <link:label id="lab_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF_documentation_en-US" xlink:label="lab_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm, 695 Acres, Lincoln County, Nebraska [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_Farm695AcresLincolnCountyNebraskaMember" xlink:label="loc_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF" xlink:to="lab_land_Farm695AcresLincolnCountyNebraskaMember_E458D193F7847F82A1B52750A246CBCF" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeAxis_3B4A5E7E03569EE1AA262750A246DD21_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_3B4A5E7E03569EE1AA262750A246DD21" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTypeAxis_3B4A5E7E03569EE1AA262750A246DD21_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeAxis_3B4A5E7E03569EE1AA262750A246DD21" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventTypeAxis" xlink:label="loc_us-gaap_SubsequentEventTypeAxis_3B4A5E7E03569EE1AA262750A246DD21" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeAxis_3B4A5E7E03569EE1AA262750A246DD21" xlink:to="lab_us-gaap_SubsequentEventTypeAxis_3B4A5E7E03569EE1AA262750A246DD21" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_4AD058E424EB9D2EF8F82750A2461EAD_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_4AD058E424EB9D2EF8F82750A2461EAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventTypeDomain_4AD058E424EB9D2EF8F82750A2461EAD_label_en-US" xlink:label="lab_us-gaap_SubsequentEventTypeDomain_4AD058E424EB9D2EF8F82750A2461EAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventTypeDomain" xlink:label="loc_us-gaap_SubsequentEventTypeDomain_4AD058E424EB9D2EF8F82750A2461EAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventTypeDomain_4AD058E424EB9D2EF8F82750A2461EAD" xlink:to="lab_us-gaap_SubsequentEventTypeDomain_4AD058E424EB9D2EF8F82750A2461EAD" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventMember_777B873435A8484F078A2750A2477EB8_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_777B873435A8484F078A2750A2477EB8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event</link:label>
    <link:label id="lab_us-gaap_SubsequentEventMember_777B873435A8484F078A2750A2477EB8_label_en-US" xlink:label="lab_us-gaap_SubsequentEventMember_777B873435A8484F078A2750A2477EB8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventMember" xlink:label="loc_us-gaap_SubsequentEventMember_777B873435A8484F078A2750A2477EB8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventMember_777B873435A8484F078A2750A2477EB8" xlink:to="lab_us-gaap_SubsequentEventMember_777B873435A8484F078A2750A2477EB8" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventLineItems_D033201696E8A880AC492750A2483D97_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems_D033201696E8A880AC492750A2483D97" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Event [Line Items]</link:label>
    <link:label id="lab_us-gaap_SubsequentEventLineItems_D033201696E8A880AC492750A2483D97_label_en-US" xlink:label="lab_us-gaap_SubsequentEventLineItems_D033201696E8A880AC492750A2483D97" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Event [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventLineItems" xlink:label="loc_us-gaap_SubsequentEventLineItems_D033201696E8A880AC492750A2483D97" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventLineItems_D033201696E8A880AC492750A2483D97" xlink:to="lab_us-gaap_SubsequentEventLineItems_D033201696E8A880AC492750A2483D97" xlink:type="arc" />
    <link:label id="lab_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB_terseLabel_en-US" xlink:label="lab_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase price</link:label>
    <link:label id="lab_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB_label_en-US" xlink:label="lab_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Asset Acquisition, Consideration Transferred</link:label>
    <link:label id="lab_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB_documentation_en-US" xlink:label="lab_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Asset Acquisition, Consideration Transferred</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AssetAcquisitionConsiderationTransferred" xlink:label="loc_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB" xlink:to="lab_land_AssetAcquisitionConsiderationTransferred_7189832FAF8F352A78A82750A248A5FB" xlink:type="arc" />
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_B7839FE2D86A9507491E2750A24829D7_verboseLabel_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_B7839FE2D86A9507491E2750A24829D7" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Lease term (in years)</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LesseeLeasingArrangementLeaseRenewalTerm" xlink:label="loc_land_LesseeLeasingArrangementLeaseRenewalTerm_B7839FE2D86A9507491E2750A24829D7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LesseeLeasingArrangementLeaseRenewalTerm_B7839FE2D86A9507491E2750A24829D7" xlink:to="lab_land_LesseeLeasingArrangementLeaseRenewalTerm_B7839FE2D86A9507491E2750A24829D7" xlink:type="arc" />
    <link:label id="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_4F9CCA441F6AF17EBFF52750A249B889_verboseLabel_en-US" xlink:label="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_4F9CCA441F6AF17EBFF52750A249B889" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Number of renewal options</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LesseeLeasingArrangementLeaseRenewalOptions" xlink:label="loc_land_LesseeLeasingArrangementLeaseRenewalOptions_4F9CCA441F6AF17EBFF52750A249B889" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LesseeLeasingArrangementLeaseRenewalOptions_4F9CCA441F6AF17EBFF52750A249B889" xlink:to="lab_land_LesseeLeasingArrangementLeaseRenewalOptions_4F9CCA441F6AF17EBFF52750A249B889" xlink:type="arc" />
    <link:label id="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_2BDD2CA9AB767D503CE02750A2495CED_terseLabel_en-US" xlink:label="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_2BDD2CA9AB767D503CE02750A2495CED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rental revenue</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LessorOperatingLeaseAnnualizedStraightLineRent" xlink:label="loc_land_LessorOperatingLeaseAnnualizedStraightLineRent_2BDD2CA9AB767D503CE02750A2495CED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LessorOperatingLeaseAnnualizedStraightLineRent_2BDD2CA9AB767D503CE02750A2495CED" xlink:to="lab_land_LessorOperatingLeaseAnnualizedStraightLineRent_2BDD2CA9AB767D503CE02750A2495CED" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromNotesPayable_7B30DD10136739BB53E82750A2494165_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromNotesPayable_7B30DD10136739BB53E82750A2494165" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from notes payable</link:label>
    <link:label id="lab_us-gaap_ProceedsFromNotesPayable_7B30DD10136739BB53E82750A2494165_label_en-US" xlink:label="lab_us-gaap_ProceedsFromNotesPayable_7B30DD10136739BB53E82750A2494165" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Notes Payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromNotesPayable" xlink:label="loc_us-gaap_ProceedsFromNotesPayable_7B30DD10136739BB53E82750A2494165" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromNotesPayable_7B30DD10136739BB53E82750A2494165" xlink:to="lab_us-gaap_ProceedsFromNotesPayable_7B30DD10136739BB53E82750A2494165" xlink:type="arc" />
    <link:label id="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_93C4A935547F4A9063CD2750A24A9BE9_verboseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_93C4A935547F4A9063CD2750A24A9BE9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Sale of stock sold under sale agreement (in shares)</link:label>
    <link:label id="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_93C4A935547F4A9063CD2750A24A9BE9_label_en-US" xlink:label="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_93C4A935547F4A9063CD2750A24A9BE9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Stock, Number of Shares Issued in Transaction</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_93C4A935547F4A9063CD2750A24A9BE9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_93C4A935547F4A9063CD2750A24A9BE9" xlink:to="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_93C4A935547F4A9063CD2750A24A9BE9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_A2100A2D65D81ECF64392750A24ACBF4_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_A2100A2D65D81ECF64392750A24ACBF4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from issuance and preferred stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_A2100A2D65D81ECF64392750A24ACBF4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_A2100A2D65D81ECF64392750A24ACBF4" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfPreferredStockAndPreferenceStock_A2100A2D65D81ECF64392750A24ACBF4" xlink:type="arc" />
    <link:label id="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_EA2CA4432E024382541C2750A24B5F82_verboseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_EA2CA4432E024382541C2750A24B5F82" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Net proceeds from issuance of stock</link:label>
    <link:label id="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_EA2CA4432E024382541C2750A24B5F82_label_en-US" xlink:label="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_EA2CA4432E024382541C2750A24B5F82" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Stock, Consideration Received on Transaction</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_EA2CA4432E024382541C2750A24B5F82" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_EA2CA4432E024382541C2750A24B5F82" xlink:to="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_EA2CA4432E024382541C2750A24B5F82" xlink:type="arc" />
    <link:label id="lab_land_PaymentofManagementFees_9C472C1E49045B38E2D82750A24B2735_terseLabel_en-US" xlink:label="lab_land_PaymentofManagementFees_9C472C1E49045B38E2D82750A24B2735" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payment of management fees</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PaymentofManagementFees" xlink:label="loc_land_PaymentofManagementFees_9C472C1E49045B38E2D82750A24B2735" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PaymentofManagementFees_9C472C1E49045B38E2D82750A24B2735" xlink:to="lab_land_PaymentofManagementFees_9C472C1E49045B38E2D82750A24B2735" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_25F7D295C6E8BFC17EBF2750A24BAB2A_verboseLabel_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_25F7D295C6E8BFC17EBF2750A24BAB2A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Redemption of preferred stock (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodShares" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares_25F7D295C6E8BFC17EBF2750A24BAB2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRedeemedOrCalledDuringPeriodShares_25F7D295C6E8BFC17EBF2750A24BAB2A" xlink:to="lab_us-gaap_StockRedeemedOrCalledDuringPeriodShares_25F7D295C6E8BFC17EBF2750A24BAB2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockRedemptionPricePerShare_9084DE6C6AB8A6B101852750A24CFCB8_verboseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockRedemptionPricePerShare_9084DE6C6AB8A6B101852750A24CFCB8" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Redemption price of preferred stock (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockRedemptionPricePerShare" xlink:label="loc_us-gaap_PreferredStockRedemptionPricePerShare_9084DE6C6AB8A6B101852750A24CFCB8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockRedemptionPricePerShare_9084DE6C6AB8A6B101852750A24CFCB8" xlink:to="lab_us-gaap_PreferredStockRedemptionPricePerShare_9084DE6C6AB8A6B101852750A24CFCB8" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_D880143BF1C3ED3DB0F82750A24C6954_terseLabel_en-US" xlink:label="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_D880143BF1C3ED3DB0F82750A24C6954" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Redemption of preferred stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockRedeemedOrCalledDuringPeriodValue" xlink:label="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_D880143BF1C3ED3DB0F82750A24C6954" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockRedeemedOrCalledDuringPeriodValue_D880143BF1C3ED3DB0F82750A24C6954" xlink:to="lab_us-gaap_StockRedeemedOrCalledDuringPeriodValue_D880143BF1C3ED3DB0F82750A24C6954" xlink:type="arc" />
    <link:label id="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_DAE00730DDE482176DBD2750A24C9A53_terseLabel_en-US" xlink:label="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_DAE00730DDE482176DBD2750A24C9A53" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OP units tendered for redemption (in shares)</link:label>
    <link:label id="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_DAE00730DDE482176DBD2750A24C9A53_label_en-US" xlink:label="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_DAE00730DDE482176DBD2750A24C9A53" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Partners' Capital Account, Units, Redeemed</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PartnersCapitalAccountUnitsRedeemed" xlink:label="loc_us-gaap_PartnersCapitalAccountUnitsRedeemed_DAE00730DDE482176DBD2750A24C9A53" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PartnersCapitalAccountUnitsRedeemed_DAE00730DDE482176DBD2750A24C9A53" xlink:to="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_DAE00730DDE482176DBD2750A24C9A53" xlink:type="arc" />
    <link:label id="lab_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006_terseLabel_en-US" xlink:label="lab_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Additional annualized straight-line rental income</link:label>
    <link:label id="lab_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006_label_en-US" xlink:label="lab_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Annualized Straight Line Rent, Increase (Decrease)</link:label>
    <link:label id="lab_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006_documentation_en-US" xlink:label="lab_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Annualized  Straight Line Rent, Increase (Decrease)</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AnnualizedStraightLineRentIncreaseDecrease" xlink:label="loc_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006" xlink:to="lab_land_AnnualizedStraightLineRentIncreaseDecrease_3D25ABB6D175E27B85EE26D138DE0006" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_A1FEC20C2CEF7A3BED7827131E6D3CE5_terseLabel_en-US" xlink:label="lab_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_A1FEC20C2CEF7A3BED7827131E6D3CE5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain (loss) on dispositions of real estate assets, net</link:label>
    <link:label id="lab_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_A1FEC20C2CEF7A3BED7827131E6D3CE5_label_en-US" xlink:label="lab_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_A1FEC20C2CEF7A3BED7827131E6D3CE5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gains (Losses) on Sales of Investment Real Estate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainsLossesOnSalesOfInvestmentRealEstate" xlink:label="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_A1FEC20C2CEF7A3BED7827131E6D3CE5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_A1FEC20C2CEF7A3BED7827131E6D3CE5" xlink:to="lab_us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_A1FEC20C2CEF7A3BED7827131E6D3CE5" xlink:type="arc" />
    <link:label id="lab_land_LongTermMortgageNotesAndBondsPayableMember_D5DCB593AD48430299DF224FD2D96F3C_verboseLabel_en-US" xlink:label="lab_land_LongTermMortgageNotesAndBondsPayableMember_D5DCB593AD48430299DF224FD2D96F3C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Notes and bonds payable, net</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LongTermMortgageNotesAndBondsPayableMember" xlink:label="loc_land_LongTermMortgageNotesAndBondsPayableMember_D5DCB593AD48430299DF224FD2D96F3C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LongTermMortgageNotesAndBondsPayableMember_D5DCB593AD48430299DF224FD2D96F3C" xlink:to="lab_land_LongTermMortgageNotesAndBondsPayableMember_D5DCB593AD48430299DF224FD2D96F3C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_587D069074335DE3B762224FD2DADF0C_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_587D069074335DE3B762224FD2DADF0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2019</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_587D069074335DE3B762224FD2DADF0C_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_587D069074335DE3B762224FD2DADF0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_587D069074335DE3B762224FD2DADF0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_587D069074335DE3B762224FD2DADF0C" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_587D069074335DE3B762224FD2DADF0C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9FEDFF8EEB3FC6A775CD224FD2DA554B_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9FEDFF8EEB3FC6A775CD224FD2DA554B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2020</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9FEDFF8EEB3FC6A775CD224FD2DA554B_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9FEDFF8EEB3FC6A775CD224FD2DA554B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9FEDFF8EEB3FC6A775CD224FD2DA554B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9FEDFF8EEB3FC6A775CD224FD2DA554B" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_9FEDFF8EEB3FC6A775CD224FD2DA554B" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_CF0294D0D1EE56F7F1D4224FD2DBB4B8_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_CF0294D0D1EE56F7F1D4224FD2DBB4B8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2021</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_CF0294D0D1EE56F7F1D4224FD2DBB4B8_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_CF0294D0D1EE56F7F1D4224FD2DBB4B8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_CF0294D0D1EE56F7F1D4224FD2DBB4B8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_CF0294D0D1EE56F7F1D4224FD2DBB4B8" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_CF0294D0D1EE56F7F1D4224FD2DBB4B8" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7F82400972C4942536B224FD2DBDECB_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7F82400972C4942536B224FD2DBDECB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2022</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7F82400972C4942536B224FD2DBDECB_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7F82400972C4942536B224FD2DBDECB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7F82400972C4942536B224FD2DBDECB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7F82400972C4942536B224FD2DBDECB" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_A7F82400972C4942536B224FD2DBDECB" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_76DFED1489D50280AABD224FD2DB7E75_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_76DFED1489D50280AABD224FD2DB7E75" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2023</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_76DFED1489D50280AABD224FD2DB7E75_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_76DFED1489D50280AABD224FD2DB7E75" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal in Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_76DFED1489D50280AABD224FD2DB7E75" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_76DFED1489D50280AABD224FD2DB7E75" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_76DFED1489D50280AABD224FD2DB7E75" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_F7212CCB5928DE8D0A19224FD2DBBD95_terseLabel_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_F7212CCB5928DE8D0A19224FD2DBBD95" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Thereafter</link:label>
    <link:label id="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_F7212CCB5928DE8D0A19224FD2DBBD95_label_en-US" xlink:label="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_F7212CCB5928DE8D0A19224FD2DBBD95" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt, Maturities, Repayments of Principal after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_F7212CCB5928DE8D0A19224FD2DBBD95" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_F7212CCB5928DE8D0A19224FD2DBBD95" xlink:to="lab_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_F7212CCB5928DE8D0A19224FD2DBBD95" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_929CD747BBD85D026314224FD2DB2FE4_totalLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_929CD747BBD85D026314224FD2DB2FE4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total scheduled principal payments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_929CD747BBD85D026314224FD2DB2FE4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_929CD747BBD85D026314224FD2DB2FE4" xlink:to="lab_us-gaap_DebtInstrumentCarryingAmount_929CD747BBD85D026314224FD2DB2FE4" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_6D5C23B8E7CDC6CC39412200E2A688DD_terseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_6D5C23B8E7CDC6CC39412200E2A688DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule III - Real Estate and Accumulated Depreciation</link:label>
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_6D5C23B8E7CDC6CC39412200E2A688DD_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_6D5C23B8E7CDC6CC39412200E2A688DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_6D5C23B8E7CDC6CC39412200E2A688DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_6D5C23B8E7CDC6CC39412200E2A688DD" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_6D5C23B8E7CDC6CC39412200E2A688DD" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957_terseLabel_en-US" xlink:label="lab_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit Central Florida notes payable</link:label>
    <link:label id="lab_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957_label_en-US" xlink:label="lab_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit Central Florida Notes Payable [Member]</link:label>
    <link:label id="lab_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957_documentation_en-US" xlink:label="lab_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit Central Florida Notes Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditCentralFloridaNotesPayableMember" xlink:label="loc_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957" xlink:to="lab_land_FarmCreditCentralFloridaNotesPayableMember_5ABD0F17E8092A1E0B5A2807915B0957" xlink:type="arc" />
    <link:label id="lab_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77_terseLabel_en-US" xlink:label="lab_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cape Fear Farm Credit notes payable</link:label>
    <link:label id="lab_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77_label_en-US" xlink:label="lab_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cape Fear Farm Credit Notes Payable [Member]</link:label>
    <link:label id="lab_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77_documentation_en-US" xlink:label="lab_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cape Fear Farm Credit Notes Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CapeFearFarmCreditNotesPayableMember" xlink:label="loc_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77" xlink:to="lab_land_CapeFearFarmCreditNotesPayableMember_0591B86BA3BC19BCCAC82807915BCC77" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A_terseLabel_en-US" xlink:label="lab_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit FL notes payable</link:label>
    <link:label id="lab_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A_label_en-US" xlink:label="lab_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable [Member]</link:label>
    <link:label id="lab_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A_documentation_en-US" xlink:label="lab_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit FL Note Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditFLNotePayableMember" xlink:label="loc_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A" xlink:to="lab_land_FarmCreditFLNotePayableMember_D324F7CED759233C2D202807915BE89A" xlink:type="arc" />
    <link:label id="lab_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019_terseLabel_en-US" xlink:label="lab_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Northwest Farm Credit Services notes payable</link:label>
    <link:label id="lab_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019_label_en-US" xlink:label="lab_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Northwest Farm Credit Services Notes Payable [Member]</link:label>
    <link:label id="lab_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019_documentation_en-US" xlink:label="lab_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Northwest Farm Credit Services Notes Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NorthwestFarmCreditServicesNotesPayableMember" xlink:label="loc_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019" xlink:to="lab_land_NorthwestFarmCreditServicesNotesPayableMember_A24696BB19D5D896936E2807915BD019" xlink:type="arc" />
    <link:label id="lab_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810_terseLabel_en-US" xlink:label="lab_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farm Credit Notes Payable</link:label>
    <link:label id="lab_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810_label_en-US" xlink:label="lab_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Farm Credit Notes Payable [Member]</link:label>
    <link:label id="lab_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810_documentation_en-US" xlink:label="lab_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Farm Credit Notes Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmCreditNotesPayableMember" xlink:label="loc_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810" xlink:to="lab_land_FarmCreditNotesPayableMember_F1B8CE260BBC59C35A892807915B7810" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherNonoperatingIncome_76CA4CFF708D0C4106642807915B0A8B_terseLabel_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncome_76CA4CFF708D0C4106642807915B0A8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other income</link:label>
    <link:label id="lab_us-gaap_OtherNonoperatingIncome_76CA4CFF708D0C4106642807915B0A8B_label_en-US" xlink:label="lab_us-gaap_OtherNonoperatingIncome_76CA4CFF708D0C4106642807915B0A8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Nonoperating Income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherNonoperatingIncome" xlink:label="loc_us-gaap_OtherNonoperatingIncome_76CA4CFF708D0C4106642807915B0A8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherNonoperatingIncome_76CA4CFF708D0C4106642807915B0A8B" xlink:to="lab_us-gaap_OtherNonoperatingIncome_76CA4CFF708D0C4106642807915B0A8B" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_72E2B26A3154B2B174972807915BA2DF_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_72E2B26A3154B2B174972807915BA2DF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reduction in interest rate (as percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_72E2B26A3154B2B174972807915BA2DF_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_72E2B26A3154B2B174972807915BA2DF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateIncreaseDecrease" xlink:label="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_72E2B26A3154B2B174972807915BA2DF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_72E2B26A3154B2B174972807915BA2DF" xlink:to="lab_us-gaap_DebtInstrumentInterestRateIncreaseDecrease_72E2B26A3154B2B174972807915BA2DF" xlink:type="arc" />
    <link:label id="lab_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208_negatedTerseLabel_en-US" xlink:label="lab_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Reduction in basis points (as percent)</link:label>
    <link:label id="lab_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208_label_en-US" xlink:label="lab_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate, Increase (Decrease)</link:label>
    <link:label id="lab_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208_documentation_en-US" xlink:label="lab_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate, Increase (Decrease)</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease" xlink:label="loc_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208" xlink:to="lab_land_DebtInstrumentBasisSpreadonVariableRateIncreaseDecrease_67600BAA90DA485CB9432807915B5208" xlink:type="arc" />
    <link:label id="lab_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861_terseLabel_en-US" xlink:label="lab_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">MetLife Credit Facility</link:label>
    <link:label id="lab_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861_label_en-US" xlink:label="lab_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">MetLife Facility [Member]</link:label>
    <link:label id="lab_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861_documentation_en-US" xlink:label="lab_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">MetLife Facility [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MetlifeFacilityMember" xlink:label="loc_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861" xlink:to="lab_land_MetlifeFacilityMember_F63EE289324FD6ECDDC12834A65E8861" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditMember_2DEF5328C8C207EF3EFA2807917A048A_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_2DEF5328C8C207EF3EFA2807917A048A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit</link:label>
    <link:label id="lab_us-gaap_LineOfCreditMember_2DEF5328C8C207EF3EFA2807917A048A_label_en-US" xlink:label="lab_us-gaap_LineOfCreditMember_2DEF5328C8C207EF3EFA2807917A048A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditMember" xlink:label="loc_us-gaap_LineOfCreditMember_2DEF5328C8C207EF3EFA2807917A048A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditMember_2DEF5328C8C207EF3EFA2807917A048A" xlink:to="lab_us-gaap_LineOfCreditMember_2DEF5328C8C207EF3EFA2807917A048A" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateAxis_ADF2A82C3EFF19C98B9C2807917AEF4D_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateAxis_ADF2A82C3EFF19C98B9C2807917AEF4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Rate [Axis]</link:label>
    <link:label id="lab_us-gaap_VariableRateAxis_ADF2A82C3EFF19C98B9C2807917AEF4D_label_en-US" xlink:label="lab_us-gaap_VariableRateAxis_ADF2A82C3EFF19C98B9C2807917AEF4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Rate [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateAxis" xlink:label="loc_us-gaap_VariableRateAxis_ADF2A82C3EFF19C98B9C2807917AEF4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateAxis_ADF2A82C3EFF19C98B9C2807917AEF4D" xlink:to="lab_us-gaap_VariableRateAxis_ADF2A82C3EFF19C98B9C2807917AEF4D" xlink:type="arc" />
    <link:label id="lab_us-gaap_VariableRateDomain_6FC8836F15AEE406B5CD2807917AC004_terseLabel_en-US" xlink:label="lab_us-gaap_VariableRateDomain_6FC8836F15AEE406B5CD2807917AC004" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:label id="lab_us-gaap_VariableRateDomain_6FC8836F15AEE406B5CD2807917AC004_label_en-US" xlink:label="lab_us-gaap_VariableRateDomain_6FC8836F15AEE406B5CD2807917AC004" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable Rate [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_VariableRateDomain" xlink:label="loc_us-gaap_VariableRateDomain_6FC8836F15AEE406B5CD2807917AC004" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_VariableRateDomain_6FC8836F15AEE406B5CD2807917AC004" xlink:to="lab_us-gaap_VariableRateDomain_6FC8836F15AEE406B5CD2807917AC004" xlink:type="arc" />
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_21CA02C5537A83A339652807917ABE6D_terseLabel_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_21CA02C5537A83A339652807917ABE6D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">LIBOR</link:label>
    <link:label id="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_21CA02C5537A83A339652807917ABE6D_label_en-US" xlink:label="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_21CA02C5537A83A339652807917ABE6D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">London Interbank Offered Rate (LIBOR) [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LondonInterbankOfferedRateLIBORMember" xlink:label="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_21CA02C5537A83A339652807917ABE6D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LondonInterbankOfferedRateLIBORMember_21CA02C5537A83A339652807917ABE6D" xlink:to="lab_us-gaap_LondonInterbankOfferedRateLIBORMember_21CA02C5537A83A339652807917ABE6D" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentFaceAmount_8F468EBCA79DE801AA552807917AEB41_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentFaceAmount_8F468EBCA79DE801AA552807917AEB41" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Commitment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentFaceAmount" xlink:label="loc_us-gaap_DebtInstrumentFaceAmount_8F468EBCA79DE801AA552807917AEB41" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentFaceAmount_8F468EBCA79DE801AA552807917AEB41" xlink:to="lab_us-gaap_DebtInstrumentFaceAmount_8F468EBCA79DE801AA552807917AEB41" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7467FC0D52513C0C502E2807917A4851_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7467FC0D52513C0C502E2807917A4851" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basis spread (as percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7467FC0D52513C0C502E2807917A4851_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7467FC0D52513C0C502E2807917A4851" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Basis Spread on Variable Rate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentBasisSpreadOnVariableRate1" xlink:label="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7467FC0D52513C0C502E2807917A4851" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7467FC0D52513C0C502E2807917A4851" xlink:to="lab_us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_7467FC0D52513C0C502E2807917A4851" xlink:type="arc" />
    <link:label id="lab_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB_terseLabel_en-US" xlink:label="lab_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitment fee (as percent)</link:label>
    <link:label id="lab_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB_label_en-US" xlink:label="lab_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Commitment Fee Percentage</link:label>
    <link:label id="lab_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB_documentation_en-US" xlink:label="lab_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt instrument commitment fee percentage.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtInstrumentCommitmentFeePercentage" xlink:label="loc_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB" xlink:to="lab_land_DebtInstrumentCommitmentFeePercentage_86C6943EF226C47F8FF12807917A07DB" xlink:type="arc" />
    <link:label id="lab_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254_terseLabel_en-US" xlink:label="lab_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Long-term debt, additional amount available</link:label>
    <link:label id="lab_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254_label_en-US" xlink:label="lab_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Term Debt Additional Available Amount</link:label>
    <link:label id="lab_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254_documentation_en-US" xlink:label="lab_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Long Term Debt Additional Available Amount</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LongTermDebtAdditionalAvailableAmount" xlink:label="loc_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254" xlink:to="lab_land_LongTermDebtAdditionalAvailableAmount_10329A9539A6FF191A092807917AE254" xlink:type="arc" />
    <link:label id="lab_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E_terseLabel_en-US" xlink:label="lab_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum annualized rate (as percent)</link:label>
    <link:label id="lab_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E_label_en-US" xlink:label="lab_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Minimum Annualized Rate</link:label>
    <link:label id="lab_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E_documentation_en-US" xlink:label="lab_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt instrument minimum annualized rate.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtInstrumentMinimumAnnualizedRate" xlink:label="loc_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E" xlink:to="lab_land_DebtInstrumentMinimumAnnualizedRate_26A24B7FCE3797417EE02807917A1F3E" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_6CCEC2B6F5B2D039B9D62807917AB65E_terseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_6CCEC2B6F5B2D039B9D62807917AB65E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest rate (as percent)</link:label>
    <link:label id="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_6CCEC2B6F5B2D039B9D62807917AB65E_label_en-US" xlink:label="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_6CCEC2B6F5B2D039B9D62807917AB65E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument, Interest Rate, Effective Percentage</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentInterestRateEffectivePercentage" xlink:label="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_6CCEC2B6F5B2D039B9D62807917AB65E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentInterestRateEffectivePercentage_6CCEC2B6F5B2D039B9D62807917AB65E" xlink:to="lab_us-gaap_DebtInstrumentInterestRateEffectivePercentage_6CCEC2B6F5B2D039B9D62807917AB65E" xlink:type="arc" />
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_71BF85B0C65502D5FFFF2200E32F8E8F_terseLabel_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_71BF85B0C65502D5FFFF2200E32F8E8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equity</link:label>
    <link:label id="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_71BF85B0C65502D5FFFF2200E32F8E8F_label_en-US" xlink:label="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_71BF85B0C65502D5FFFF2200E32F8E8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stockholders' Equity Note Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StockholdersEquityNoteDisclosureTextBlock" xlink:label="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_71BF85B0C65502D5FFFF2200E32F8E8F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StockholdersEquityNoteDisclosureTextBlock_71BF85B0C65502D5FFFF2200E32F8E8F" xlink:to="lab_us-gaap_StockholdersEquityNoteDisclosureTextBlock_71BF85B0C65502D5FFFF2200E32F8E8F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_C0CA26DDAEE07E5DBEE11BAC26453F0B_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_C0CA26DDAEE07E5DBEE11BAC26453F0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Crop Inventory</link:label>
    <link:label id="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_C0CA26DDAEE07E5DBEE11BAC26453F0B_label_en-US" xlink:label="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_C0CA26DDAEE07E5DBEE11BAC26453F0B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Inventory, Current [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfInventoryCurrentTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_C0CA26DDAEE07E5DBEE11BAC26453F0B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_C0CA26DDAEE07E5DBEE11BAC26453F0B" xlink:to="lab_us-gaap_ScheduleOfInventoryCurrentTableTextBlock_C0CA26DDAEE07E5DBEE11BAC26453F0B" xlink:type="arc" />
    <link:label id="lab_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9_terseLabel_en-US" xlink:label="lab_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Revenue and Cost of Sales</link:label>
    <link:label id="lab_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9_label_en-US" xlink:label="lab_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Revenue And Cost Of Sales [Table Text Block]</link:label>
    <link:label id="lab_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9_documentation_en-US" xlink:label="lab_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">[Table Text Block] for Schedule Of Revenue And Cost Of Sales [Table]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ScheduleOfRevenueAndCostOfSalesTableTextBlock" xlink:label="loc_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9" xlink:to="lab_land_ScheduleOfRevenueAndCostOfSalesTableTextBlock_A79576C5280EABC48CF81BAC264610F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_36D4F9DFE446E39951551D39990F99CC_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_36D4F9DFE446E39951551D39990F99CC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Amortization Expense, 2019</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_36D4F9DFE446E39951551D39990F99CC_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_36D4F9DFE446E39951551D39990F99CC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_36D4F9DFE446E39951551D39990F99CC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_36D4F9DFE446E39951551D39990F99CC" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_36D4F9DFE446E39951551D39990F99CC" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8EA730611271B89AE6C51D39990F9A40_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8EA730611271B89AE6C51D39990F9A40" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Amortization Expense, 2020</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8EA730611271B89AE6C51D39990F9A40_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8EA730611271B89AE6C51D39990F9A40" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Two</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8EA730611271B89AE6C51D39990F9A40" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8EA730611271B89AE6C51D39990F9A40" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_8EA730611271B89AE6C51D39990F9A40" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_7A583314F8C04F091AF71D39990FFF2E_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_7A583314F8C04F091AF71D39990FFF2E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Amortization Expense, 2021</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_7A583314F8C04F091AF71D39990FFF2E_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_7A583314F8C04F091AF71D39990FFF2E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Three</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_7A583314F8C04F091AF71D39990FFF2E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_7A583314F8C04F091AF71D39990FFF2E" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_7A583314F8C04F091AF71D39990FFF2E" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_CCBC4A2D85CE6DBD35EF1D39990F7625_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_CCBC4A2D85CE6DBD35EF1D39990F7625" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Amortization Expense, 2022</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_CCBC4A2D85CE6DBD35EF1D39990F7625_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_CCBC4A2D85CE6DBD35EF1D39990F7625" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Four</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_CCBC4A2D85CE6DBD35EF1D39990F7625" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_CCBC4A2D85CE6DBD35EF1D39990F7625" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_CCBC4A2D85CE6DBD35EF1D39990F7625" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_06B43CD88F0DA8849F611D399910E174_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_06B43CD88F0DA8849F611D399910E174" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Amortization Expense, 2023</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_06B43CD88F0DA8849F611D399910E174_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_06B43CD88F0DA8849F611D399910E174" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_06B43CD88F0DA8849F611D399910E174" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_06B43CD88F0DA8849F611D399910E174" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_06B43CD88F0DA8849F611D399910E174" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2D8FE84FABC62B9A95FB1D39991050CA_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2D8FE84FABC62B9A95FB1D39991050CA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Amortization Expense, Thereafter</link:label>
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2D8FE84FABC62B9A95FB1D39991050CA_label_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2D8FE84FABC62B9A95FB1D39991050CA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Finite-Lived Intangible Assets, Amortization Expense, after Year Five</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2D8FE84FABC62B9A95FB1D39991050CA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2D8FE84FABC62B9A95FB1D39991050CA" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_2D8FE84FABC62B9A95FB1D39991050CA" xlink:type="arc" />
    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetsNet_C9BF656D54526E94A0EF1D39991088D9_totalLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetsNet_C9BF656D54526E94A0EF1D39991088D9" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Estimated Amortization Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_FiniteLivedIntangibleAssetsNet" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_C9BF656D54526E94A0EF1D39991088D9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_C9BF656D54526E94A0EF1D39991088D9" xlink:to="lab_us-gaap_FiniteLivedIntangibleAssetsNet_C9BF656D54526E94A0EF1D39991088D9" xlink:type="arc" />
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B_terseLabel_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Increase in Rental Revenue, 2019</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B_label_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Net Increase Decrease In Rental Revenue Current</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B_documentation_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">estimated net increase decrease in rental revenue current.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent" xlink:label="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B" xlink:to="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueCurrent_3922635E4E541969837C1D399910113B" xlink:type="arc" />
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C_terseLabel_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Increase in Rental Revenue, 2020</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C_label_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Net Increase Decrease In Rental Revenue In Two Years</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C_documentation_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated net increase decrease in rental revenue in two years.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears" xlink:label="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C" xlink:to="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInTwoYears_289B24C73DE60CE52EA21D3999103B0C" xlink:type="arc" />
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA_terseLabel_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Increase in Rental Revenue, 2021</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA_label_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Net Increase Decrease In Rental Revenue In Three Years</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA_documentation_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated net increase decrease in rental revenue in three years.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears" xlink:label="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA" xlink:to="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInThreeYears_E1B0BCCF7D3DAE2463CF1D3999115CBA" xlink:type="arc" />
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83_terseLabel_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Increase in Rental Revenue, 2022</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83_label_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Net Increase Decrease In Rental Revenue In Four Years</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83_documentation_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated net increase decrease in rental revenue in four years.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears" xlink:label="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83" xlink:to="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFourYears_BF71DE9A24CF31B9E5C61D3999112B83" xlink:type="arc" />
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9_terseLabel_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Increase in Rental Revenue, 2023</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9_label_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Net Increase Decrease In Rental Revenue In Five Years</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9_documentation_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated net increase decrease in rental revenue in five years.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears" xlink:label="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9" xlink:to="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueInFiveYears_8680BA76C0C5BD2EE6A21D3999114FB9" xlink:type="arc" />
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA_terseLabel_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Increase in Rental Revenue, Thereafter</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA_label_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Net Increase Decrease In Rental Revenue Thereafter</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA_documentation_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated net increase decrease in rental revenue thereafter.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter" xlink:label="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA" xlink:to="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenueThereafter_B2A93328B51C1BF1E25B1D39991195FA" xlink:type="arc" />
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A_totalLabel_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Estimated Net Increase to Rental Income</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A_label_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Estimated Net Increase Decrease In Rental Revenue</link:label>
    <link:label id="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A_documentation_en-US" xlink:label="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Estimated net increase decrease in rental revenue.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EstimatedNetIncreaseDecreaseInRentalRevenue" xlink:label="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A" xlink:to="lab_land_EstimatedNetIncreaseDecreaseInRentalRevenue_E6FD5FA1D1B6B15655771D3999119D3A" xlink:type="arc" />
    <link:label id="lab_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89_terseLabel_en-US" xlink:label="lab_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Lease intangibles:</link:label>
    <link:label id="lab_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89_label_en-US" xlink:label="lab_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lease Intangibles [Member]</link:label>
    <link:label id="lab_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89_documentation_en-US" xlink:label="lab_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Lease Intangibles [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LeaseIntangiblesMember" xlink:label="loc_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89" xlink:to="lab_land_LeaseIntangiblesMember_17D2AF92D0F00B4FE89411B4EFD5BB89" xlink:type="arc" />
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_B61980BC2935DCF6E6F211B4EFD6668D_terseLabel_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_B61980BC2935DCF6E6F211B4EFD6668D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant relationships</link:label>
    <link:label id="lab_us-gaap_CustomerRelationshipsMember_B61980BC2935DCF6E6F211B4EFD6668D_label_en-US" xlink:label="lab_us-gaap_CustomerRelationshipsMember_B61980BC2935DCF6E6F211B4EFD6668D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Customer Relationships [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CustomerRelationshipsMember" xlink:label="loc_us-gaap_CustomerRelationshipsMember_B61980BC2935DCF6E6F211B4EFD6668D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CustomerRelationshipsMember_B61980BC2935DCF6E6F211B4EFD6668D" xlink:to="lab_us-gaap_CustomerRelationshipsMember_B61980BC2935DCF6E6F211B4EFD6668D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_5A332D14D107D4D1CC6C11B4EFD721AB_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_5A332D14D107D4D1CC6C11B4EFD721AB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of intangible assets</link:label>
    <link:label id="lab_us-gaap_AmortizationOfIntangibleAssets_5A332D14D107D4D1CC6C11B4EFD721AB_label_en-US" xlink:label="lab_us-gaap_AmortizationOfIntangibleAssets_5A332D14D107D4D1CC6C11B4EFD721AB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Intangible Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfIntangibleAssets" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_5A332D14D107D4D1CC6C11B4EFD721AB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfIntangibleAssets_5A332D14D107D4D1CC6C11B4EFD721AB" xlink:to="lab_us-gaap_AmortizationOfIntangibleAssets_5A332D14D107D4D1CC6C11B4EFD721AB" xlink:type="arc" />
    <link:label id="lab_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196_terseLabel_en-US" xlink:label="lab_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Monthly Distributions Declared by Company's Board of Directors</link:label>
    <link:label id="lab_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196_label_en-US" xlink:label="lab_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Dividends Declared [Table Text Block]</link:label>
    <link:label id="lab_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196_documentation_en-US" xlink:label="lab_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Subsequent Dividends Declared [Table Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SubsequentDividendsDeclaredTableTextBlock" xlink:label="loc_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196" xlink:to="lab_land_SubsequentDividendsDeclaredTableTextBlock_BAB5C35E63256D84E36E2200E2C73196" xlink:type="arc" />
    <link:label id="lab_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6_terseLabel_en-US" xlink:label="lab_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Individual Metlife Notes</link:label>
    <link:label id="lab_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6_label_en-US" xlink:label="lab_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Individual Metlife Notes [Member]</link:label>
    <link:label id="lab_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6_documentation_en-US" xlink:label="lab_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Individual Metlife Notes [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_IndividualMetlifeNotesMember" xlink:label="loc_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6" xlink:to="lab_land_IndividualMetlifeNotesMember_73E3177A9C7E527DB45428079199AFB6" xlink:type="arc" />
    <link:label id="lab_land_FarmerMacBondsPayableMember_EB9FCF37C3C67B42629A28079199FF9F_terseLabel_en-US" xlink:label="lab_land_FarmerMacBondsPayableMember_EB9FCF37C3C67B42629A28079199FF9F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Farmer Mac Facility</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FarmerMacBondsPayableMember" xlink:label="loc_land_FarmerMacBondsPayableMember_EB9FCF37C3C67B42629A28079199FF9F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FarmerMacBondsPayableMember_EB9FCF37C3C67B42629A28079199FF9F" xlink:to="lab_land_FarmerMacBondsPayableMember_EB9FCF37C3C67B42629A28079199FF9F" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_F7E033992B733A6CAD48280791994B3E_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_F7E033992B733A6CAD48280791994B3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Borrowings</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_F7E033992B733A6CAD48280791994B3E_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_F7E033992B733A6CAD48280791994B3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_F7E033992B733A6CAD48280791994B3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_F7E033992B733A6CAD48280791994B3E" xlink:to="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_F7E033992B733A6CAD48280791994B3E" xlink:type="arc" />
    <link:label id="lab_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD_terseLabel_en-US" xlink:label="lab_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Borrowings by Type</link:label>
    <link:label id="lab_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD_label_en-US" xlink:label="lab_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Long-Term Debt, Description [Table Text Block]</link:label>
    <link:label id="lab_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD_documentation_en-US" xlink:label="lab_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of Long-Term Debt, Description [Table Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ScheduleofLongTermDebtDescriptionTableTextBlock" xlink:label="loc_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD" xlink:to="lab_land_ScheduleofLongTermDebtDescriptionTableTextBlock_DB5EE6C77434B4F57E712807919993DD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_861B777D9A2FA15DD3B0280791992DA2_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_861B777D9A2FA15DD3B0280791992DA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Aggregate Maturities</link:label>
    <link:label id="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_861B777D9A2FA15DD3B0280791992DA2_label_en-US" xlink:label="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_861B777D9A2FA15DD3B0280791992DA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Maturities of Long-term Debt [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_861B777D9A2FA15DD3B0280791992DA2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_861B777D9A2FA15DD3B0280791992DA2" xlink:to="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_861B777D9A2FA15DD3B0280791992DA2" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsequentEventsTextBlock_4F30090D1CA9E46AD71935550D03068B_terseLabel_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock_6751910EDD055F7EBD3F1C782F5760A1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent Events</link:label>
    <link:label id="lab_us-gaap_SubsequentEventsTextBlock_4F30090D1CA9E46AD71935550D03068B_label_en-US" xlink:label="lab_us-gaap_SubsequentEventsTextBlock_6751910EDD055F7EBD3F1C782F5760A1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Subsequent Events [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsequentEventsTextBlock" xlink:label="loc_us-gaap_SubsequentEventsTextBlock_6751910EDD055F7EBD3F1C782F5760A1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsequentEventsTextBlock_6751910EDD055F7EBD3F1C782F5760A1" xlink:to="lab_us-gaap_SubsequentEventsTextBlock_6751910EDD055F7EBD3F1C782F5760A1" xlink:type="arc" />
    <link:label id="lab_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C_terseLabel_en-US" xlink:label="lab_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OP Unit Holder</link:label>
    <link:label id="lab_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C_label_en-US" xlink:label="lab_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">OP Unit Holder [Member]</link:label>
    <link:label id="lab_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C_documentation_en-US" xlink:label="lab_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">OP Unit Holder [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OPUnitHolderMember" xlink:label="loc_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C" xlink:to="lab_land_OPUnitHolderMember_6DE5B5A240F821682EF62750A32C7E1C" xlink:type="arc" />
    <link:label id="lab_us-gaap_SubsidiarySaleOfStockAxis_3C2AAB93754D6E49EC3A2750A330B9FD_terseLabel_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockAxis_3C2AAB93754D6E49EC3A2750A330B9FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sale of Stock [Axis]</link:label>
    <link:label id="lab_us-gaap_SubsidiarySaleOfStockAxis_3C2AAB93754D6E49EC3A2750A330B9FD_label_en-US" xlink:label="lab_us-gaap_SubsidiarySaleOfStockAxis_3C2AAB93754D6E49EC3A2750A330B9FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Stock [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SubsidiarySaleOfStockAxis" xlink:label="loc_us-gaap_SubsidiarySaleOfStockAxis_3C2AAB93754D6E49EC3A2750A330B9FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SubsidiarySaleOfStockAxis_3C2AAB93754D6E49EC3A2750A330B9FD" xlink:to="lab_us-gaap_SubsidiarySaleOfStockAxis_3C2AAB93754D6E49EC3A2750A330B9FD" xlink:type="arc" />
    <link:label id="lab_us-gaap_SaleOfStockNameOfTransactionDomain_AAC76A08A55E02DFAFEC2750A3378E62_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockNameOfTransactionDomain_AAC76A08A55E02DFAFEC2750A3378E62" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sale of Stock [Domain]</link:label>
    <link:label id="lab_us-gaap_SaleOfStockNameOfTransactionDomain_AAC76A08A55E02DFAFEC2750A3378E62_label_en-US" xlink:label="lab_us-gaap_SaleOfStockNameOfTransactionDomain_AAC76A08A55E02DFAFEC2750A3378E62" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Stock [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockNameOfTransactionDomain" xlink:label="loc_us-gaap_SaleOfStockNameOfTransactionDomain_AAC76A08A55E02DFAFEC2750A3378E62" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockNameOfTransactionDomain_AAC76A08A55E02DFAFEC2750A3378E62" xlink:to="lab_us-gaap_SaleOfStockNameOfTransactionDomain_AAC76A08A55E02DFAFEC2750A3378E62" xlink:type="arc" />
    <link:label id="lab_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3_terseLabel_en-US" xlink:label="lab_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2017 Registration Statement</link:label>
    <link:label id="lab_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3_label_en-US" xlink:label="lab_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Universal Registration Statement Two [Member]</link:label>
    <link:label id="lab_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3_documentation_en-US" xlink:label="lab_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Universal Registration Statement Two [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_UniversalRegistrationStatementTwoMember" xlink:label="loc_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3" xlink:to="lab_land_UniversalRegistrationStatementTwoMember_A84B010DDBC4CA16C9C82750A33713E3" xlink:type="arc" />
    <link:label id="lab_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411_terseLabel_en-US" xlink:label="lab_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Secondary Public Stock Offering</link:label>
    <link:label id="lab_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411_label_en-US" xlink:label="lab_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secondary Public Stock Offering [Member]</link:label>
    <link:label id="lab_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411_documentation_en-US" xlink:label="lab_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Secondary Public Stock Offering [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SecondaryPublicStockOfferingMember" xlink:label="loc_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411" xlink:to="lab_land_SecondaryPublicStockOfferingMember_957814FBB7AEFA449C072750A3389411" xlink:type="arc" />
    <link:label id="lab_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2_terseLabel_en-US" xlink:label="lab_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">ATM Program</link:label>
    <link:label id="lab_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2_label_en-US" xlink:label="lab_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">At Market Program [Member]</link:label>
    <link:label id="lab_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2_documentation_en-US" xlink:label="lab_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">At market program.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AtMarketProgramMember" xlink:label="loc_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2" xlink:to="lab_land_AtMarketProgramMember_8FB55BCE6347CEBB06822750A33813A2" xlink:type="arc" />
    <link:label id="lab_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D_terseLabel_en-US" xlink:label="lab_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">At Market Program 2017 Issuances</link:label>
    <link:label id="lab_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D_label_en-US" xlink:label="lab_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">At Market Program Current Period Issuances [Member]</link:label>
    <link:label id="lab_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D_documentation_en-US" xlink:label="lab_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">At Market Program Current Period Issuances [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AtMarketProgramCurrentPeriodIssuancesMember" xlink:label="loc_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D" xlink:to="lab_land_AtMarketProgramCurrentPeriodIssuancesMember_AFFDF9FB5D1F65818D1E2750A338388D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_D643760E800CECC5853C2750A339050B_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_D643760E800CECC5853C2750A339050B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock authorized and unissued (in shares)</link:label>
    <link:label id="lab_us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_D643760E800CECC5853C2750A339050B_label_en-US" xlink:label="lab_us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_D643760E800CECC5853C2750A339050B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Capital Shares Reserved for Future Issuance</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance" xlink:label="loc_us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_D643760E800CECC5853C2750A339050B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_D643760E800CECC5853C2750A339050B" xlink:to="lab_us-gaap_PreferredStockCapitalSharesReservedForFutureIssuance_D643760E800CECC5853C2750A339050B" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockLiquidationPreferenceValue_8ED960CEA90D48DB85382750A33BF0F9_terseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockLiquidationPreferenceValue_8ED960CEA90D48DB85382750A33BF0F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Preferred stock, liquidation value</link:label>
    <link:label id="lab_us-gaap_PreferredStockLiquidationPreferenceValue_8ED960CEA90D48DB85382750A33BF0F9_label_en-US" xlink:label="lab_us-gaap_PreferredStockLiquidationPreferenceValue_8ED960CEA90D48DB85382750A33BF0F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock, Liquidation Preference, Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockLiquidationPreferenceValue" xlink:label="loc_us-gaap_PreferredStockLiquidationPreferenceValue_8ED960CEA90D48DB85382750A33BF0F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockLiquidationPreferenceValue_8ED960CEA90D48DB85382750A33BF0F9" xlink:to="lab_us-gaap_PreferredStockLiquidationPreferenceValue_8ED960CEA90D48DB85382750A33BF0F9" xlink:type="arc" />
    <link:label id="lab_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5_terseLabel_en-US" xlink:label="lab_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Minimum period required to exercise, in months</link:label>
    <link:label id="lab_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5_label_en-US" xlink:label="lab_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Minimum Ownership Period Required to Convert Units Held</link:label>
    <link:label id="lab_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5_documentation_en-US" xlink:label="lab_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncontrolling Interest, Minimum Ownership Period Required to Convert Units Held</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld" xlink:label="loc_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5" xlink:to="lab_land_NoncontrollingInterestMinimumOwnershipPeriodRequiredtoConvertUnitsHeld_C3739BAB9902A6FF82872750A33D73B5" xlink:type="arc" />
    <link:label id="lab_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61_verboseLabel_en-US" xlink:label="lab_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">OP units held by non-controlling limited partners (in shares)</link:label>
    <link:label id="lab_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61_label_en-US" xlink:label="lab_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Partnership Units Held Outside</link:label>
    <link:label id="lab_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61_documentation_en-US" xlink:label="lab_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating partnership units held outside.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OperatingPartnershipUnitsHeldOutside" xlink:label="loc_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61" xlink:to="lab_land_OperatingPartnershipUnitsHeldOutside_FDE5C0A8D24A9CDFD0362750A33E0C61" xlink:type="arc" />
    <link:label id="lab_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33_terseLabel_en-US" xlink:label="lab_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OP units held by non-controlling interest limited partners (in shares)</link:label>
    <link:label id="lab_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33_label_en-US" xlink:label="lab_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Partnership Units Eligible Redemption</link:label>
    <link:label id="lab_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33_documentation_en-US" xlink:label="lab_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating Partnership Units Eligible Redemption</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OperatingPartnershipUnitsEligibleRedemption" xlink:label="loc_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33" xlink:to="lab_land_OperatingPartnershipUnitsEligibleRedemption_0F5A9428CDB86BB2FB922750A33E1E33" xlink:type="arc" />
    <link:label id="lab_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5_verboseLabel_en-US" xlink:label="lab_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Securities allowed for issuance (amount up to)</link:label>
    <link:label id="lab_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5_label_en-US" xlink:label="lab_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Value of Securities Allowed For Issuance</link:label>
    <link:label id="lab_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5_documentation_en-US" xlink:label="lab_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Value of Securities Allowed For Issuance</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ValueOfSecuritiesAllowedForIssuance" xlink:label="loc_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5" xlink:to="lab_land_ValueOfSecuritiesAllowedForIssuance_D4FD8C3EAB2359F215652750A33E3CC5" xlink:type="arc" />
    <link:label id="lab_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408_terseLabel_en-US" xlink:label="lab_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum number of securities that can be sold (in securities)</link:label>
    <link:label id="lab_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408_label_en-US" xlink:label="lab_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum Number Of Securities Can Be Sold Under Shelf Registration Statement</link:label>
    <link:label id="lab_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408_documentation_en-US" xlink:label="lab_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum Number Of Securities Can Be Sold Under Shelf Registration Statement</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement" xlink:label="loc_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408" xlink:to="lab_land_MaximumNumberOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_6969D69A737DD54B1DB62750A33EA408" xlink:type="arc" />
    <link:label id="lab_us-gaap_PartnersCapitalAccountUnitsConverted_80A1844B108A2D8ACC372750A33F4E77_terseLabel_en-US" xlink:label="lab_us-gaap_PartnersCapitalAccountUnitsConverted_80A1844B108A2D8ACC372750A33F4E77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, issued (in shares)</link:label>
    <link:label id="lab_us-gaap_PartnersCapitalAccountUnitsConverted_80A1844B108A2D8ACC372750A33F4E77_label_en-US" xlink:label="lab_us-gaap_PartnersCapitalAccountUnitsConverted_80A1844B108A2D8ACC372750A33F4E77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Partners' Capital Account, Units, Converted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PartnersCapitalAccountUnitsConverted" xlink:label="loc_us-gaap_PartnersCapitalAccountUnitsConverted_80A1844B108A2D8ACC372750A33F4E77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PartnersCapitalAccountUnitsConverted_80A1844B108A2D8ACC372750A33F4E77" xlink:to="lab_us-gaap_PartnersCapitalAccountUnitsConverted_80A1844B108A2D8ACC372750A33F4E77" xlink:type="arc" />
    <link:label id="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_B10DA05179DBA8BA40032750A33FEA98_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_B10DA05179DBA8BA40032750A33FEA98" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sale of common stock sold under sale agreement (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction" xlink:label="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_B10DA05179DBA8BA40032750A33FEA98" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_B10DA05179DBA8BA40032750A33FEA98" xlink:to="lab_us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_B10DA05179DBA8BA40032750A33FEA98" xlink:type="arc" />
    <link:label id="lab_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2_terseLabel_en-US" xlink:label="lab_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum amount authorized in Primary Offering (in shares)</link:label>
    <link:label id="lab_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2_label_en-US" xlink:label="lab_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum Amount Of Securities Can Be Sold Under Shelf Registration Statement</link:label>
    <link:label id="lab_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2_documentation_en-US" xlink:label="lab_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum Amount Of Securities Can Be Sold Under Shelf Registration Statement</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement" xlink:label="loc_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2" xlink:to="lab_land_MaximumAmountOfSecuritiesCanBeSoldUnderShelfRegistrationStatement_658D8A4AC06CA916DD882750A34091B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_SaleOfStockPricePerShare_11E5B1FBF81D2270BE6A2750A341DFE6_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockPricePerShare_11E5B1FBF81D2270BE6A2750A341DFE6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Average sales price of common stock sold (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_SaleOfStockPricePerShare_11E5B1FBF81D2270BE6A2750A341DFE6_label_en-US" xlink:label="lab_us-gaap_SaleOfStockPricePerShare_11E5B1FBF81D2270BE6A2750A341DFE6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Sale of Stock, Price Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockPricePerShare" xlink:label="loc_us-gaap_SaleOfStockPricePerShare_11E5B1FBF81D2270BE6A2750A341DFE6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockPricePerShare_11E5B1FBF81D2270BE6A2750A341DFE6" xlink:to="lab_us-gaap_SaleOfStockPricePerShare_11E5B1FBF81D2270BE6A2750A341DFE6" xlink:type="arc" />
    <link:label id="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_B2EEAEA03EB4F295D4782750A341CEC7_terseLabel_en-US" xlink:label="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_B2EEAEA03EB4F295D4782750A341CEC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from issuance of stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SaleOfStockConsiderationReceivedOnTransaction" xlink:label="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_B2EEAEA03EB4F295D4782750A341CEC7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_B2EEAEA03EB4F295D4782750A341CEC7" xlink:to="lab_us-gaap_SaleOfStockConsiderationReceivedOnTransaction_B2EEAEA03EB4F295D4782750A341CEC7" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_B313DA8806A99354D61227708B1C46A9_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_B313DA8806A99354D61227708B1C46A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net proceeds from issuance of common stock</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_B313DA8806A99354D61227708B1C46A9_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_B313DA8806A99354D61227708B1C46A9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfCommonStock" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_B313DA8806A99354D61227708B1C46A9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfCommonStock_B313DA8806A99354D61227708B1C46A9" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfCommonStock_B313DA8806A99354D61227708B1C46A9" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfStockIssuanceCosts_2855B19E2DBD85CAC77E2750A3410588_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfStockIssuanceCosts_2855B19E2DBD85CAC77E2750A3410588" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments of stock issuance costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_2855B19E2DBD85CAC77E2750A3410588" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfStockIssuanceCosts_2855B19E2DBD85CAC77E2750A3410588" xlink:to="lab_us-gaap_PaymentsOfStockIssuanceCosts_2855B19E2DBD85CAC77E2750A3410588" xlink:type="arc" />
    <link:label id="lab_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D_terseLabel_en-US" xlink:label="lab_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, value authorized</link:label>
    <link:label id="lab_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D_label_en-US" xlink:label="lab_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock Value Authorized Under Equity Offering Program</link:label>
    <link:label id="lab_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D_documentation_en-US" xlink:label="lab_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Common Stock Value Authorized Under Equity Offering Program</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CommonStockValueAuthorizedUnderEquityOfferingProgram" xlink:label="loc_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D" xlink:to="lab_land_CommonStockValueAuthorizedUnderEquityOfferingProgram_34150346EC52E07147532750A341FF3D" xlink:type="arc" />
    <link:label id="lab_us-gaap_SharesIssuedPricePerShare_0BEA4DB714574EB72C3A2750A342865B_verboseLabel_en-US" xlink:label="lab_us-gaap_SharesIssuedPricePerShare_0BEA4DB714574EB72C3A2750A342865B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Average sales price (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SharesIssuedPricePerShare" xlink:label="loc_us-gaap_SharesIssuedPricePerShare_0BEA4DB714574EB72C3A2750A342865B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SharesIssuedPricePerShare_0BEA4DB714574EB72C3A2750A342865B" xlink:to="lab_us-gaap_SharesIssuedPricePerShare_0BEA4DB714574EB72C3A2750A342865B" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockValueOutstanding_F166C7D183C4741A19CC2750A342064A_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockValueOutstanding_F166C7D183C4741A19CC2750A342064A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, value, outstanding</link:label>
    <link:label id="lab_us-gaap_CommonStockValueOutstanding_F166C7D183C4741A19CC2750A342064A_label_en-US" xlink:label="lab_us-gaap_CommonStockValueOutstanding_F166C7D183C4741A19CC2750A342064A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Value, Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockValueOutstanding" xlink:label="loc_us-gaap_CommonStockValueOutstanding_F166C7D183C4741A19CC2750A342064A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockValueOutstanding_F166C7D183C4741A19CC2750A342064A" xlink:to="lab_us-gaap_CommonStockValueOutstanding_F166C7D183C4741A19CC2750A342064A" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount_9CF8BFF970A175C5904C2750A343B60D_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount_9CF8BFF970A175C5904C2750A343B60D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Common stock, value, issued</link:label>
    <link:label id="lab_us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount_9CF8BFF970A175C5904C2750A343B60D_label_en-US" xlink:label="lab_us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount_9CF8BFF970A175C5904C2750A343B60D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stocks, Including Additional Paid in Capital, Net of Discount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount" xlink:label="loc_us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount_9CF8BFF970A175C5904C2750A343B60D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount_9CF8BFF970A175C5904C2750A343B60D" xlink:to="lab_us-gaap_CommonStocksIncludingAdditionalPaidInCapitalNetOfDiscount_9CF8BFF970A175C5904C2750A343B60D" xlink:type="arc" />
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_DDEC4F4BD14A68DD5B4635550884D22E_terseLabel_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_65B0BC48476854BCA5B7A70DE75E1E2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business and Organization</link:label>
    <link:label id="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_DDEC4F4BD14A68DD5B4635550884D22E_label_en-US" xlink:label="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_65B0BC48476854BCA5B7A70DE75E1E2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock" xlink:label="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_65B0BC48476854BCA5B7A70DE75E1E2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_65B0BC48476854BCA5B7A70DE75E1E2C" xlink:to="lab_us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_65B0BC48476854BCA5B7A70DE75E1E2C" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87E57584C0E6AD5489E427A9DD8EADDE_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87E57584C0E6AD5489E427A9DD8EADDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Line of credit facility, maximum borrowing capacity</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87E57584C0E6AD5489E427A9DD8EADDE_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87E57584C0E6AD5489E427A9DD8EADDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87E57584C0E6AD5489E427A9DD8EADDE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87E57584C0E6AD5489E427A9DD8EADDE" xlink:to="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_87E57584C0E6AD5489E427A9DD8EADDE" xlink:type="arc" />
    <link:label id="lab_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B_terseLabel_en-US" xlink:label="lab_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of OP Units Tendered for Redemption</link:label>
    <link:label id="lab_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B_label_en-US" xlink:label="lab_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Equity Redemption [Table Text Block]</link:label>
    <link:label id="lab_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B_documentation_en-US" xlink:label="lab_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule Of Equity Redemption [Table Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ScheduleOfEquityRedemptionTableTextBlock" xlink:label="loc_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B" xlink:to="lab_land_ScheduleOfEquityRedemptionTableTextBlock_BE3B1E3EC8D43B6B6CD72155FDF3B70B" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsDeclaredTableTextBlock_57F44B68B2750876EABB1FBE435ED60A_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsDeclaredTableTextBlock_57F44B68B2750876EABB1FBE435ED60A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Monthly Distributions Declared and Paid by Company's Board of Directors</link:label>
    <link:label id="lab_us-gaap_DividendsDeclaredTableTextBlock_57F44B68B2750876EABB1FBE435ED60A_label_en-US" xlink:label="lab_us-gaap_DividendsDeclaredTableTextBlock_57F44B68B2750876EABB1FBE435ED60A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends Declared [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsDeclaredTableTextBlock" xlink:label="loc_us-gaap_DividendsDeclaredTableTextBlock_57F44B68B2750876EABB1FBE435ED60A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsDeclaredTableTextBlock_57F44B68B2750876EABB1FBE435ED60A" xlink:to="lab_us-gaap_DividendsDeclaredTableTextBlock_57F44B68B2750876EABB1FBE435ED60A" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_22BE07A0BC04E293C3771FBE435EDFCF_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_22BE07A0BC04E293C3771FBE435EDFCF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Distributions on Common Stock</link:label>
    <link:label id="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_22BE07A0BC04E293C3771FBE435EDFCF_label_en-US" xlink:label="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_22BE07A0BC04E293C3771FBE435EDFCF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Stockholders Equity [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfStockholdersEquityTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_22BE07A0BC04E293C3771FBE435EDFCF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_22BE07A0BC04E293C3771FBE435EDFCF" xlink:to="lab_us-gaap_ScheduleOfStockholdersEquityTableTextBlock_22BE07A0BC04E293C3771FBE435EDFCF" xlink:type="arc" />
    <link:label id="lab_us-gaap_QuarterlyFinancialInformationTextBlock_96995D4BA7004A472EE6220153B989B9_terseLabel_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialInformationTextBlock_96995D4BA7004A472EE6220153B989B9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Quarterly Financial Information (unaudited)</link:label>
    <link:label id="lab_us-gaap_QuarterlyFinancialInformationTextBlock_96995D4BA7004A472EE6220153B989B9_label_en-US" xlink:label="lab_us-gaap_QuarterlyFinancialInformationTextBlock_96995D4BA7004A472EE6220153B989B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Quarterly Financial Information [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_QuarterlyFinancialInformationTextBlock" xlink:label="loc_us-gaap_QuarterlyFinancialInformationTextBlock_96995D4BA7004A472EE6220153B989B9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_QuarterlyFinancialInformationTextBlock_96995D4BA7004A472EE6220153B989B9" xlink:to="lab_us-gaap_QuarterlyFinancialInformationTextBlock_96995D4BA7004A472EE6220153B989B9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable_A0997BC103723656877A1FBE42EE8023_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable_A0997BC103723656877A1FBE42EE8023" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Schedule of Limited Partners' Capital Account by Class [Table]</link:label>
    <link:label id="lab_us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable_A0997BC103723656877A1FBE42EE8023_label_en-US" xlink:label="lab_us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable_A0997BC103723656877A1FBE42EE8023" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Limited Partners' Capital Account by Class [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable" xlink:label="loc_us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable_A0997BC103723656877A1FBE42EE8023" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable_A0997BC103723656877A1FBE42EE8023" xlink:to="lab_us-gaap_ScheduleOfLimitedPartnersCapitalAccountByClassTable_A0997BC103723656877A1FBE42EE8023" xlink:type="arc" />
    <link:label id="lab_us-gaap_LimitedPartnersCapitalAccountLineItems_1AAF1577D5ABA2126F3C1FBE42F16D03_terseLabel_en-US" xlink:label="lab_us-gaap_LimitedPartnersCapitalAccountLineItems_1AAF1577D5ABA2126F3C1FBE42F16D03" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Limited Partners' Capital Account [Line Items]</link:label>
    <link:label id="lab_us-gaap_LimitedPartnersCapitalAccountLineItems_1AAF1577D5ABA2126F3C1FBE42F16D03_label_en-US" xlink:label="lab_us-gaap_LimitedPartnersCapitalAccountLineItems_1AAF1577D5ABA2126F3C1FBE42F16D03" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Limited Partners' Capital Account [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LimitedPartnersCapitalAccountLineItems" xlink:label="loc_us-gaap_LimitedPartnersCapitalAccountLineItems_1AAF1577D5ABA2126F3C1FBE42F16D03" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LimitedPartnersCapitalAccountLineItems_1AAF1577D5ABA2126F3C1FBE42F16D03" xlink:to="lab_us-gaap_LimitedPartnersCapitalAccountLineItems_1AAF1577D5ABA2126F3C1FBE42F16D03" xlink:type="arc" />
    <link:label id="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_34CC067C85D340CAAFE21FBE42F18D58_verboseLabel_en-US" xlink:label="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_34CC067C85D340CAAFE21FBE42F18D58" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">OP Units Tendered for Redemption (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PartnersCapitalAccountUnitsRedeemed" xlink:label="loc_us-gaap_PartnersCapitalAccountUnitsRedeemed_34CC067C85D340CAAFE21FBE42F18D58" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PartnersCapitalAccountUnitsRedeemed_34CC067C85D340CAAFE21FBE42F18D58" xlink:to="lab_us-gaap_PartnersCapitalAccountUnitsRedeemed_34CC067C85D340CAAFE21FBE42F18D58" xlink:type="arc" />
    <link:label id="lab_us-gaap_PartnersCapitalAccountUnitsConverted_2FF827935F04E1861F6F1FBE42F17F0F_verboseLabel_en-US" xlink:label="lab_us-gaap_PartnersCapitalAccountUnitsConverted_2FF827935F04E1861F6F1FBE42F17F0F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Shares of Common Stock Issued (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PartnersCapitalAccountUnitsConverted" xlink:label="loc_us-gaap_PartnersCapitalAccountUnitsConverted_2FF827935F04E1861F6F1FBE42F17F0F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PartnersCapitalAccountUnitsConverted_2FF827935F04E1861F6F1FBE42F17F0F" xlink:to="lab_us-gaap_PartnersCapitalAccountUnitsConverted_2FF827935F04E1861F6F1FBE42F17F0F" xlink:type="arc" />
    <link:label id="lab_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E_verboseLabel_en-US" xlink:label="lab_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">OP Units Redeemed with Cash (in shares)</link:label>
    <link:label id="lab_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E_label_en-US" xlink:label="lab_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Partners' Capital Account, Units, Redeemed for Cash</link:label>
    <link:label id="lab_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E_documentation_en-US" xlink:label="lab_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Partners' Capital Account, Units, Redeemed for Cash</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PartnersCapitalAccountUnitsRedeemedforCash" xlink:label="loc_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E" xlink:to="lab_land_PartnersCapitalAccountUnitsRedeemedforCash_0A6D749E063A83BC7DAC1FBE42F2179E" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_9723143F3FEBF6BDC8B6214DF98B5FB7_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_9723143F3FEBF6BDC8B6214DF98B5FB7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Cash Payment</link:label>
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_9723143F3FEBF6BDC8B6214DF98B5FB7_label_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_9723143F3FEBF6BDC8B6214DF98B5FB7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Redeemable Preferred Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_9723143F3FEBF6BDC8B6214DF98B5FB7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_9723143F3FEBF6BDC8B6214DF98B5FB7" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_9723143F3FEBF6BDC8B6214DF98B5FB7" xlink:type="arc" />
    <link:label id="lab_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D_terseLabel_en-US" xlink:label="lab_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate Cash Paid per OP Unit (in dollars per share)</link:label>
    <link:label id="lab_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D_label_en-US" xlink:label="lab_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Redeemable Preferred Stock, Per Share</link:label>
    <link:label id="lab_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D_documentation_en-US" xlink:label="lab_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Payments for Repurchase of Redeemable Preferred Stock, Per Share</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare" xlink:label="loc_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D" xlink:to="lab_land_PaymentsforRepurchaseofRedeemablePreferredStockPerShare_47FE579BBE41B25C9B0521509CEA328D" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_DE9C1FBA8F4760D90CF3167EB9DCD882_terseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_DE9C1FBA8F4760D90CF3167EB9DCD882" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Net income (loss) attributable to the Company</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_DE9C1FBA8F4760D90CF3167EB9DCD882_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_DE9C1FBA8F4760D90CF3167EB9DCD882" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_DE9C1FBA8F4760D90CF3167EB9DCD882" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_DE9C1FBA8F4760D90CF3167EB9DCD882" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_DE9C1FBA8F4760D90CF3167EB9DCD882" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_9F525461E546634A1DFB15B4ADD6621E_terseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_9F525461E546634A1DFB15B4ADD6621E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average common shares outstanding - basic and diluted (in shares)</link:label>
    <link:label id="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_9F525461E546634A1DFB15B4ADD6621E_label_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_9F525461E546634A1DFB15B4ADD6621E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Shares Outstanding, Basic and Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_9F525461E546634A1DFB15B4ADD6621E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_9F525461E546634A1DFB15B4ADD6621E" xlink:to="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_9F525461E546634A1DFB15B4ADD6621E" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_1FBA18FE79B34EBD238A15B4ADD66B4E_verboseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_1FBA18FE79B34EBD238A15B4ADD66B4E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic and diluted earnings (loss) per common share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_1FBA18FE79B34EBD238A15B4ADD66B4E_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_1FBA18FE79B34EBD238A15B4ADD66B4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic and Diluted</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDiluted_1FBA18FE79B34EBD238A15B4ADD66B4E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDiluted_1FBA18FE79B34EBD238A15B4ADD66B4E" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDiluted_1FBA18FE79B34EBD238A15B4ADD66B4E" xlink:type="arc" />
    <link:label id="lab_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899_terseLabel_en-US" xlink:label="lab_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average number of operating partnership units held by non-controlling interest (in shares)</link:label>
    <link:label id="lab_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899_label_en-US" xlink:label="lab_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Operating Partnership Units Held By Noncontrolling Interest</link:label>
    <link:label id="lab_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899_documentation_en-US" xlink:label="lab_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Weighted Average Number of Operating Partnership Units Held By Noncontrolling Interest</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest" xlink:label="loc_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899" xlink:to="lab_land_WeightedAverageNumberOfOperatingPartnershipUnitsHeldByNoncontrollingInterest_E7B149BA69C97BED523815B4ADD6C899" xlink:type="arc" />
    <link:label id="lab_us-gaap_SecuredDebtMember_3C3CB3C1978C32615D39265DAFF3795B_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_3C3CB3C1978C32615D39265DAFF3795B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bonds payable</link:label>
    <link:label id="lab_us-gaap_SecuredDebtMember_3C3CB3C1978C32615D39265DAFF3795B_label_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_3C3CB3C1978C32615D39265DAFF3795B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SecuredDebtMember" xlink:label="loc_us-gaap_SecuredDebtMember_3C3CB3C1978C32615D39265DAFF3795B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SecuredDebtMember_3C3CB3C1978C32615D39265DAFF3795B" xlink:to="lab_us-gaap_SecuredDebtMember_3C3CB3C1978C32615D39265DAFF3795B" xlink:type="arc" />
    <link:label id="lab_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13_terseLabel_en-US" xlink:label="lab_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-rate notes payable</link:label>
    <link:label id="lab_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13_label_en-US" xlink:label="lab_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed-rate Mortgage Notes Payable [Member]</link:label>
    <link:label id="lab_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13_documentation_en-US" xlink:label="lab_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed-rate Mortgage Notes Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FixedrateMortgageNotesPayableMember" xlink:label="loc_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13" xlink:to="lab_land_FixedrateMortgageNotesPayableMember_46B27B7E3CA3334BF2C1265DAFF5FA13" xlink:type="arc" />
    <link:label id="lab_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE_terseLabel_en-US" xlink:label="lab_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed-rate bonds payable</link:label>
    <link:label id="lab_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE_label_en-US" xlink:label="lab_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fixed-rate Bonds Payable [Member]</link:label>
    <link:label id="lab_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE_documentation_en-US" xlink:label="lab_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fixed-rate Bonds Payable [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FixedrateBondsPayableMember" xlink:label="loc_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE" xlink:to="lab_land_FixedrateBondsPayableMember_43B9A55DAE05CC252764265DAFF5FFFE" xlink:type="arc" />
    <link:label id="lab_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF_terseLabel_en-US" xlink:label="lab_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Variable-rate revolving lines of credit</link:label>
    <link:label id="lab_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF_label_en-US" xlink:label="lab_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Variable-rate Line of Credit [Member]</link:label>
    <link:label id="lab_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF_documentation_en-US" xlink:label="lab_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Variable-rate line of credit [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_VariablerateLineofCreditMember" xlink:label="loc_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF" xlink:to="lab_land_VariablerateLineofCreditMember_DC08F64937BC236BBFB8265DAFF54CAF" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityAxis_A757686B968597843BB6265DAFF54153_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_A757686B968597843BB6265DAFF54153" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility [Axis]</link:label>
    <link:label id="lab_us-gaap_CreditFacilityAxis_A757686B968597843BB6265DAFF54153_label_en-US" xlink:label="lab_us-gaap_CreditFacilityAxis_A757686B968597843BB6265DAFF54153" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityAxis" xlink:label="loc_us-gaap_CreditFacilityAxis_A757686B968597843BB6265DAFF54153" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityAxis_A757686B968597843BB6265DAFF54153" xlink:to="lab_us-gaap_CreditFacilityAxis_A757686B968597843BB6265DAFF54153" xlink:type="arc" />
    <link:label id="lab_us-gaap_CreditFacilityDomain_0BF32378DB45C68359D9265DAFF675B6_terseLabel_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_0BF32378DB45C68359D9265DAFF675B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
    <link:label id="lab_us-gaap_CreditFacilityDomain_0BF32378DB45C68359D9265DAFF675B6_label_en-US" xlink:label="lab_us-gaap_CreditFacilityDomain_0BF32378DB45C68359D9265DAFF675B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit Facility [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CreditFacilityDomain" xlink:label="loc_us-gaap_CreditFacilityDomain_0BF32378DB45C68359D9265DAFF675B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CreditFacilityDomain_0BF32378DB45C68359D9265DAFF675B6" xlink:to="lab_us-gaap_CreditFacilityDomain_0BF32378DB45C68359D9265DAFF675B6" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_24C0381251D2DF6DE80C265DAFF638FA_terseLabel_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_24C0381251D2DF6DE80C265DAFF638FA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revolving credit facility</link:label>
    <link:label id="lab_us-gaap_RevolvingCreditFacilityMember_24C0381251D2DF6DE80C265DAFF638FA_label_en-US" xlink:label="lab_us-gaap_RevolvingCreditFacilityMember_24C0381251D2DF6DE80C265DAFF638FA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revolving Credit Facility [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevolvingCreditFacilityMember" xlink:label="loc_us-gaap_RevolvingCreditFacilityMember_24C0381251D2DF6DE80C265DAFF638FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevolvingCreditFacilityMember_24C0381251D2DF6DE80C265DAFF638FA" xlink:to="lab_us-gaap_RevolvingCreditFacilityMember_24C0381251D2DF6DE80C265DAFF638FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtInstrumentCarryingAmount_D2503C14283A3C471FDF265DAFF8B413_verboseLabel_en-US" xlink:label="lab_us-gaap_DebtInstrumentCarryingAmount_D2503C14283A3C471FDF265DAFF8B413" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total borrowings, gross</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_D2503C14283A3C471FDF265DAFF8B413" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_D2503C14283A3C471FDF265DAFF8B413" xlink:to="lab_us-gaap_DebtInstrumentCarryingAmount_D2503C14283A3C471FDF265DAFF8B413" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredFinanceCostsNet_D4CE8F1B13EDD5A74066265DAFF8A6FA_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_DeferredFinanceCostsNet_D4CE8F1B13EDD5A74066265DAFF8A6FA" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Deferred financing costs related to mortgage notes and bonds payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_D4CE8F1B13EDD5A74066265DAFF8A6FA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredFinanceCostsNet_D4CE8F1B13EDD5A74066265DAFF8A6FA" xlink:to="lab_us-gaap_DeferredFinanceCostsNet_D4CE8F1B13EDD5A74066265DAFF8A6FA" xlink:type="arc" />
    <link:label id="lab_us-gaap_LongTermDebt_E84E4B2C2D3AE5C9F8EB265DAFF88858_totalLabel_en-US" xlink:label="lab_us-gaap_LongTermDebt_E84E4B2C2D3AE5C9F8EB265DAFF88858" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total borrowings, net</link:label>
    <link:label id="lab_us-gaap_LongTermDebt_E84E4B2C2D3AE5C9F8EB265DAFF88858_label_en-US" xlink:label="lab_us-gaap_LongTermDebt_E84E4B2C2D3AE5C9F8EB265DAFF88858" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long-term Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LongTermDebt" xlink:label="loc_us-gaap_LongTermDebt_E84E4B2C2D3AE5C9F8EB265DAFF88858" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongTermDebt_E84E4B2C2D3AE5C9F8EB265DAFF88858" xlink:to="lab_us-gaap_LongTermDebt_E84E4B2C2D3AE5C9F8EB265DAFF88858" xlink:type="arc" />
    <link:label id="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_2CE6085DD95A885CF93F265DAFF9F51A_verboseLabel_en-US" xlink:label="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_2CE6085DD95A885CF93F265DAFF9F51A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Aggregate net book value</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet" xlink:label="loc_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_2CE6085DD95A885CF93F265DAFF9F51A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_2CE6085DD95A885CF93F265DAFF9F51A" xlink:to="lab_land_SecScheduleIiiRealEstateInvestmentPropertyIncludingIntangibleAssetsNet_2CE6085DD95A885CF93F265DAFF9F51A" xlink:type="arc" />
    <link:label id="lab_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0_terseLabel_en-US" xlink:label="lab_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Weighted average interest rate on borrowings (as percent)</link:label>
    <link:label id="lab_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0_label_en-US" xlink:label="lab_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Instrument Weighted Average Interest Rate</link:label>
    <link:label id="lab_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0_documentation_en-US" xlink:label="lab_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Debt instrument weighted average interest rate.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DebtInstrumentWeightedAverageInterestRate" xlink:label="loc_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0" xlink:to="lab_land_DebtInstrumentWeightedAverageInterestRate_DDA742872137C01898AF265DAFF9E6D0" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeStatementAbstract_F48FDBDA6E0E8B1EE3F726298B82A998_label_en-US" xlink:label="lab_us-gaap_IncomeStatementAbstract_F48FDBDA6E0E8B1EE3F726298B82A998" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Statement [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeStatementAbstract" xlink:label="loc_us-gaap_IncomeStatementAbstract_F48FDBDA6E0E8B1EE3F726298B82A998" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeStatementAbstract_F48FDBDA6E0E8B1EE3F726298B82A998" xlink:to="lab_us-gaap_IncomeStatementAbstract_F48FDBDA6E0E8B1EE3F726298B82A998" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenuesAbstract_AAC39221BB28FB0DFFD226298B82B53A_terseLabel_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_AAC39221BB28FB0DFFD226298B82B53A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OPERATING REVENUES:</link:label>
    <link:label id="lab_us-gaap_RevenuesAbstract_AAC39221BB28FB0DFFD226298B82B53A_label_en-US" xlink:label="lab_us-gaap_RevenuesAbstract_AAC39221BB28FB0DFFD226298B82B53A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenuesAbstract" xlink:label="loc_us-gaap_RevenuesAbstract_AAC39221BB28FB0DFFD226298B82B53A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenuesAbstract_AAC39221BB28FB0DFFD226298B82B53A" xlink:to="lab_us-gaap_RevenuesAbstract_AAC39221BB28FB0DFFD226298B82B53A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue_5993C88A18681E3582DD26298B82151E_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue_5993C88A18681E3582DD26298B82151E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fixed rents</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue_5993C88A18681E3582DD26298B82151E_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue_5993C88A18681E3582DD26298B82151E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Income Statement, Minimum Lease Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue" xlink:label="loc_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue_5993C88A18681E3582DD26298B82151E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue_5993C88A18681E3582DD26298B82151E" xlink:to="lab_us-gaap_OperatingLeasesIncomeStatementMinimumLeaseRevenue_5993C88A18681E3582DD26298B82151E" xlink:type="arc" />
    <link:label id="lab_us-gaap_PercentageRent_DB687ACC3A4AC874289726298B82E1EB_terseLabel_en-US" xlink:label="lab_us-gaap_PercentageRent_DB687ACC3A4AC874289726298B82E1EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Participation rents</link:label>
    <link:label id="lab_us-gaap_PercentageRent_DB687ACC3A4AC874289726298B82E1EB_label_en-US" xlink:label="lab_us-gaap_PercentageRent_DB687ACC3A4AC874289726298B82E1EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Income Statement, Percentage Revenue</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PercentageRent" xlink:label="loc_us-gaap_PercentageRent_DB687ACC3A4AC874289726298B82E1EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PercentageRent_DB687ACC3A4AC874289726298B82E1EB" xlink:to="lab_us-gaap_PercentageRent_DB687ACC3A4AC874289726298B82E1EB" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_D25B8B452CC883D4E1C026298B827C42_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_D25B8B452CC883D4E1C026298B827C42" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total rental revenues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesIncomeStatementLeaseRevenue" xlink:label="loc_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_D25B8B452CC883D4E1C026298B827C42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_D25B8B452CC883D4E1C026298B827C42" xlink:to="lab_us-gaap_OperatingLeasesIncomeStatementLeaseRevenue_D25B8B452CC883D4E1C026298B827C42" xlink:type="arc" />
    <link:label id="lab_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A_terseLabel_en-US" xlink:label="lab_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant recovery revenue</link:label>
    <link:label id="lab_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A_label_en-US" xlink:label="lab_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Tenant Recovery Revenue</link:label>
    <link:label id="lab_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A_documentation_en-US" xlink:label="lab_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Tenant Recovery Revenue</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TenantRecoveryRevenue" xlink:label="loc_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A" xlink:to="lab_land_TenantRecoveryRevenue_187997ACE9CE1527F3E926298B82750A" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherOperatingIncome_BB835395AF4FB5B6B02726298B829105_terseLabel_en-US" xlink:label="lab_us-gaap_OtherOperatingIncome_BB835395AF4FB5B6B02726298B829105" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other operating revenues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherOperatingIncome" xlink:label="loc_us-gaap_OtherOperatingIncome_BB835395AF4FB5B6B02726298B829105" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherOperatingIncome_BB835395AF4FB5B6B02726298B829105" xlink:to="lab_us-gaap_OtherOperatingIncome_BB835395AF4FB5B6B02726298B829105" xlink:type="arc" />
    <link:label id="lab_us-gaap_Revenues_8CAE3DD3F88ACA22BAC026298B82E41F_terseLabel_en-US" xlink:label="lab_us-gaap_Revenues_8CAE3DD3F88ACA22BAC026298B82E41F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total operating revenues</link:label>
    <link:label id="lab_us-gaap_Revenues_8CAE3DD3F88ACA22BAC026298B82E41F_label_en-US" xlink:label="lab_us-gaap_Revenues_8CAE3DD3F88ACA22BAC026298B82E41F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_8CAE3DD3F88ACA22BAC026298B82E41F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Revenues_8CAE3DD3F88ACA22BAC026298B82E41F" xlink:to="lab_us-gaap_Revenues_8CAE3DD3F88ACA22BAC026298B82E41F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_41FCA985F1B68C34599C26298B826798_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_41FCA985F1B68C34599C26298B826798" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OPERATING EXPENSES:</link:label>
    <link:label id="lab_us-gaap_OperatingExpensesAbstract_41FCA985F1B68C34599C26298B826798_label_en-US" xlink:label="lab_us-gaap_OperatingExpensesAbstract_41FCA985F1B68C34599C26298B826798" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpensesAbstract" xlink:label="loc_us-gaap_OperatingExpensesAbstract_41FCA985F1B68C34599C26298B826798" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpensesAbstract_41FCA985F1B68C34599C26298B826798" xlink:to="lab_us-gaap_OperatingExpensesAbstract_41FCA985F1B68C34599C26298B826798" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_21E5B2C836ECE659C0D026298B8222EF_terseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_21E5B2C836ECE659C0D026298B8222EF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_21E5B2C836ECE659C0D026298B8222EF_label_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_21E5B2C836ECE659C0D026298B8222EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Depreciation, Depletion and Amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_21E5B2C836ECE659C0D026298B8222EF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortization_21E5B2C836ECE659C0D026298B8222EF" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortization_21E5B2C836ECE659C0D026298B8222EF" xlink:type="arc" />
    <link:label id="lab_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9_terseLabel_en-US" xlink:label="lab_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property operating expenses</link:label>
    <link:label id="lab_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9_label_en-US" xlink:label="lab_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Operating Expenses</link:label>
    <link:label id="lab_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9_documentation_en-US" xlink:label="lab_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Property Operating Expenses</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PropertyOperatingExpenses" xlink:label="loc_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9" xlink:to="lab_land_PropertyOperatingExpenses_9DBBC6335BB25D5225B226298B8246F9" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncentiveFeeExpense_A72353A8CB01C3A1E9F826298B821619_terseLabel_en-US" xlink:label="lab_us-gaap_IncentiveFeeExpense_A72353A8CB01C3A1E9F826298B821619" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Incentive fee</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncentiveFeeExpense" xlink:label="loc_us-gaap_IncentiveFeeExpense_A72353A8CB01C3A1E9F826298B821619" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncentiveFeeExpense_A72353A8CB01C3A1E9F826298B821619" xlink:to="lab_us-gaap_IncentiveFeeExpense_A72353A8CB01C3A1E9F826298B821619" xlink:type="arc" />
    <link:label id="lab_land_AdministrationFee_3819895CB0F411C7233A26298B82980F_terseLabel_en-US" xlink:label="lab_land_AdministrationFee_3819895CB0F411C7233A26298B82980F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Administration fee</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AdministrationFee" xlink:label="loc_land_AdministrationFee_3819895CB0F411C7233A26298B82980F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AdministrationFee_3819895CB0F411C7233A26298B82980F" xlink:to="lab_land_AdministrationFee_3819895CB0F411C7233A26298B82980F" xlink:type="arc" />
    <link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_D56D37438F03535594D326298B82302E_terseLabel_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense_D56D37438F03535594D326298B82302E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">General and administrative expenses</link:label>
    <link:label id="lab_us-gaap_GeneralAndAdministrativeExpense_D56D37438F03535594D326298B82302E_label_en-US" xlink:label="lab_us-gaap_GeneralAndAdministrativeExpense_D56D37438F03535594D326298B82302E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">General and Administrative Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_D56D37438F03535594D326298B82302E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GeneralAndAdministrativeExpense_D56D37438F03535594D326298B82302E" xlink:to="lab_us-gaap_GeneralAndAdministrativeExpense_D56D37438F03535594D326298B82302E" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherGeneralExpense_4267F03381FEBA49442026298B82A6BC_terseLabel_en-US" xlink:label="lab_us-gaap_OtherGeneralExpense_4267F03381FEBA49442026298B82A6BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other operating expenses</link:label>
    <link:label id="lab_us-gaap_OtherGeneralExpense_4267F03381FEBA49442026298B82A6BC_label_en-US" xlink:label="lab_us-gaap_OtherGeneralExpense_4267F03381FEBA49442026298B82A6BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other General Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OtherGeneralExpense" xlink:label="loc_us-gaap_OtherGeneralExpense_4267F03381FEBA49442026298B82A6BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherGeneralExpense_4267F03381FEBA49442026298B82A6BC" xlink:to="lab_us-gaap_OtherGeneralExpense_4267F03381FEBA49442026298B82A6BC" xlink:type="arc" />
    <link:label id="lab_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F_totalLabel_en-US" xlink:label="lab_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total operating expenses</link:label>
    <link:label id="lab_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F_label_en-US" xlink:label="lab_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses Before Credit To Incentive Fee</link:label>
    <link:label id="lab_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F_documentation_en-US" xlink:label="lab_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating expenses before credit to incentive fee.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OperatingExpensesBeforeCreditToIncentiveFee" xlink:label="loc_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F" xlink:to="lab_land_OperatingExpensesBeforeCreditToIncentiveFee_D9551F010A64170908D326298B82420F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingExpenses_FD322CC44F392CE1917B26298B82C5E4_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingExpenses_FD322CC44F392CE1917B26298B82C5E4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total operating expenses, net of credits to fees</link:label>
    <link:label id="lab_us-gaap_OperatingExpenses_FD322CC44F392CE1917B26298B82C5E4_label_en-US" xlink:label="lab_us-gaap_OperatingExpenses_FD322CC44F392CE1917B26298B82C5E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingExpenses" xlink:label="loc_us-gaap_OperatingExpenses_FD322CC44F392CE1917B26298B82C5E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingExpenses_FD322CC44F392CE1917B26298B82C5E4" xlink:to="lab_us-gaap_OperatingExpenses_FD322CC44F392CE1917B26298B82C5E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpenseAbstract_2C0F5AA333DB499AD1C426298B82DC58_terseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpenseAbstract_2C0F5AA333DB499AD1C426298B82DC58" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">OTHER INCOME (EXPENSE):</link:label>
    <link:label id="lab_us-gaap_NonoperatingIncomeExpenseAbstract_2C0F5AA333DB499AD1C426298B82DC58_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpenseAbstract_2C0F5AA333DB499AD1C426298B82DC58" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonoperating Income (Expense) [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpenseAbstract" xlink:label="loc_us-gaap_NonoperatingIncomeExpenseAbstract_2C0F5AA333DB499AD1C426298B82DC58" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpenseAbstract_2C0F5AA333DB499AD1C426298B82DC58" xlink:to="lab_us-gaap_NonoperatingIncomeExpenseAbstract_2C0F5AA333DB499AD1C426298B82DC58" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestExpense_C62E1D613B8C9E7075C726298B8225D1_negatedLabel_en-US" xlink:label="lab_us-gaap_InterestExpense_C62E1D613B8C9E7075C726298B8225D1" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Interest expense and financing costs</link:label>
    <link:label id="lab_us-gaap_InterestExpense_C62E1D613B8C9E7075C726298B8225D1_label_en-US" xlink:label="lab_us-gaap_InterestExpense_C62E1D613B8C9E7075C726298B8225D1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpense" xlink:label="loc_us-gaap_InterestExpense_C62E1D613B8C9E7075C726298B8225D1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpense_C62E1D613B8C9E7075C726298B8225D1" xlink:to="lab_us-gaap_InterestExpense_C62E1D613B8C9E7075C726298B8225D1" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestExpenseOther_32885B5019030BE9C98A26298B826707_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_InterestExpenseOther_32885B5019030BE9C98A26298B826707" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Dividends declared on Series A cumulative term preferred stock</link:label>
    <link:label id="lab_us-gaap_InterestExpenseOther_32885B5019030BE9C98A26298B826707_label_en-US" xlink:label="lab_us-gaap_InterestExpenseOther_32885B5019030BE9C98A26298B826707" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Expense, Other</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestExpenseOther" xlink:label="loc_us-gaap_InterestExpenseOther_32885B5019030BE9C98A26298B826707" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestExpenseOther_32885B5019030BE9C98A26298B826707" xlink:to="lab_us-gaap_InterestExpenseOther_32885B5019030BE9C98A26298B826707" xlink:type="arc" />
    <link:label id="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_6F9AFB705ACAA9BA38E226298B82856E_terseLabel_en-US" xlink:label="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_6F9AFB705ACAA9BA38E226298B82856E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Property and casualty loss</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_GainLossOnBusinessInterruptionInsuranceRecovery" xlink:label="loc_land_GainLossOnBusinessInterruptionInsuranceRecovery_6F9AFB705ACAA9BA38E226298B82856E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_GainLossOnBusinessInterruptionInsuranceRecovery_6F9AFB705ACAA9BA38E226298B82856E" xlink:to="lab_land_GainLossOnBusinessInterruptionInsuranceRecovery_6F9AFB705ACAA9BA38E226298B82856E" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryWriteDown_273ABCE6F1C0FE538C6426298B82FE45_negatedLabel_en-US" xlink:label="lab_us-gaap_InventoryWriteDown_273ABCE6F1C0FE538C6426298B82FE45" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Loss on write-down of crop inventory</link:label>
    <link:label id="lab_us-gaap_InventoryWriteDown_273ABCE6F1C0FE538C6426298B82FE45_label_en-US" xlink:label="lab_us-gaap_InventoryWriteDown_273ABCE6F1C0FE538C6426298B82FE45" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Inventory Write-down</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryWriteDown" xlink:label="loc_us-gaap_InventoryWriteDown_273ABCE6F1C0FE538C6426298B82FE45" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryWriteDown_273ABCE6F1C0FE538C6426298B82FE45" xlink:to="lab_us-gaap_InventoryWriteDown_273ABCE6F1C0FE538C6426298B82FE45" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_2FD8A9FF99BEECA1D9BA26298B82A565_totalLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_2FD8A9FF99BEECA1D9BA26298B82A565" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other income (expense), net</link:label>
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_2FD8A9FF99BEECA1D9BA26298B82A565_label_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_2FD8A9FF99BEECA1D9BA26298B82A565" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Nonoperating Income (Expense)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_2FD8A9FF99BEECA1D9BA26298B82A565" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_2FD8A9FF99BEECA1D9BA26298B82A565" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_2FD8A9FF99BEECA1D9BA26298B82A565" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_E7B3A7CAF368145C836F26298B822D13_verboseLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_E7B3A7CAF368145C836F26298B822D13" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">NET INCOME (LOSS)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_E7B3A7CAF368145C836F26298B822D13" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_E7B3A7CAF368145C836F26298B822D13" xlink:to="lab_us-gaap_ProfitLoss_E7B3A7CAF368145C836F26298B822D13" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0C4658A9FBBCAE5B335626298B825636_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0C4658A9FBBCAE5B335626298B825636" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Net (income) loss attributable to non-controlling interests</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0C4658A9FBBCAE5B335626298B825636_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0C4658A9FBBCAE5B335626298B825636" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0C4658A9FBBCAE5B335626298B825636" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0C4658A9FBBCAE5B335626298B825636" xlink:to="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_0C4658A9FBBCAE5B335626298B825636" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLoss_C2FEF40F98685CFE30E626298B91BFDB_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_C2FEF40F98685CFE30E626298B91BFDB" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">NET INCOME (LOSS) ATTRIBUTABLE TO THE COMPANY</link:label>
    <link:label id="lab_us-gaap_NetIncomeLoss_C2FEF40F98685CFE30E626298B91BFDB_label_en-US" xlink:label="lab_us-gaap_NetIncomeLoss_C2FEF40F98685CFE30E626298B91BFDB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Parent</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLoss" xlink:label="loc_us-gaap_NetIncomeLoss_C2FEF40F98685CFE30E626298B91BFDB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLoss_C2FEF40F98685CFE30E626298B91BFDB" xlink:to="lab_us-gaap_NetIncomeLoss_C2FEF40F98685CFE30E626298B91BFDB" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_30C81ADBACDC5C04E66B26298B9116B9_negatedLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_30C81ADBACDC5C04E66B26298B9116B9" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Dividends declared on Series B cumulative redeemable preferred stock</link:label>
    <link:label id="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_30C81ADBACDC5C04E66B26298B9116B9_label_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_30C81ADBACDC5C04E66B26298B9116B9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Preferred Stock Dividends, Income Statement Impact</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact" xlink:label="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_30C81ADBACDC5C04E66B26298B9116B9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_30C81ADBACDC5C04E66B26298B9116B9" xlink:to="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_30C81ADBACDC5C04E66B26298B9116B9" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_BA7676342AE43C25C84326298B917A3D_totalLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_BA7676342AE43C25C84326298B917A3D" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCKHOLDERS</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_BA7676342AE43C25C84326298B917A3D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_BA7676342AE43C25C84326298B917A3D" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_BA7676342AE43C25C84326298B917A3D" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareAbstract_BACFF5F51AFD597B710826298B910836_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareAbstract_BACFF5F51AFD597B710826298B910836" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">EARNINGS (LOSS) PER COMMON SHARE:</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareAbstract" xlink:label="loc_us-gaap_EarningsPerShareAbstract_BACFF5F51AFD597B710826298B910836" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareAbstract_BACFF5F51AFD597B710826298B910836" xlink:to="lab_us-gaap_EarningsPerShareAbstract_BACFF5F51AFD597B710826298B910836" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_5E3026C94B0D7357E3BC26298B91A67B_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_5E3026C94B0D7357E3BC26298B91A67B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Basic and diluted (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDiluted_5E3026C94B0D7357E3BC26298B91A67B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDiluted_5E3026C94B0D7357E3BC26298B91A67B" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDiluted_5E3026C94B0D7357E3BC26298B91A67B" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_CA84C26F3D1E4AEEDA3326298B91E447_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_CA84C26F3D1E4AEEDA3326298B91E447" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">WEIGHTED AVERAGE SHARES OF COMMON STOCK OUTSTANDING</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_CA84C26F3D1E4AEEDA3326298B91E447_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_CA84C26F3D1E4AEEDA3326298B91E447" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share, Basic and Diluted, Other Disclosures [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_CA84C26F3D1E4AEEDA3326298B91E447" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_CA84C26F3D1E4AEEDA3326298B91E447" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDilutedOtherDisclosuresAbstract_CA84C26F3D1E4AEEDA3326298B91E447" xlink:type="arc" />
    <link:label id="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_BE5AFDC6327081117D4926298B914678_verboseLabel_en-US" xlink:label="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_BE5AFDC6327081117D4926298B914678" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Basic and diluted (in shares)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted" xlink:label="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_BE5AFDC6327081117D4926298B914678" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_BE5AFDC6327081117D4926298B914678" xlink:to="lab_us-gaap_WeightedAverageNumberOfShareOutstandingBasicAndDiluted_BE5AFDC6327081117D4926298B914678" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_F0427B52E49E1482639826298B9183DC_terseLabel_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_F0427B52E49E1482639826298B9183DC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distributions declared per common share (in dollars per share)</link:label>
    <link:label id="lab_us-gaap_CommonStockDividendsPerShareDeclared_F0427B52E49E1482639826298B9183DC_label_en-US" xlink:label="lab_us-gaap_CommonStockDividendsPerShareDeclared_F0427B52E49E1482639826298B9183DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock, Dividends, Per Share, Declared</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommonStockDividendsPerShareDeclared" xlink:label="loc_us-gaap_CommonStockDividendsPerShareDeclared_F0427B52E49E1482639826298B9183DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommonStockDividendsPerShareDeclared_F0427B52E49E1482639826298B9183DC" xlink:to="lab_us-gaap_CommonStockDividendsPerShareDeclared_F0427B52E49E1482639826298B9183DC" xlink:type="arc" />
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_B4F2631035C35CF156592200E2FB14EE_terseLabel_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_B4F2631035C35CF156592200E2FB14EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies</link:label>
    <link:label id="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_B4F2631035C35CF156592200E2FB14EE_label_en-US" xlink:label="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_B4F2631035C35CF156592200E2FB14EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commitments and Contingencies Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CommitmentsAndContingenciesDisclosureTextBlock" xlink:label="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_B4F2631035C35CF156592200E2FB14EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_B4F2631035C35CF156592200E2FB14EE" xlink:to="lab_us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_B4F2631035C35CF156592200E2FB14EE" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock_EF234C806EBE8FC3DF28165CF95526FD_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock_EF234C806EBE8FC3DF28165CF95526FD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ground Lease Obligations</link:label>
    <link:label id="lab_us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock_EF234C806EBE8FC3DF28165CF95526FD_label_en-US" xlink:label="lab_us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock_EF234C806EBE8FC3DF28165CF95526FD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Future Minimum Lease Payments for Capital Leases [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock_EF234C806EBE8FC3DF28165CF95526FD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock_EF234C806EBE8FC3DF28165CF95526FD" xlink:to="lab_us-gaap_ScheduleOfFutureMinimumLeasePaymentsForCapitalLeasesTableTextBlock_EF234C806EBE8FC3DF28165CF95526FD" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_654035C9A21ADB61F3AB1B1A4410CB64_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_654035C9A21ADB61F3AB1B1A4410CB64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate and Intangible Assets</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_654035C9A21ADB61F3AB1B1A4410CB64_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_654035C9A21ADB61F3AB1B1A4410CB64" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_654035C9A21ADB61F3AB1B1A4410CB64" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_654035C9A21ADB61F3AB1B1A4410CB64" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentDisclosureTextBlock_654035C9A21ADB61F3AB1B1A4410CB64" xlink:type="arc" />
    <link:label id="lab_us-gaap_StatementOfCashFlowsAbstract_FADC812396B2B7C27EF727A9B286DC88_label_en-US" xlink:label="lab_us-gaap_StatementOfCashFlowsAbstract_FADC812396B2B7C27EF727A9B286DC88" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Statement of Cash Flows [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_StatementOfCashFlowsAbstract" xlink:label="loc_us-gaap_StatementOfCashFlowsAbstract_FADC812396B2B7C27EF727A9B286DC88" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_StatementOfCashFlowsAbstract_FADC812396B2B7C27EF727A9B286DC88" xlink:to="lab_us-gaap_StatementOfCashFlowsAbstract_FADC812396B2B7C27EF727A9B286DC88" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_FFD858D212D68121E3D727A9B28654C8_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_FFD858D212D68121E3D727A9B28654C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CASH FLOWS FROM OPERATING ACTIVITIES:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_FFD858D212D68121E3D727A9B28654C8_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_FFD858D212D68121E3D727A9B28654C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_FFD858D212D68121E3D727A9B28654C8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_FFD858D212D68121E3D727A9B28654C8" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperationsAbstract_FFD858D212D68121E3D727A9B28654C8" xlink:type="arc" />
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A35F93790B2D3BEA459C27A9B287ED30_terseLabel_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A35F93790B2D3BEA459C27A9B287ED30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Adjustments to reconcile net income (loss) to net cash provided by operating activities:</link:label>
    <link:label id="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A35F93790B2D3BEA459C27A9B287ED30_label_en-US" xlink:label="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A35F93790B2D3BEA459C27A9B287ED30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract" xlink:label="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A35F93790B2D3BEA459C27A9B287ED30" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A35F93790B2D3BEA459C27A9B287ED30" xlink:to="lab_us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_A35F93790B2D3BEA459C27A9B287ED30" xlink:type="arc" />
    <link:label id="lab_us-gaap_DepreciationDepletionAndAmortization_FD823406574B16C889E927A9B287855E_verboseLabel_en-US" xlink:label="lab_us-gaap_DepreciationDepletionAndAmortization_FD823406574B16C889E927A9B287855E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Depreciation and amortization</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DepreciationDepletionAndAmortization" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_FD823406574B16C889E927A9B287855E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DepreciationDepletionAndAmortization_FD823406574B16C889E927A9B287855E" xlink:to="lab_us-gaap_DepreciationDepletionAndAmortization_FD823406574B16C889E927A9B287855E" xlink:type="arc" />
    <link:label id="lab_us-gaap_AmortizationOfFinancingCosts_3A6E6E7B4616C5C0BD5127A9B28855B6_terseLabel_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_3A6E6E7B4616C5C0BD5127A9B28855B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of debt issuance costs</link:label>
    <link:label id="lab_us-gaap_AmortizationOfFinancingCosts_3A6E6E7B4616C5C0BD5127A9B28855B6_label_en-US" xlink:label="lab_us-gaap_AmortizationOfFinancingCosts_3A6E6E7B4616C5C0BD5127A9B28855B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization of Debt Issuance Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_AmortizationOfFinancingCosts" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_3A6E6E7B4616C5C0BD5127A9B28855B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AmortizationOfFinancingCosts_3A6E6E7B4616C5C0BD5127A9B28855B6" xlink:to="lab_us-gaap_AmortizationOfFinancingCosts_3A6E6E7B4616C5C0BD5127A9B28855B6" xlink:type="arc" />
    <link:label id="lab_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897_terseLabel_en-US" xlink:label="lab_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amortization of deferred rent assets and liabilities, net</link:label>
    <link:label id="lab_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897_label_en-US" xlink:label="lab_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization Of Deferred Rent Asset And Liability Net</link:label>
    <link:label id="lab_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897_documentation_en-US" xlink:label="lab_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amortization of deferred rent asset and liability, net.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AmortizationOfDeferredRentAssetAndLiabilityNet" xlink:label="loc_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897" xlink:to="lab_land_AmortizationOfDeferredRentAssetAndLiabilityNet_A4A70AD0B83ED241139D27A9B2886897" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_E5796AA6DD9F990493F427A9B288208F_terseLabel_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_E5796AA6DD9F990493F427A9B288208F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bad debt expense</link:label>
    <link:label id="lab_us-gaap_ProvisionForDoubtfulAccounts_E5796AA6DD9F990493F427A9B288208F_label_en-US" xlink:label="lab_us-gaap_ProvisionForDoubtfulAccounts_E5796AA6DD9F990493F427A9B288208F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Provision for Doubtful Accounts</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProvisionForDoubtfulAccounts" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_E5796AA6DD9F990493F427A9B288208F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProvisionForDoubtfulAccounts_E5796AA6DD9F990493F427A9B288208F" xlink:to="lab_us-gaap_ProvisionForDoubtfulAccounts_E5796AA6DD9F990493F427A9B288208F" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_3907F040820D14768F0127A9B2880E26_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_3907F040820D14768F0127A9B2880E26" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">(Gain) loss on dispositions of real estate assets, net</link:label>
    <link:label id="lab_us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_3907F040820D14768F0127A9B2880E26_label_en-US" xlink:label="lab_us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_3907F040820D14768F0127A9B2880E26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Disposition of Real Estate, Discontinued Operations</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations" xlink:label="loc_us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_3907F040820D14768F0127A9B2880E26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_3907F040820D14768F0127A9B2880E26" xlink:to="lab_us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_3907F040820D14768F0127A9B2880E26" xlink:type="arc" />
    <link:label id="lab_us-gaap_InventoryWriteDown_C3096A3FA2B4CA06D7C527A9B2892ABC_terseLabel_en-US" xlink:label="lab_us-gaap_InventoryWriteDown_C3096A3FA2B4CA06D7C527A9B2892ABC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Loss on write-down of inventory</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InventoryWriteDown" xlink:label="loc_us-gaap_InventoryWriteDown_C3096A3FA2B4CA06D7C527A9B2892ABC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InventoryWriteDown_C3096A3FA2B4CA06D7C527A9B2892ABC" xlink:to="lab_us-gaap_InventoryWriteDown_C3096A3FA2B4CA06D7C527A9B2892ABC" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_05A603150A1B76BEEB0527A9B289A4C3_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_05A603150A1B76BEEB0527A9B289A4C3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Changes in operating assets and liabilities:</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_05A603150A1B76BEEB0527A9B289A4C3_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_05A603150A1B76BEEB0527A9B289A4C3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Operating Capital [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOperatingCapitalAbstract" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_05A603150A1B76BEEB0527A9B289A4C3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_05A603150A1B76BEEB0527A9B289A4C3" xlink:to="lab_us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_05A603150A1B76BEEB0527A9B289A4C3" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8C31EBBDB67C5FAC8ECE27A9B2891878_negatedLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8C31EBBDB67C5FAC8ECE27A9B2891878" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Crop inventory and Other assets, net</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8C31EBBDB67C5FAC8ECE27A9B2891878_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8C31EBBDB67C5FAC8ECE27A9B2891878" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingAssets" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8C31EBBDB67C5FAC8ECE27A9B2891878" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8C31EBBDB67C5FAC8ECE27A9B2891878" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingAssets_8C31EBBDB67C5FAC8ECE27A9B2891878" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637FC9718F0E94D9FC9B27A9B28A52F0_terseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637FC9718F0E94D9FC9B27A9B28A52F0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Accounts payable and accrued expenses and Due to related parties, net</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637FC9718F0E94D9FC9B27A9B28A52F0_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637FC9718F0E94D9FC9B27A9B28A52F0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Accounts Payable and Accrued Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637FC9718F0E94D9FC9B27A9B28A52F0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637FC9718F0E94D9FC9B27A9B28A52F0" xlink:to="lab_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_637FC9718F0E94D9FC9B27A9B28A52F0" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_D6947BE24DAAC015ED1727A9B28A5092_verboseLabel_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_D6947BE24DAAC015ED1727A9B28A5092" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other liabilities, net</link:label>
    <link:label id="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_D6947BE24DAAC015ED1727A9B28A5092_label_en-US" xlink:label="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_D6947BE24DAAC015ED1727A9B28A5092" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Increase (Decrease) in Other Operating Liabilities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncreaseDecreaseInOtherOperatingLiabilities" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_D6947BE24DAAC015ED1727A9B28A5092" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_D6947BE24DAAC015ED1727A9B28A5092" xlink:to="lab_us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_D6947BE24DAAC015ED1727A9B28A5092" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_2AB12AB92D175B1E776D27A9B28AA6A5_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_2AB12AB92D175B1E776D27A9B28AA6A5" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by operating activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_2AB12AB92D175B1E776D27A9B28AA6A5_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_2AB12AB92D175B1E776D27A9B28AA6A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Operating Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_2AB12AB92D175B1E776D27A9B28AA6A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_2AB12AB92D175B1E776D27A9B28AA6A5" xlink:to="lab_us-gaap_NetCashProvidedByUsedInOperatingActivities_2AB12AB92D175B1E776D27A9B28AA6A5" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_FDE62E9F89C2D676900327A9B28A170A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_FDE62E9F89C2D676900327A9B28A170A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CASH FLOWS FROM INVESTING ACTIVITIES:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_FDE62E9F89C2D676900327A9B28A170A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_FDE62E9F89C2D676900327A9B28A170A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_FDE62E9F89C2D676900327A9B28A170A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_FDE62E9F89C2D676900327A9B28A170A" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperationsAbstract_FDE62E9F89C2D676900327A9B28A170A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireRealEstate_608B150F8F054AD3336927A9B28B0624_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireRealEstate_608B150F8F054AD3336927A9B28B0624" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Acquisition of new real estate assets</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireRealEstate_608B150F8F054AD3336927A9B28B0624_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireRealEstate_608B150F8F054AD3336927A9B28B0624" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Real Estate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToAcquireRealEstate" xlink:label="loc_us-gaap_PaymentsToAcquireRealEstate_608B150F8F054AD3336927A9B28B0624" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireRealEstate_608B150F8F054AD3336927A9B28B0624" xlink:to="lab_us-gaap_PaymentsToAcquireRealEstate_608B150F8F054AD3336927A9B28B0624" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToDevelopRealEstateAssets_76182AB189FC476D10D127A9B28BCA04_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToDevelopRealEstateAssets_76182AB189FC476D10D127A9B28BCA04" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Capital expenditures on existing real estate assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToDevelopRealEstateAssets" xlink:label="loc_us-gaap_PaymentsToDevelopRealEstateAssets_76182AB189FC476D10D127A9B28BCA04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToDevelopRealEstateAssets_76182AB189FC476D10D127A9B28BCA04" xlink:to="lab_us-gaap_PaymentsToDevelopRealEstateAssets_76182AB189FC476D10D127A9B28BCA04" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_4C70CCE7FD0973C9EDC027A9B28BE394_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_4C70CCE7FD0973C9EDC027A9B28BE394" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maturity of short-term investment</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_4C70CCE7FD0973C9EDC027A9B28BE394_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_4C70CCE7FD0973C9EDC027A9B28BE394" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale, Maturity and Collection of Investments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments" xlink:label="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_4C70CCE7FD0973C9EDC027A9B28BE394" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_4C70CCE7FD0973C9EDC027A9B28BE394" xlink:to="lab_us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestments_4C70CCE7FD0973C9EDC027A9B28BE394" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions_D1DF5D99701DCDF7769E27A9B28CB6BB_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions_D1DF5D99701DCDF7769E27A9B28CB6BB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Change in deposits on real estate acquisitions and investments, net</link:label>
    <link:label id="lab_us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions_D1DF5D99701DCDF7769E27A9B28CB6BB_label_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions_D1DF5D99701DCDF7769E27A9B28CB6BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments for (Proceeds from) Deposits on Real Estate Acquisitions</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions" xlink:label="loc_us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions_D1DF5D99701DCDF7769E27A9B28CB6BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions_D1DF5D99701DCDF7769E27A9B28CB6BB" xlink:to="lab_us-gaap_PaymentsForProceedsFromDepositsOnRealEstateAcquisitions_D1DF5D99701DCDF7769E27A9B28CB6BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4E20887F0F1556F41DAD27A9B28C1787_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4E20887F0F1556F41DAD27A9B28C1787" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash used in investing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4E20887F0F1556F41DAD27A9B28C1787_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4E20887F0F1556F41DAD27A9B28C1787" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_4E20887F0F1556F41DAD27A9B28C1787" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_4E20887F0F1556F41DAD27A9B28C1787" xlink:to="lab_us-gaap_NetCashProvidedByUsedInInvestingActivities_4E20887F0F1556F41DAD27A9B28C1787" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_CD6B0F27AF58A84CB8C527A9B28C7B2A_terseLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_CD6B0F27AF58A84CB8C527A9B28C7B2A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">CASH FLOWS FROM FINANCING ACTIVITIES:</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_CD6B0F27AF58A84CB8C527A9B28C7B2A_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_CD6B0F27AF58A84CB8C527A9B28C7B2A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_CD6B0F27AF58A84CB8C527A9B28C7B2A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_CD6B0F27AF58A84CB8C527A9B28C7B2A" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract_CD6B0F27AF58A84CB8C527A9B28C7B2A" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfStockIssuanceCosts_88E21DF24B46AC37734A27A9B28D2D3D_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfStockIssuanceCosts_88E21DF24B46AC37734A27A9B28D2D3D" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Offering costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfStockIssuanceCosts" xlink:label="loc_us-gaap_PaymentsOfStockIssuanceCosts_88E21DF24B46AC37734A27A9B28D2D3D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfStockIssuanceCosts_88E21DF24B46AC37734A27A9B28D2D3D" xlink:to="lab_us-gaap_PaymentsOfStockIssuanceCosts_88E21DF24B46AC37734A27A9B28D2D3D" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_CAE6ABA83502D4E4368427A9B28DDE09_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_CAE6ABA83502D4E4368427A9B28DDE09" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payments for redemptions of OP Units</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_CAE6ABA83502D4E4368427A9B28DDE09" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_CAE6ABA83502D4E4368427A9B28DDE09" xlink:to="lab_us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_CAE6ABA83502D4E4368427A9B28DDE09" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfSecuredDebt_4E786FE0F20862D3684927A9B28D645C_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSecuredDebt_4E786FE0F20862D3684927A9B28D645C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings from notes and bonds payable</link:label>
    <link:label id="lab_us-gaap_ProceedsFromIssuanceOfSecuredDebt_4E786FE0F20862D3684927A9B28D645C_label_en-US" xlink:label="lab_us-gaap_ProceedsFromIssuanceOfSecuredDebt_4E786FE0F20862D3684927A9B28D645C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Issuance of Secured Debt</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromIssuanceOfSecuredDebt" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_4E786FE0F20862D3684927A9B28D645C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromIssuanceOfSecuredDebt_4E786FE0F20862D3684927A9B28D645C" xlink:to="lab_us-gaap_ProceedsFromIssuanceOfSecuredDebt_4E786FE0F20862D3684927A9B28D645C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfSecuredDebt_6173176260E33B25C86927A9B28D2399_negatedLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfSecuredDebt_6173176260E33B25C86927A9B28D2399" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Repayments of notes and bonds payable</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfSecuredDebt" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_6173176260E33B25C86927A9B28D2399" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfSecuredDebt_6173176260E33B25C86927A9B28D2399" xlink:to="lab_us-gaap_RepaymentsOfSecuredDebt_6173176260E33B25C86927A9B28D2399" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromLinesOfCredit_3B1E4BD2072707451E0027A9B28E407C_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLinesOfCredit_3B1E4BD2072707451E0027A9B28E407C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings from lines of credit</link:label>
    <link:label id="lab_us-gaap_ProceedsFromLinesOfCredit_3B1E4BD2072707451E0027A9B28E407C_label_en-US" xlink:label="lab_us-gaap_ProceedsFromLinesOfCredit_3B1E4BD2072707451E0027A9B28E407C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Lines of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProceedsFromLinesOfCredit" xlink:label="loc_us-gaap_ProceedsFromLinesOfCredit_3B1E4BD2072707451E0027A9B28E407C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromLinesOfCredit_3B1E4BD2072707451E0027A9B28E407C" xlink:to="lab_us-gaap_ProceedsFromLinesOfCredit_3B1E4BD2072707451E0027A9B28E407C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RepaymentsOfLinesOfCredit_FFF0B6F27FA463E6CC1F27A9B28E58C6_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_RepaymentsOfLinesOfCredit_FFF0B6F27FA463E6CC1F27A9B28E58C6" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Repayments of lines of credit</link:label>
    <link:label id="lab_us-gaap_RepaymentsOfLinesOfCredit_FFF0B6F27FA463E6CC1F27A9B28E58C6_label_en-US" xlink:label="lab_us-gaap_RepaymentsOfLinesOfCredit_FFF0B6F27FA463E6CC1F27A9B28E58C6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Repayments of Lines of Credit</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RepaymentsOfLinesOfCredit" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_FFF0B6F27FA463E6CC1F27A9B28E58C6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RepaymentsOfLinesOfCredit_FFF0B6F27FA463E6CC1F27A9B28E58C6" xlink:to="lab_us-gaap_RepaymentsOfLinesOfCredit_FFF0B6F27FA463E6CC1F27A9B28E58C6" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfFinancingCosts_8CBD24493D142C9C0BC727A9B28E871C_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_8CBD24493D142C9C0BC727A9B28E871C" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Payment of financing fees</link:label>
    <link:label id="lab_us-gaap_PaymentsOfFinancingCosts_8CBD24493D142C9C0BC727A9B28E871C_label_en-US" xlink:label="lab_us-gaap_PaymentsOfFinancingCosts_8CBD24493D142C9C0BC727A9B28E871C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Financing Costs</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_8CBD24493D142C9C0BC727A9B28E871C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfFinancingCosts_8CBD24493D142C9C0BC727A9B28E871C" xlink:to="lab_us-gaap_PaymentsOfFinancingCosts_8CBD24493D142C9C0BC727A9B28E871C" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_08C5EC8C3C9C757957F027A9B28EC3E4_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_08C5EC8C3C9C757957F027A9B28EC3E4" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Dividends paid on Series B cumulative redeemable preferred stock</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_08C5EC8C3C9C757957F027A9B28EC3E4_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_08C5EC8C3C9C757957F027A9B28EC3E4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Ordinary Dividends, Preferred Stock and Preference Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock" xlink:label="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_08C5EC8C3C9C757957F027A9B28EC3E4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_08C5EC8C3C9C757957F027A9B28EC3E4" xlink:to="lab_us-gaap_PaymentsOfDividendsPreferredStockAndPreferenceStock_08C5EC8C3C9C757957F027A9B28EC3E4" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_50612C89CDF5C6A921CF27A9B28E93CF_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_50612C89CDF5C6A921CF27A9B28E93CF" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Distributions paid on common stock</link:label>
    <link:label id="lab_us-gaap_PaymentsOfDividendsCommonStock_50612C89CDF5C6A921CF27A9B28E93CF_label_en-US" xlink:label="lab_us-gaap_PaymentsOfDividendsCommonStock_50612C89CDF5C6A921CF27A9B28E93CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments of Ordinary Dividends, Common Stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsOfDividendsCommonStock" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_50612C89CDF5C6A921CF27A9B28E93CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsOfDividendsCommonStock_50612C89CDF5C6A921CF27A9B28E93CF" xlink:to="lab_us-gaap_PaymentsOfDividendsCommonStock_50612C89CDF5C6A921CF27A9B28E93CF" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToMinorityShareholders_A196F5760C2D600CD6EC27A9B28E99BB_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToMinorityShareholders_A196F5760C2D600CD6EC27A9B28E99BB" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Distributions paid to non-controlling interests in Operating Partnership</link:label>
    <link:label id="lab_us-gaap_PaymentsToMinorityShareholders_A196F5760C2D600CD6EC27A9B28E99BB_label_en-US" xlink:label="lab_us-gaap_PaymentsToMinorityShareholders_A196F5760C2D600CD6EC27A9B28E99BB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Noncontrolling Interests</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PaymentsToMinorityShareholders" xlink:label="loc_us-gaap_PaymentsToMinorityShareholders_A196F5760C2D600CD6EC27A9B28E99BB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToMinorityShareholders_A196F5760C2D600CD6EC27A9B28E99BB" xlink:to="lab_us-gaap_PaymentsToMinorityShareholders_A196F5760C2D600CD6EC27A9B28E99BB" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_471E18421A802030A81927A9B28F4595_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_471E18421A802030A81927A9B28F4595" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net cash provided by financing activities</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_471E18421A802030A81927A9B28F4595_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_471E18421A802030A81927A9B28F4595" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_471E18421A802030A81927A9B28F4595" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_471E18421A802030A81927A9B28F4595" xlink:to="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_471E18421A802030A81927A9B28F4595" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_BB5D660B1FBCF194607F27A9B28F838A_totalLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_BB5D660B1FBCF194607F27A9B28F838A" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">NET INCREASE IN CASH AND CASH EQUIVALENTS</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_BB5D660B1FBCF194607F27A9B28F838A_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_BB5D660B1FBCF194607F27A9B28F838A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Period Increase (Decrease)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease" xlink:label="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_BB5D660B1FBCF194607F27A9B28F838A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_BB5D660B1FBCF194607F27A9B28F838A" xlink:to="lab_us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease_BB5D660B1FBCF194607F27A9B28F838A" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0F72B9A34F7E58A1BD6727A9B28F375D_periodStartLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0F72B9A34F7E58A1BD6727A9B28F375D" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:type="resource" xml:lang="en-US">CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_0F72B9A34F7E58A1BD6727A9B28F375D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_0F72B9A34F7E58A1BD6727A9B28F375D" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_0F72B9A34F7E58A1BD6727A9B28F375D" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_731DEABF920CA5628B3027A9B28FBE92_periodEndLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_731DEABF920CA5628B3027A9B28FBE92" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:type="resource" xml:lang="en-US">CASH AND CASH EQUIVALENTS AT END OF PERIOD</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_731DEABF920CA5628B3027A9B28FBE92" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_731DEABF920CA5628B3027A9B28FBE92" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_731DEABF920CA5628B3027A9B28FBE92" xlink:type="arc" />
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_6C58CFB38E2CDA05CB8827A9B28F7B57_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_6C58CFB38E2CDA05CB8827A9B28F7B57" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental cash flow information:</link:label>
    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_6C58CFB38E2CDA05CB8827A9B28F7B57_label_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_6C58CFB38E2CDA05CB8827A9B28F7B57" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Supplemental Cash Flow Information [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SupplementalCashFlowInformationAbstract" xlink:label="loc_us-gaap_SupplementalCashFlowInformationAbstract_6C58CFB38E2CDA05CB8827A9B28F7B57" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SupplementalCashFlowInformationAbstract_6C58CFB38E2CDA05CB8827A9B28F7B57" xlink:to="lab_us-gaap_SupplementalCashFlowInformationAbstract_6C58CFB38E2CDA05CB8827A9B28F7B57" xlink:type="arc" />
    <link:label id="lab_us-gaap_InterestPaid_AA57864C1DD72BD003EE27A9B290D725_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaid_AA57864C1DD72BD003EE27A9B290D725" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Interest paid</link:label>
    <link:label id="lab_us-gaap_InterestPaid_AA57864C1DD72BD003EE27A9B290D725_label_en-US" xlink:label="lab_us-gaap_InterestPaid_AA57864C1DD72BD003EE27A9B290D725" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Paid, Including Capitalized Interest, Operating and Investing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_InterestPaid" xlink:label="loc_us-gaap_InterestPaid_AA57864C1DD72BD003EE27A9B290D725" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InterestPaid_AA57864C1DD72BD003EE27A9B290D725" xlink:to="lab_us-gaap_InterestPaid_AA57864C1DD72BD003EE27A9B290D725" xlink:type="arc" />
    <link:label id="lab_us-gaap_NoncashInvestingAndFinancingItemsAbstract_B1D42C02AC7ECBB4443527A9B2902426_terseLabel_en-US" xlink:label="lab_us-gaap_NoncashInvestingAndFinancingItemsAbstract_B1D42C02AC7ECBB4443527A9B2902426" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Supplemental non-cash investing and financing information:</link:label>
    <link:label id="lab_us-gaap_NoncashInvestingAndFinancingItemsAbstract_B1D42C02AC7ECBB4443527A9B2902426_label_en-US" xlink:label="lab_us-gaap_NoncashInvestingAndFinancingItemsAbstract_B1D42C02AC7ECBB4443527A9B2902426" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncash Investing and Financing Items [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NoncashInvestingAndFinancingItemsAbstract" xlink:label="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_B1D42C02AC7ECBB4443527A9B2902426" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NoncashInvestingAndFinancingItemsAbstract_B1D42C02AC7ECBB4443527A9B2902426" xlink:to="lab_us-gaap_NoncashInvestingAndFinancingItemsAbstract_B1D42C02AC7ECBB4443527A9B2902426" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E_terseLabel_en-US" xlink:label="lab_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real estate additions included in Other assets, net</link:label>
    <link:label id="lab_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E_label_en-US" xlink:label="lab_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Additions Included In Other Assets</link:label>
    <link:label id="lab_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E_documentation_en-US" xlink:label="lab_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate additions included in other assets.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAdditionsIncludedInOtherAssets" xlink:label="loc_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E" xlink:to="lab_land_RealEstateAdditionsIncludedInOtherAssets_1283825491D98A1944A227A9B290759E" xlink:type="arc" />
    <link:label id="lab_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F_terseLabel_en-US" xlink:label="lab_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real estate additions included in Accounts payable and accrued expenses and Due to related parties, net</link:label>
    <link:label id="lab_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F_label_en-US" xlink:label="lab_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Additions To Real Estate Included In Accounts Payable And Accrued Expenses And Contingent Consideration Owed</link:label>
    <link:label id="lab_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F_documentation_en-US" xlink:label="lab_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Additions to real estate included in accounts payable and accrued expenses and contingent consideration owed.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed" xlink:label="loc_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F" xlink:to="lab_land_AdditionsToRealEstateIncludedInAccountsPayableAndAccruedExpensesAndContingentConsiderationOwed_2DB282A9BAE0B640E2B927A9B291C13F" xlink:type="arc" />
    <link:label id="lab_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C_terseLabel_en-US" xlink:label="lab_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain (loss) on dispositions of real estate assets, net included in Accounts payable and accrued expenses and Due to related parties, net</link:label>
    <link:label id="lab_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C_label_en-US" xlink:label="lab_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Loss On Disposal Of Real Estate Asset Included In Accounts Payable, Accrued Expenses, And Due To Related Parties</link:label>
    <link:label id="lab_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C_documentation_en-US" xlink:label="lab_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Loss On Disposal Of Real Estate Asset Included In Accounts Payable, Accrued Expenses, And Due To Related Parties</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties" xlink:label="loc_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C" xlink:to="lab_land_LossOnDisposalOfRealEstateAssetIncludedInAccountsPayableAccruedExpensesAndDueToRelatedParties_0FA3D488D92C861D29FC27A9B291FA1C" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1_terseLabel_en-US" xlink:label="lab_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real estate additions included in Other liabilities, net</link:label>
    <link:label id="lab_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1_label_en-US" xlink:label="lab_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Additions Included In Other Liabilities</link:label>
    <link:label id="lab_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1_documentation_en-US" xlink:label="lab_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate additions included in Other liabilities.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAdditionsIncludedInOtherLiabilities" xlink:label="loc_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1" xlink:to="lab_land_RealEstateAdditionsIncludedInOtherLiabilities_ABDC4CAAFB640B1C396C27A9B291A7F1" xlink:type="arc" />
    <link:label id="lab_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A_terseLabel_en-US" xlink:label="lab_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Stock offering and OP Unit issuance costs included in Accounts payable and accrued expenses and Due to related parties, net</link:label>
    <link:label id="lab_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A_label_en-US" xlink:label="lab_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Stock Offering And Operating Partnership Unit Issuance Costs Included In Accounts Payable And Accrued Expenses</link:label>
    <link:label id="lab_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A_documentation_en-US" xlink:label="lab_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Common stock offering and operating partnership unit issuance costs included in accounts payable and accrued expenses.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses" xlink:label="loc_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A" xlink:to="lab_land_CommonStockOfferingAndOperatingPartnershipUnitIssuanceCostsIncludedInAccountsPayableAndAccruedExpenses_0311DDC8DF305E01728027A9B291776A" xlink:type="arc" />
    <link:label id="lab_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807_terseLabel_en-US" xlink:label="lab_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing costs included in Accounts payable and accrued expenses and Due to related parties, net</link:label>
    <link:label id="lab_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807_label_en-US" xlink:label="lab_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Financing Fees Included In Accounts Payable and Accrued Liabilities</link:label>
    <link:label id="lab_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807_documentation_en-US" xlink:label="lab_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Financing fees included in accounts payable and accrued liabilities.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities" xlink:label="loc_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807" xlink:to="lab_land_FinancingFeesIncludedInAccountsPayableAndAccruedLiabilities_6AF0294C94E245E7D21927A9B2910807" xlink:type="arc" />
    <link:label id="lab_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636_terseLabel_en-US" xlink:label="lab_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Escrow proceeds from asset sale used for acquisition of new real estate assets</link:label>
    <link:label id="lab_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636_label_en-US" xlink:label="lab_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Escrow Proceeds From Asset Sale</link:label>
    <link:label id="lab_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636_documentation_en-US" xlink:label="lab_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Escrow Proceeds From Asset Sale</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EscrowProceedsFromAssetSale" xlink:label="loc_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636" xlink:to="lab_land_EscrowProceedsFromAssetSale_06C3A8E7017B05519C4027A9B2914636" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_1463356EC50A7F265FCD2200E2DE8569_terseLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_1463356EC50A7F265FCD2200E2DE8569" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Earnings (Loss) Per Share of Common Stock</link:label>
    <link:label id="lab_us-gaap_EarningsPerShareTextBlock_1463356EC50A7F265FCD2200E2DE8569_label_en-US" xlink:label="lab_us-gaap_EarningsPerShareTextBlock_1463356EC50A7F265FCD2200E2DE8569" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Earnings Per Share [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareTextBlock" xlink:label="loc_us-gaap_EarningsPerShareTextBlock_1463356EC50A7F265FCD2200E2DE8569" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareTextBlock_1463356EC50A7F265FCD2200E2DE8569" xlink:to="lab_us-gaap_EarningsPerShareTextBlock_1463356EC50A7F265FCD2200E2DE8569" xlink:type="arc" />
    <link:label id="lab_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6_terseLabel_en-US" xlink:label="lab_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Ventura County, California</link:label>
    <link:label id="lab_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6_label_en-US" xlink:label="lab_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Ventura County California [Member]</link:label>
    <link:label id="lab_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6_documentation_en-US" xlink:label="lab_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Ventura county California.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_VenturaCountyCaliforniaMember" xlink:label="loc_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6" xlink:to="lab_land_VenturaCountyCaliforniaMember_0B0789BA50B70650903F2807910D42F6" xlink:type="arc" />
    <link:label id="lab_us-gaap_UnsecuredDebtMember_71B52DF528EA10C871A12807910D1ECD_terseLabel_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_71B52DF528EA10C871A12807910D1ECD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unsecured Debt</link:label>
    <link:label id="lab_us-gaap_UnsecuredDebtMember_71B52DF528EA10C871A12807910D1ECD_label_en-US" xlink:label="lab_us-gaap_UnsecuredDebtMember_71B52DF528EA10C871A12807910D1ECD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Unsecured Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UnsecuredDebtMember" xlink:label="loc_us-gaap_UnsecuredDebtMember_71B52DF528EA10C871A12807910D1ECD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UnsecuredDebtMember_71B52DF528EA10C871A12807910D1ECD" xlink:to="lab_us-gaap_UnsecuredDebtMember_71B52DF528EA10C871A12807910D1ECD" xlink:type="arc" />
    <link:label id="lab_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED_terseLabel_en-US" xlink:label="lab_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of executive officers that serve as directors</link:label>
    <link:label id="lab_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED_label_en-US" xlink:label="lab_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Executive Officers That Serve As Directors</link:label>
    <link:label id="lab_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED_documentation_en-US" xlink:label="lab_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Executive Officers That Serve As Directors</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberofExecutiveOfficersThatServeAsDirectors" xlink:label="loc_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED" xlink:to="lab_land_NumberofExecutiveOfficersThatServeAsDirectors_8B891D124F604F3BBEA72807911C03ED" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E_terseLabel_en-US" xlink:label="lab_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Management fee (as percent)</link:label>
    <link:label id="lab_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E_label_en-US" xlink:label="lab_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Expected Annual Base Management Fee To Aggregate Stockholders Equity</link:label>
    <link:label id="lab_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E_documentation_en-US" xlink:label="lab_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of expected annual base management fee to aggregate stockholders equity.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity" xlink:label="loc_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E" xlink:to="lab_land_PercentageOfExpectedAnnualBaseManagementFeeToAggregateStockholdersEquity_B6A5AA56013D41A371A42807911C6D7E" xlink:type="arc" />
    <link:label id="lab_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD_terseLabel_en-US" xlink:label="lab_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hurdle rate, quarterly (as percent)</link:label>
    <link:label id="lab_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD_label_en-US" xlink:label="lab_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Incentive Fee Per Advisory Agreement</link:label>
    <link:label id="lab_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD_documentation_en-US" xlink:label="lab_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Incentive fee per advisory agreement.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_IncentiveFeePerAdvisoryAgreement" xlink:label="loc_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD" xlink:to="lab_land_IncentiveFeePerAdvisoryAgreement_33A93753976755CB554C2807911CFEAD" xlink:type="arc" />
    <link:label id="lab_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8_terseLabel_en-US" xlink:label="lab_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hurdle rate, annual (as percent)</link:label>
    <link:label id="lab_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8_label_en-US" xlink:label="lab_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Annualized Incentive Fee Per Advisory Agreement</link:label>
    <link:label id="lab_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8_documentation_en-US" xlink:label="lab_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Annualized incentive fee per advisory agreement.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AnnualizedIncentiveFeePerAdvisoryAgreement" xlink:label="loc_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8" xlink:to="lab_land_AnnualizedIncentiveFeePerAdvisoryAgreement_58CC0C30EE058EAA61B42807911C8DE8" xlink:type="arc" />
    <link:label id="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117_terseLabel_en-US" xlink:label="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-incentive Fee FFO (as percent)</link:label>
    <link:label id="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117_label_en-US" xlink:label="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount To Be Paid To Adviser In Percentage Of Pre Incentive Fee Condition One</link:label>
    <link:label id="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117_documentation_en-US" xlink:label="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount to be paid to adviser in percentage of pre incentive fee condition one.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne" xlink:label="loc_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117" xlink:to="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionOne_30363327A1BC1F888EF42807911C1117" xlink:type="arc" />
    <link:label id="lab_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D_terseLabel_en-US" xlink:label="lab_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-Incentive Fee, exceeded (as percent)</link:label>
    <link:label id="lab_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D_label_en-US" xlink:label="lab_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Pre Incentive Fee In Percentage Of Common Stockholders Equity That Awards Adviser Hundred Percent Of Amount Of Pre Incentive Fee Maximum Percentage</link:label>
    <link:label id="lab_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D_documentation_en-US" xlink:label="lab_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Pre incentive fee in percentage of common stockholders equity that awards adviser hundred percent of amount of pre incentive fee maximum percentage.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage" xlink:label="loc_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D" xlink:to="lab_land_PreIncentiveFeeInPercentageOfCommonStockholdersEquityThatAwardsAdviserHundredPercentOfAmountOfPreIncentiveFeeMaximumPercentage_2B8B87FE4C679E7377732807911CA14D" xlink:type="arc" />
    <link:label id="lab_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC_terseLabel_en-US" xlink:label="lab_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-Incentive Fee, exceeded, annual (as percent)</link:label>
    <link:label id="lab_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC_label_en-US" xlink:label="lab_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Maximum Annual Percentage Of Stockholders Equity To Pay Full Pre Incentive Fee To Adviser</link:label>
    <link:label id="lab_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC_documentation_en-US" xlink:label="lab_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum annual percentage of stockholders equity to pay full pre incentive fee to adviser.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser" xlink:label="loc_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC" xlink:to="lab_land_MaximumAnnualPercentageOfStockholdersEquityToPayFullPreIncentiveFeeToAdviser_22D7AC117C8B67E43E082807911CE8FC" xlink:type="arc" />
    <link:label id="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4_terseLabel_en-US" xlink:label="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Pre-Incentive Fee (as percent)</link:label>
    <link:label id="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4_label_en-US" xlink:label="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amount To Be Paid To Adviser In Percentage Of Pre Incentive Fee Condition Two</link:label>
    <link:label id="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4_documentation_en-US" xlink:label="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Amount to be paid to adviser in percentage of pre incentive fee condition two.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo" xlink:label="loc_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4" xlink:to="lab_land_AmountToBePaidToAdviserInPercentageOfPreIncentiveFeeConditionTwo_F5CC308DDAFB2E8C278C2807911C23A4" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B_terseLabel_en-US" xlink:label="lab_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base management fee, quarterly (as percent)</link:label>
    <link:label id="lab_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B_label_en-US" xlink:label="lab_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Expected Quarterly Base Management Fee To Aggregate Stockholders Equity</link:label>
    <link:label id="lab_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B_documentation_en-US" xlink:label="lab_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage Of Expected Quarterly Base Management Fee To Aggregate Stockholders Equity</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity" xlink:label="loc_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B" xlink:to="lab_land_PercentageOfExpectedQuarterlyBaseManagementFeeToAggregateStockholdersEquity_0D83F2654EDC18D7868D2807911C361B" xlink:type="arc" />
    <link:label id="lab_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73_terseLabel_en-US" xlink:label="lab_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Base management fee, waiver credit granted by Adviser</link:label>
    <link:label id="lab_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73_label_en-US" xlink:label="lab_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Base Management Fee, Waiver Credit Granted by Related Party</link:label>
    <link:label id="lab_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73_documentation_en-US" xlink:label="lab_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Base Management Fee, Waiver Credit Granted by Related Party</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty" xlink:label="loc_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73" xlink:to="lab_land_BaseManagementFeeWaiverCreditGrantedbyRelatedParty_9E9E1BE02F6F66B91E2F2807911CDA73" xlink:type="arc" />
    <link:label id="lab_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C_terseLabel_en-US" xlink:label="lab_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cumulative realized capital gains (as percent)</link:label>
    <link:label id="lab_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C_label_en-US" xlink:label="lab_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage of Incentive Fees on Capital Gains</link:label>
    <link:label id="lab_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C_documentation_en-US" xlink:label="lab_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of Incentive Fees on Capital Gains</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageofIncentiveFeesonCapitalGains" xlink:label="loc_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C" xlink:to="lab_land_PercentageofIncentiveFeesonCapitalGains_1C535135F553F2C68DA12807911C1A7C" xlink:type="arc" />
    <link:label id="lab_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864_terseLabel_en-US" xlink:label="lab_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital gains fee, waiver credit granted by Adviser</link:label>
    <link:label id="lab_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864_label_en-US" xlink:label="lab_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Gains Fee, Waiver Credit Granted by Related Party</link:label>
    <link:label id="lab_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864_documentation_en-US" xlink:label="lab_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capital Gains Fee, Waiver Credit Granted by Related Party</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty" xlink:label="loc_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864" xlink:to="lab_land_CapitalGainsFeeWaiverCreditGrantedbyRelatedParty_37F1C9C03087788427F82807911C5864" xlink:type="arc" />
    <link:label id="lab_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E_terseLabel_en-US" xlink:label="lab_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital gains fee, reduction of fee due to capital losses</link:label>
    <link:label id="lab_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E_label_en-US" xlink:label="lab_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Gains Fee, Reduction Of Fee Due To Capital Losses</link:label>
    <link:label id="lab_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E_documentation_en-US" xlink:label="lab_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capital Gains Fee, Reduction Of Fee Due To Capital Losses</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses" xlink:label="loc_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E" xlink:to="lab_land_CapitalGainsFeeReductionOfFeeDueToCapitalLosses_B8E691B917EE642295492807911C8E0E" xlink:type="arc" />
    <link:label id="lab_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2_terseLabel_en-US" xlink:label="lab_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Written notice (in days)</link:label>
    <link:label id="lab_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2_label_en-US" xlink:label="lab_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Notice Period For Termination Of Agreement Without Cause</link:label>
    <link:label id="lab_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2_documentation_en-US" xlink:label="lab_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Notice Period For Termination Of Agreement Without Cause</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NoticePeriodForTerminationOfAgreementWithoutCause" xlink:label="loc_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2" xlink:to="lab_land_NoticePeriodForTerminationOfAgreementWithoutCause_290167B5F8C54057D2322807911C85B2" xlink:type="arc" />
    <link:label id="lab_us-gaap_LessorOperatingLeaseTermOfContract_588D5B07E873C0F5D2542807911C7454_terseLabel_en-US" xlink:label="lab_us-gaap_LessorOperatingLeaseTermOfContract_588D5B07E873C0F5D2542807911C7454" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating lease, term (in years)</link:label>
    <link:label id="lab_us-gaap_LessorOperatingLeaseTermOfContract_588D5B07E873C0F5D2542807911C7454_label_en-US" xlink:label="lab_us-gaap_LessorOperatingLeaseTermOfContract_588D5B07E873C0F5D2542807911C7454" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Operating Lease, Term of Contract</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LessorOperatingLeaseTermOfContract" xlink:label="loc_us-gaap_LessorOperatingLeaseTermOfContract_588D5B07E873C0F5D2542807911C7454" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LessorOperatingLeaseTermOfContract_588D5B07E873C0F5D2542807911C7454" xlink:to="lab_us-gaap_LessorOperatingLeaseTermOfContract_588D5B07E873C0F5D2542807911C7454" xlink:type="arc" />
    <link:label id="lab_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1_terseLabel_en-US" xlink:label="lab_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fee waiver granted</link:label>
    <link:label id="lab_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1_label_en-US" xlink:label="lab_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fee Waiver Granted to Related Party</link:label>
    <link:label id="lab_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1_documentation_en-US" xlink:label="lab_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fee Waiver Granted to Related Party</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FeeWaiverGrantedtoRelatedParty" xlink:label="loc_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1" xlink:to="lab_land_FeeWaiverGrantedtoRelatedParty_7E9A5D8947C36735ECFF2807911C3FE1" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC_terseLabel_en-US" xlink:label="lab_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Financing fee (as percent)</link:label>
    <link:label id="lab_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC_label_en-US" xlink:label="lab_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Financing Fee To Amount Of Mortgage</link:label>
    <link:label id="lab_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC_documentation_en-US" xlink:label="lab_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage Of Financing Fee To Amount Of Mortgage</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfFinancingFeeToAmountOfMortgage" xlink:label="loc_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC" xlink:to="lab_land_PercentageOfFinancingFeeToAmountOfMortgage_F918241B88518B8BE28B2807911C8CCC" xlink:type="arc" />
    <link:label id="lab_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C_terseLabel_en-US" xlink:label="lab_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Selling commission fee (as percent)</link:label>
    <link:label id="lab_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C_label_en-US" xlink:label="lab_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Selling Commission Percent Of Gross Proceeds Limit</link:label>
    <link:label id="lab_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C_documentation_en-US" xlink:label="lab_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Selling Commission Percent Of Gross Proceeds Limit</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SellingCommissionPercentOfGrossProceedsLimit" xlink:label="loc_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C" xlink:to="lab_land_SellingCommissionPercentOfGrossProceedsLimit_486C685E6DD9D86DB6CF2807911C3C0C" xlink:type="arc" />
    <link:label id="lab_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF_terseLabel_en-US" xlink:label="lab_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dealer-manager fee (as percent)</link:label>
    <link:label id="lab_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF_label_en-US" xlink:label="lab_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dealer-Manager Fee Percent Of Gross Proceeds Limit</link:label>
    <link:label id="lab_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF_documentation_en-US" xlink:label="lab_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dealer-Manager Fee Percent Of Gross Proceeds Limit</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DealerManagerFeePercentOfGrossProceedsLimit" xlink:label="loc_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF" xlink:to="lab_land_DealerManagerFeePercentOfGrossProceedsLimit_9EBD03D84BDD12E014BD2807911C1BBF" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationByPropertyTable_FD233DB7CE7408FB112D22B04F90577B_terseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationByPropertyTable_FD233DB7CE7408FB112D22B04F90577B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table]</link:label>
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationByPropertyTable_FD233DB7CE7408FB112D22B04F90577B_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationByPropertyTable_FD233DB7CE7408FB112D22B04F90577B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationByPropertyTable" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationByPropertyTable_FD233DB7CE7408FB112D22B04F90577B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationByPropertyTable_FD233DB7CE7408FB112D22B04F90577B" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationByPropertyTable_FD233DB7CE7408FB112D22B04F90577B" xlink:type="arc" />
    <link:label id="lab_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D_terseLabel_en-US" xlink:label="lab_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Santa Cruz County, California</link:label>
    <link:label id="lab_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D_label_en-US" xlink:label="lab_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Santa Cruz County California [Member]</link:label>
    <link:label id="lab_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D_documentation_en-US" xlink:label="lab_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Santa Cruz county California.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SantaCruzCountyCaliforniaMember" xlink:label="loc_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D" xlink:to="lab_land_SantaCruzCountyCaliforniaMember_3C7EA0DD0F7BC36317EE22B04F90AF4D" xlink:type="arc" />
    <link:label id="lab_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D_terseLabel_en-US" xlink:label="lab_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hillsborough County, Florida</link:label>
    <link:label id="lab_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D_label_en-US" xlink:label="lab_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hillsborough County Florida [Member]</link:label>
    <link:label id="lab_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D_documentation_en-US" xlink:label="lab_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Hillsborough county Florida.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HillsboroughCountyFloridaMember" xlink:label="loc_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D" xlink:to="lab_land_HillsboroughCountyFloridaMember_C690215403E85EF30A5822B04FA0537D" xlink:type="arc" />
    <link:label id="lab_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F_terseLabel_en-US" xlink:label="lab_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Marion County, Oregon</link:label>
    <link:label id="lab_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F_label_en-US" xlink:label="lab_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Marion County Oregon [Member]</link:label>
    <link:label id="lab_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F_documentation_en-US" xlink:label="lab_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Marion county Oregon.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MarionCountyOregonMember" xlink:label="loc_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F" xlink:to="lab_land_MarionCountyOregonMember_79EBA645ED8957ABD00B22B04FA0481F" xlink:type="arc" />
    <link:label id="lab_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3_terseLabel_en-US" xlink:label="lab_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Monterey County, California</link:label>
    <link:label id="lab_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3_label_en-US" xlink:label="lab_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Monterey County California [Member]</link:label>
    <link:label id="lab_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3_documentation_en-US" xlink:label="lab_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Monterey county California.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MontereyCountyCaliforniaMember" xlink:label="loc_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3" xlink:to="lab_land_MontereyCountyCaliforniaMember_C0DA886EDE4F37992A6122B04FA0F8F3" xlink:type="arc" />
    <link:label id="lab_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04_terseLabel_en-US" xlink:label="lab_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cochise County, Arizona</link:label>
    <link:label id="lab_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04_label_en-US" xlink:label="lab_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cochise County, Arizona [Member]</link:label>
    <link:label id="lab_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04_documentation_en-US" xlink:label="lab_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Cochise County, Arizona</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CochiseCountyArizonaMember" xlink:label="loc_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04" xlink:to="lab_land_CochiseCountyArizonaMember_D5BA78650494F9F4ED9A22B04FA02D04" xlink:type="arc" />
    <link:label id="lab_land_KernCountyCaliforniaMember_1197F5D1177510C2B0D222B04FA0C983_verboseLabel_en-US" xlink:label="lab_land_KernCountyCaliforniaMember_1197F5D1177510C2B0D222B04FA0C983" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Kern County, California</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_KernCountyCaliforniaMember" xlink:label="loc_land_KernCountyCaliforniaMember_1197F5D1177510C2B0D222B04FA0C983" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_KernCountyCaliforniaMember_1197F5D1177510C2B0D222B04FA0C983" xlink:to="lab_land_KernCountyCaliforniaMember_1197F5D1177510C2B0D222B04FA0C983" xlink:type="arc" />
    <link:label id="lab_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C_terseLabel_en-US" xlink:label="lab_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Manatee County, Florida</link:label>
    <link:label id="lab_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C_label_en-US" xlink:label="lab_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Manatee County Florida [Member]</link:label>
    <link:label id="lab_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C_documentation_en-US" xlink:label="lab_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Manatee County Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ManateeCountyFloridaMember" xlink:label="loc_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C" xlink:to="lab_land_ManateeCountyFloridaMember_434117FC5AEE8E0FA01822B04FA0976C" xlink:type="arc" />
    <link:label id="lab_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400_terseLabel_en-US" xlink:label="lab_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hendry County, Florida</link:label>
    <link:label id="lab_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400_label_en-US" xlink:label="lab_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Hendry County Florida [Member]</link:label>
    <link:label id="lab_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400_documentation_en-US" xlink:label="lab_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Hendry County Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HendryCountyFloridaMember" xlink:label="loc_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400" xlink:to="lab_land_HendryCountyFloridaMember_3776225147C4DDBC3D1222B04FA04400" xlink:type="arc" />
    <link:label id="lab_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC_terseLabel_en-US" xlink:label="lab_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Holt County, Nebraska</link:label>
    <link:label id="lab_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC_label_en-US" xlink:label="lab_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Holt County Nebraska [Member]</link:label>
    <link:label id="lab_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC_documentation_en-US" xlink:label="lab_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Holt County Nebraska [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HoltCountyNebraskaMember" xlink:label="loc_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC" xlink:to="lab_land_HoltCountyNebraskaMember_3478872BA6AF933542B122B04FA0A7AC" xlink:type="arc" />
    <link:label id="lab_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A_terseLabel_en-US" xlink:label="lab_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Rock County, Nebraska</link:label>
    <link:label id="lab_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A_label_en-US" xlink:label="lab_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Rock County Nebraska [Member]</link:label>
    <link:label id="lab_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A_documentation_en-US" xlink:label="lab_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Rock County Nebraska [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RockCountyNebraskaMember" xlink:label="loc_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A" xlink:to="lab_land_RockCountyNebraskaMember_796740BFB40E4397B5BD22B04FA09F5A" xlink:type="arc" />
    <link:label id="lab_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416_terseLabel_en-US" xlink:label="lab_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Saguache County, Colorado</link:label>
    <link:label id="lab_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416_label_en-US" xlink:label="lab_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Saguache County, California [Member]</link:label>
    <link:label id="lab_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416_documentation_en-US" xlink:label="lab_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Saguache County, California [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SaguacheCountyCaliforniaMember" xlink:label="loc_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416" xlink:to="lab_land_SaguacheCountyCaliforniaMember_C89048C37024F2CBD79222B04FA01416" xlink:type="arc" />
    <link:label id="lab_land_FresnoCountyCaliforniaMember_7B0494143D7E343F0A0322B04FA04DDA_verboseLabel_en-US" xlink:label="lab_land_FresnoCountyCaliforniaMember_7B0494143D7E343F0A0322B04FA04DDA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Fresno County, California</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FresnoCountyCaliforniaMember" xlink:label="loc_land_FresnoCountyCaliforniaMember_7B0494143D7E343F0A0322B04FA04DDA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FresnoCountyCaliforniaMember_7B0494143D7E343F0A0322B04FA04DDA" xlink:to="lab_land_FresnoCountyCaliforniaMember_7B0494143D7E343F0A0322B04FA04DDA" xlink:type="arc" />
    <link:label id="lab_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F_terseLabel_en-US" xlink:label="lab_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Saint Lucie County, Florida</link:label>
    <link:label id="lab_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F_label_en-US" xlink:label="lab_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">St. Lucie County, Florida [Member]</link:label>
    <link:label id="lab_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F_documentation_en-US" xlink:label="lab_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">St. Lucie County, Florida [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_St.LucieCountyFloridaMember" xlink:label="loc_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F" xlink:to="lab_land_St.LucieCountyFloridaMember_1AC0FDD1A98E562F1C2622B04FA09E8F" xlink:type="arc" />
    <link:label id="lab_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753_verboseLabel_en-US" xlink:label="lab_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Baca County, Colorado</link:label>
    <link:label id="lab_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753_label_en-US" xlink:label="lab_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Baca County [Member]</link:label>
    <link:label id="lab_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753_documentation_en-US" xlink:label="lab_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Baca County</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BacaCountyMember" xlink:label="loc_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753" xlink:to="lab_land_BacaCountyMember_40819C71EE2F915A4B1322B04FA09753" xlink:type="arc" />
    <link:label id="lab_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4_verboseLabel_en-US" xlink:label="lab_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Stanislaus County, California</link:label>
    <link:label id="lab_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4_label_en-US" xlink:label="lab_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Stanislaus, CA [Member]</link:label>
    <link:label id="lab_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4_documentation_en-US" xlink:label="lab_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Stanislaus, CA</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_StanislausCAMember" xlink:label="loc_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4" xlink:to="lab_land_StanislausCAMember_D255AE586EF4199EEC7522B04FA093F4" xlink:type="arc" />
    <link:label id="lab_land_MercedCAMember_9DE28046E9C3F060A22222B04FA0C0CE_verboseLabel_en-US" xlink:label="lab_land_MercedCAMember_9DE28046E9C3F060A22222B04FA0C0CE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Merced County, California</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MercedCAMember" xlink:label="loc_land_MercedCAMember_9DE28046E9C3F060A22222B04FA0C0CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MercedCAMember_9DE28046E9C3F060A22222B04FA0C0CE" xlink:to="lab_land_MercedCAMember_9DE28046E9C3F060A22222B04FA0C0CE" xlink:type="arc" />
    <link:label id="lab_land_MartinCountyFloridaMember_FF75DEAB38E49F277F4422B04FA03437_verboseLabel_en-US" xlink:label="lab_land_MartinCountyFloridaMember_FF75DEAB38E49F277F4422B04FA03437" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Martin County, Florida</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MartinCountyFloridaMember" xlink:label="loc_land_MartinCountyFloridaMember_FF75DEAB38E49F277F4422B04FA03437" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MartinCountyFloridaMember_FF75DEAB38E49F277F4422B04FA03437" xlink:to="lab_land_MartinCountyFloridaMember_FF75DEAB38E49F277F4422B04FA03437" xlink:type="arc" />
    <link:label id="lab_land_YumaArizonaMember_3DAF4C049BF73DE6CC6722B04FA0F916_verboseLabel_en-US" xlink:label="lab_land_YumaArizonaMember_3DAF4C049BF73DE6CC6722B04FA0F916" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Yuma County, Arizona</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_YumaArizonaMember" xlink:label="loc_land_YumaArizonaMember_3DAF4C049BF73DE6CC6722B04FA0F916" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_YumaArizonaMember_3DAF4C049BF73DE6CC6722B04FA0F916" xlink:to="lab_land_YumaArizonaMember_3DAF4C049BF73DE6CC6722B04FA0F916" xlink:type="arc" />
    <link:label id="lab_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051_terseLabel_en-US" xlink:label="lab_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Bladen County, North Carolina</link:label>
    <link:label id="lab_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051_label_en-US" xlink:label="lab_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Bladen, North Carolina [Member]</link:label>
    <link:label id="lab_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051_documentation_en-US" xlink:label="lab_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Bladen, North Carolina [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_BladenNorthCarolinaMember" xlink:label="loc_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051" xlink:to="lab_land_BladenNorthCarolinaMember_25EBD2EBEEF1CCC2C5DA22B04FA03051" xlink:type="arc" />
    <link:label id="lab_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2_terseLabel_en-US" xlink:label="lab_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Okeechobee County, Florida</link:label>
    <link:label id="lab_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2_label_en-US" xlink:label="lab_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Okeechobee, FL [Member]</link:label>
    <link:label id="lab_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2_documentation_en-US" xlink:label="lab_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Okeechobee, FL [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OkeechobeeFLMember" xlink:label="loc_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2" xlink:to="lab_land_OkeechobeeFLMember_B2F9160D84F0CC9275A322B04FA020A2" xlink:type="arc" />
    <link:label id="lab_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3_terseLabel_en-US" xlink:label="lab_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Santa Barbara County, California</link:label>
    <link:label id="lab_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3_label_en-US" xlink:label="lab_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Santa Barbara, CA [Member]</link:label>
    <link:label id="lab_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3_documentation_en-US" xlink:label="lab_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Santa Barbara, CA [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SantaBarbaraCAMember" xlink:label="loc_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3" xlink:to="lab_land_SantaBarbaraCAMember_FCB83A27B3FF02E179C022B04FA0DAA3" xlink:type="arc" />
    <link:label id="lab_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE_terseLabel_en-US" xlink:label="lab_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Walla Walla County, WA</link:label>
    <link:label id="lab_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE_label_en-US" xlink:label="lab_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Walla Walla County, WA [Member]</link:label>
    <link:label id="lab_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE_documentation_en-US" xlink:label="lab_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Walla Walla County, WA [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_WallaWallaCountyWAMember" xlink:label="loc_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE" xlink:to="lab_land_WallaWallaCountyWAMember_3D785654AB3BB73CBD2522B04FA0F1AE" xlink:type="arc" />
    <link:label id="lab_land_CollierAndHendryCountyFloridaMember_37206C0A91EADDD7ADBD22B04FA0C2E5_verboseLabel_en-US" xlink:label="lab_land_CollierAndHendryCountyFloridaMember_37206C0A91EADDD7ADBD22B04FA0C2E5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Collier &amp; Hendry, Florida</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CollierAndHendryCountyFloridaMember" xlink:label="loc_land_CollierAndHendryCountyFloridaMember_37206C0A91EADDD7ADBD22B04FA0C2E5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CollierAndHendryCountyFloridaMember_37206C0A91EADDD7ADBD22B04FA0C2E5" xlink:to="lab_land_CollierAndHendryCountyFloridaMember_37206C0A91EADDD7ADBD22B04FA0C2E5" xlink:type="arc" />
    <link:label id="lab_land_KingsCountyCaliforniaMember_63367C9378CB98B3631C22B04FA0A574_verboseLabel_en-US" xlink:label="lab_land_KingsCountyCaliforniaMember_63367C9378CB98B3631C22B04FA0A574" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Kings County, California</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_KingsCountyCaliforniaMember" xlink:label="loc_land_KingsCountyCaliforniaMember_63367C9378CB98B3631C22B04FA0A574" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_KingsCountyCaliforniaMember_63367C9378CB98B3631C22B04FA0A574" xlink:to="lab_land_KingsCountyCaliforniaMember_63367C9378CB98B3631C22B04FA0A574" xlink:type="arc" />
    <link:label id="lab_land_MaderaCaliforniaMember_0272CED254E34A824FED22B04FA0DF4B_verboseLabel_en-US" xlink:label="lab_land_MaderaCaliforniaMember_0272CED254E34A824FED22B04FA0DF4B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Madera, California</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_MaderaCaliforniaMember" xlink:label="loc_land_MaderaCaliforniaMember_0272CED254E34A824FED22B04FA0DF4B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_MaderaCaliforniaMember_0272CED254E34A824FED22B04FA0DF4B" xlink:to="lab_land_MaderaCaliforniaMember_0272CED254E34A824FED22B04FA0DF4B" xlink:type="arc" />
    <link:label id="lab_land_HartleyTexasMember_3D21BF28903C95255FB022B04FA0F4E9_verboseLabel_en-US" xlink:label="lab_land_HartleyTexasMember_3D21BF28903C95255FB022B04FA0F4E9" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Hartley County, Texas</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HartleyTexasMember" xlink:label="loc_land_HartleyTexasMember_3D21BF28903C95255FB022B04FA0F4E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HartleyTexasMember_3D21BF28903C95255FB022B04FA0F4E9" xlink:to="lab_land_HartleyTexasMember_3D21BF28903C95255FB022B04FA0F4E9" xlink:type="arc" />
    <link:label id="lab_invest_InvestmentAxis_6A42FF034622E5A3F24F22B04FA04193_terseLabel_en-US" xlink:label="lab_invest_InvestmentAxis_6A42FF034622E5A3F24F22B04FA04193" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment [Axis]</link:label>
    <link:label id="lab_invest_InvestmentAxis_6A42FF034622E5A3F24F22B04FA04193_label_en-US" xlink:label="lab_invest_InvestmentAxis_6A42FF034622E5A3F24F22B04FA04193" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentAxis" xlink:label="loc_invest_InvestmentAxis_6A42FF034622E5A3F24F22B04FA04193" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_invest_InvestmentAxis_6A42FF034622E5A3F24F22B04FA04193" xlink:to="lab_invest_InvestmentAxis_6A42FF034622E5A3F24F22B04FA04193" xlink:type="arc" />
    <link:label id="lab_invest_InvestmentDomain_E5858CB2E22B589D309A22B04FA004BC_terseLabel_en-US" xlink:label="lab_invest_InvestmentDomain_E5858CB2E22B589D309A22B04FA004BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Investment [Domain]</link:label>
    <link:label id="lab_invest_InvestmentDomain_E5858CB2E22B589D309A22B04FA004BC_label_en-US" xlink:label="lab_invest_InvestmentDomain_E5858CB2E22B589D309A22B04FA004BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investment [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.sec.gov/invest/2013/invest-2013-01-31.xsd#invest_InvestmentDomain" xlink:label="loc_invest_InvestmentDomain_E5858CB2E22B589D309A22B04FA004BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_invest_InvestmentDomain_E5858CB2E22B589D309A22B04FA004BC" xlink:to="lab_invest_InvestmentDomain_E5858CB2E22B589D309A22B04FA004BC" xlink:type="arc" />
    <link:label id="lab_us-gaap_MiscellaneousInvestmentsMember_7FBC52FA5F99F69BA93422B04FA07F28_terseLabel_en-US" xlink:label="lab_us-gaap_MiscellaneousInvestmentsMember_7FBC52FA5F99F69BA93422B04FA07F28" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Miscellaneous Investments</link:label>
    <link:label id="lab_us-gaap_MiscellaneousInvestmentsMember_7FBC52FA5F99F69BA93422B04FA07F28_label_en-US" xlink:label="lab_us-gaap_MiscellaneousInvestmentsMember_7FBC52FA5F99F69BA93422B04FA07F28" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Miscellaneous Investments [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_MiscellaneousInvestmentsMember" xlink:label="loc_us-gaap_MiscellaneousInvestmentsMember_7FBC52FA5F99F69BA93422B04FA07F28" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_MiscellaneousInvestmentsMember_7FBC52FA5F99F69BA93422B04FA07F28" xlink:to="lab_us-gaap_MiscellaneousInvestmentsMember_7FBC52FA5F99F69BA93422B04FA07F28" xlink:type="arc" />
    <link:label id="lab_us-gaap_LandAndLandImprovementsMember_28BC5D914F3C5F44C9C122B04FA086D5_terseLabel_en-US" xlink:label="lab_us-gaap_LandAndLandImprovementsMember_28BC5D914F3C5F44C9C122B04FA086D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land, Buildings &amp; Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandAndLandImprovementsMember" xlink:label="loc_us-gaap_LandAndLandImprovementsMember_28BC5D914F3C5F44C9C122B04FA086D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandAndLandImprovementsMember_28BC5D914F3C5F44C9C122B04FA086D5" xlink:to="lab_us-gaap_LandAndLandImprovementsMember_28BC5D914F3C5F44C9C122B04FA086D5" xlink:type="arc" />
    <link:label id="lab_us-gaap_LandBuildingsAndImprovementsMember_A65FE1ED8774B137D5B022B04FAF574B_terseLabel_en-US" xlink:label="lab_us-gaap_LandBuildingsAndImprovementsMember_A65FE1ED8774B137D5B022B04FAF574B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land, Buildings &amp; Improvements</link:label>
    <link:label id="lab_us-gaap_LandBuildingsAndImprovementsMember_A65FE1ED8774B137D5B022B04FAF574B_label_en-US" xlink:label="lab_us-gaap_LandBuildingsAndImprovementsMember_A65FE1ED8774B137D5B022B04FAF574B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land, Buildings and Improvements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandBuildingsAndImprovementsMember" xlink:label="loc_us-gaap_LandBuildingsAndImprovementsMember_A65FE1ED8774B137D5B022B04FAF574B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandBuildingsAndImprovementsMember_A65FE1ED8774B137D5B022B04FAF574B" xlink:to="lab_us-gaap_LandBuildingsAndImprovementsMember_A65FE1ED8774B137D5B022B04FAF574B" xlink:type="arc" />
    <link:label id="lab_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F_terseLabel_en-US" xlink:label="lab_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land &amp; Buildings</link:label>
    <link:label id="lab_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F_label_en-US" xlink:label="lab_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land, Improvements and Horticulture [Member]</link:label>
    <link:label id="lab_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F_documentation_en-US" xlink:label="lab_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Land, Improvements and Horticulture [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LandImprovementsandHorticultureMember" xlink:label="loc_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F" xlink:to="lab_land_LandImprovementsandHorticultureMember_8992CFEED2FCBCFCD69D22B04FAF888F" xlink:type="arc" />
    <link:label id="lab_us-gaap_LandAndBuildingMember_2DFBC4C8176951019F8222B04FAF0B93_terseLabel_en-US" xlink:label="lab_us-gaap_LandAndBuildingMember_2DFBC4C8176951019F8222B04FAF0B93" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land &amp; Improvements</link:label>
    <link:label id="lab_us-gaap_LandAndBuildingMember_2DFBC4C8176951019F8222B04FAF0B93_label_en-US" xlink:label="lab_us-gaap_LandAndBuildingMember_2DFBC4C8176951019F8222B04FAF0B93" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land and Building [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandAndBuildingMember" xlink:label="loc_us-gaap_LandAndBuildingMember_2DFBC4C8176951019F8222B04FAF0B93" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandAndBuildingMember_2DFBC4C8176951019F8222B04FAF0B93" xlink:to="lab_us-gaap_LandAndBuildingMember_2DFBC4C8176951019F8222B04FAF0B93" xlink:type="arc" />
    <link:label id="lab_us-gaap_LandMember_2608EDB70881750715BC22B04FAF5C35_terseLabel_en-US" xlink:label="lab_us-gaap_LandMember_2608EDB70881750715BC22B04FAF5C35" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land</link:label>
    <link:label id="lab_us-gaap_LandMember_2608EDB70881750715BC22B04FAF5C35_label_en-US" xlink:label="lab_us-gaap_LandMember_2608EDB70881750715BC22B04FAF5C35" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LandMember" xlink:label="loc_us-gaap_LandMember_2608EDB70881750715BC22B04FAF5C35" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LandMember_2608EDB70881750715BC22B04FAF5C35" xlink:to="lab_us-gaap_LandMember_2608EDB70881750715BC22B04FAF5C35" xlink:type="arc" />
    <link:label id="lab_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957_terseLabel_en-US" xlink:label="lab_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land, Buildings, Improvements &amp; Horticulture</link:label>
    <link:label id="lab_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957_label_en-US" xlink:label="lab_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land, Buildings, Improvements and Horticulture [Member]</link:label>
    <link:label id="lab_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957_documentation_en-US" xlink:label="lab_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Land, Buildings, Improvements and Horticulture [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LandBuildingsImprovementsAndHorticultureMember" xlink:label="loc_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957" xlink:to="lab_land_LandBuildingsImprovementsAndHorticultureMember_2AF9E952F6B5ECE3D3D822B04FAF0957" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_90947B793B368DAC2C9122B04FAF1B3E_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_90947B793B368DAC2C9122B04FAF1B3E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAxis_90947B793B368DAC2C9122B04FAF1B3E_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAxis_90947B793B368DAC2C9122B04FAF1B3E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAxis" xlink:label="loc_us-gaap_BusinessAcquisitionAxis_90947B793B368DAC2C9122B04FAF1B3E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAxis_90947B793B368DAC2C9122B04FAF1B3E" xlink:to="lab_us-gaap_BusinessAcquisitionAxis_90947B793B368DAC2C9122B04FAF1B3E" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_8A8BE363EA0A78F0204622B04FAF2493_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_8A8BE363EA0A78F0204622B04FAF2493" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
    <link:label id="lab_us-gaap_BusinessAcquisitionAcquireeDomain_8A8BE363EA0A78F0204622B04FAF2493_label_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionAcquireeDomain_8A8BE363EA0A78F0204622B04FAF2493" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Acquisition, Acquiree [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BusinessAcquisitionAcquireeDomain" xlink:label="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8A8BE363EA0A78F0204622B04FAF2493" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessAcquisitionAcquireeDomain_8A8BE363EA0A78F0204622B04FAF2493" xlink:to="lab_us-gaap_BusinessAcquisitionAcquireeDomain_8A8BE363EA0A78F0204622B04FAF2493" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 6/16/1997</link:label>
    <link:label id="lab_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E_label_en-US" xlink:label="lab_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date One Member</link:label>
    <link:label id="lab_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E_documentation_en-US" xlink:label="lab_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date one.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateOneMember" xlink:label="loc_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E" xlink:to="lab_land_AcquisitionDateOneMember_A7DAB23BD280BE832E9D22B04FAF513E" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/15/1998</link:label>
    <link:label id="lab_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42_label_en-US" xlink:label="lab_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Two [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date two.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwoMember" xlink:label="loc_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42" xlink:to="lab_land_AcquisitionDateTwoMember_029B83F750FCD8A321B822B04FAF7E42" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 1/3/2011</link:label>
    <link:label id="lab_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B_label_en-US" xlink:label="lab_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Three [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B_documentation_en-US" xlink:label="lab_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date three.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThreeMember" xlink:label="loc_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B" xlink:to="lab_land_AcquisitionDateThreeMember_B29140CC23779DB2D9AE22B04FAF3C6B" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 8/9/2012</link:label>
    <link:label id="lab_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC_label_en-US" xlink:label="lab_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Five [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC_documentation_en-US" xlink:label="lab_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date five.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFiveMember" xlink:label="loc_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC" xlink:to="lab_land_AcquisitionDateFiveMember_355F02CD4B6096C9204022B04FAFAECC" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/12/2012</link:label>
    <link:label id="lab_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36_label_en-US" xlink:label="lab_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Six [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36_documentation_en-US" xlink:label="lab_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date six.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateSixMember" xlink:label="loc_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36" xlink:to="lab_land_AcquisitionDateSixMember_E3A9D47BC6079C5AD96722B04FAFBA36" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 5/31/2013</link:label>
    <link:label id="lab_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5_label_en-US" xlink:label="lab_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Seven [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5_documentation_en-US" xlink:label="lab_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date seven.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateSevenMember" xlink:label="loc_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5" xlink:to="lab_land_AcquisitionDateSevenMember_2D6852B28C35E335720C22B04FAF38D5" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 10/21/2013</link:label>
    <link:label id="lab_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691_label_en-US" xlink:label="lab_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Eight [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691_documentation_en-US" xlink:label="lab_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date eight.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateEightMember" xlink:label="loc_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691" xlink:to="lab_land_AcquisitionDateEightMember_486447034A403437094822B04FAF4691" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acquired Date 12/16/2013</link:label>
    <link:label id="lab_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07_label_en-US" xlink:label="lab_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Nine [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07_documentation_en-US" xlink:label="lab_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date nine.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateNineMember" xlink:label="loc_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07" xlink:to="lab_land_AcquisitionDateNineMember_6512C607636E809DF2B122B04FAF2F07" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 12/27/2013</link:label>
    <link:label id="lab_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E_label_en-US" xlink:label="lab_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Ten [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E_documentation_en-US" xlink:label="lab_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Ten [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTenMember" xlink:label="loc_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E" xlink:to="lab_land_AcquisitionDateTenMember_40AEF9F37714B8C0FFFF22B04FAFA01E" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 12/27/2013</link:label>
    <link:label id="lab_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD_label_en-US" xlink:label="lab_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Eleven [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD_documentation_en-US" xlink:label="lab_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date eleven.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateElevenMember" xlink:label="loc_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD" xlink:to="lab_land_AcquisitionDateElevenMember_B22D8220EA528A1818E822B04FAF9FCD" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 6/13/2014</link:label>
    <link:label id="lab_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26_label_en-US" xlink:label="lab_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twelve [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date twelve.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwelveMember" xlink:label="loc_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26" xlink:to="lab_land_AcquisitionDateTwelveMember_1078777AB17DA4824A6622B04FAFEB26" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 7/23/2014</link:label>
    <link:label id="lab_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7_label_en-US" xlink:label="lab_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirteen [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date thirteen.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirteenMember" xlink:label="loc_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7" xlink:to="lab_land_AcquisitionDateThirteenMember_0147A5017B807DBF5DF622B04FAFBCD7" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 7/25/2014</link:label>
    <link:label id="lab_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63_label_en-US" xlink:label="lab_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Fourteen [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63_documentation_en-US" xlink:label="lab_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date fourteen.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFourteenMember" xlink:label="loc_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63" xlink:to="lab_land_AcquisitionDateFourteenMember_D18C023BDE7B1E4E2F7822B04FAFAA63" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/29/2014</link:label>
    <link:label id="lab_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D_label_en-US" xlink:label="lab_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Fifteen [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D_documentation_en-US" xlink:label="lab_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date fifteen.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFifteenMember" xlink:label="loc_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D" xlink:to="lab_land_AcquisitionDateFifteenMember_53850B5C250B499A081422B04FAFBD4D" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 10/29/2014</link:label>
    <link:label id="lab_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820_label_en-US" xlink:label="lab_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Sixteen [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820_documentation_en-US" xlink:label="lab_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date sixteen.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateSixteenMember" xlink:label="loc_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820" xlink:to="lab_land_AcquisitionDateSixteenMember_C580AC0708C5A7622FCB22B04FAF1820" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 11/4/2014</link:label>
    <link:label id="lab_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54_label_en-US" xlink:label="lab_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Seventeen [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54_documentation_en-US" xlink:label="lab_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date seventeen.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateSeventeenMember" xlink:label="loc_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54" xlink:to="lab_land_AcquisitionDateSeventeenMember_D691FAC48D0E04853D2C22B04FAF9F54" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 1/5/2015</link:label>
    <link:label id="lab_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700_label_en-US" xlink:label="lab_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Eighteen [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700_documentation_en-US" xlink:label="lab_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date eighteen.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateEighteenMember" xlink:label="loc_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700" xlink:to="lab_land_AcquisitionDateEighteenMember_D67BA4D5C2A5047A4E5E22B04FAF1700" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 3/10/2015</link:label>
    <link:label id="lab_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE_label_en-US" xlink:label="lab_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Nineteen [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE_documentation_en-US" xlink:label="lab_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date nineteen.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateNineteenMember" xlink:label="loc_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE" xlink:to="lab_land_AcquisitionDateNineteenMember_5D1E88D958684CC0CEE822B04FAF58EE" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 6/25/2015</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date twenty.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyMember" xlink:label="loc_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF" xlink:to="lab_land_AcquisitionDateTwentyMember_3312B94770AAEBCFB4C122B04FAF02CF" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 8/20/2015</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty One [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date twenty one.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyOneMember" xlink:label="loc_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615" xlink:to="lab_land_AcquisitionDateTwentyOneMember_D65E84A94E689B4AA6FC22B04FAF2615" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 8/20/2015</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Two [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition date twenty two.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyTwoMember" xlink:label="loc_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0" xlink:to="lab_land_AcquisitionDateTwentyTwoMember_621F5B859A52C660C71D22B04FAFCEB0" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/3/2015</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Three [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Three [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyThreeMember" xlink:label="loc_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B" xlink:to="lab_land_AcquisitionDateTwentyThreeMember_BBBF9BA966CC6A81F6D822B04FAF6F9B" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 11/2/2015</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Four [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Four [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyFourMember" xlink:label="loc_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A" xlink:to="lab_land_AcquisitionDateTwentyFourMember_89BEB835CF7E06EE466622B04FAFE31A" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 12/23/2015</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Five [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Five [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyFiveMember" xlink:label="loc_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862" xlink:to="lab_land_AcquisitionDateTwentyFiveMember_EA3B39475E376950D00422B04FAF9862" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 3/3/2016</link:label>
    <link:label id="lab_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE_label_en-US" xlink:label="lab_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Six [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Six [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentySixMember" xlink:label="loc_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE" xlink:to="lab_land_AcquisitionDateTwentySixMember_638163EFBAF0AB6C0EBE22B04FAF0BDE" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 4/5/2016</link:label>
    <link:label id="lab_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271_label_en-US" xlink:label="lab_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Seven [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Seven [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentySevenMember" xlink:label="loc_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271" xlink:to="lab_land_AcquisitionDateTwentySevenMember_97484057F2B8EFB87FEE22B04FAF0271" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 7/1/2016</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Eight [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Eight [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyEightMember" xlink:label="loc_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB" xlink:to="lab_land_AcquisitionDateTwentyEightMember_AECC365A67EF6990155722B04FAF1FDB" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/1/2016</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B_label_en-US" xlink:label="lab_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Nine [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B_documentation_en-US" xlink:label="lab_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Twenty Nine [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateTwentyNineMember" xlink:label="loc_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B" xlink:to="lab_land_AcquisitionDateTwentyNineMember_6DF444FEACFE96DAD46A22B04FAFD25B" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/14/2016</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyMember" xlink:label="loc_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB" xlink:to="lab_land_AcquisitionDateThirtyMember_D50309BCE8F963A4A28622B04FAF2FAB" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/14/2016</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty One [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty One [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyOneMember" xlink:label="loc_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113" xlink:to="lab_land_AcquisitionDateThirtyOneMember_C2008E7CF90736FA8AF722B04FAF0113" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 10/13/2016</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Two [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Two [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyTwoMember" xlink:label="loc_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600" xlink:to="lab_land_AcquisitionDateThirtyTwoMember_40805746CCCE4D06BAA122B04FAF8600" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 12/28/2016</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Three [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Three [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyThreeMember" xlink:label="loc_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2" xlink:to="lab_land_AcquisitionDateThirtyThreeMember_7970046CD78756B1A90D22B04FAFCDA2" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 7/17/2017</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Four [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Four [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyFourMember" xlink:label="loc_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9" xlink:to="lab_land_AcquisitionDateThirtyFourMember_3C245E5F5CFC8918F53422B04FAF8CD9" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 8/9/2017</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Five [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Five [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyFiveMember" xlink:label="loc_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A" xlink:to="lab_land_AcquisitionDateThirtyFiveMember_4B574B22E27FE7B6A7C422B04FAF894A" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 8/9/2017</link:label>
    <link:label id="lab_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162_label_en-US" xlink:label="lab_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Six [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Six</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtySixMember" xlink:label="loc_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162" xlink:to="lab_land_AcquisitionDateThirtySixMember_7AB0B9E630386549224822B04FAF9162" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/8/2017</link:label>
    <link:label id="lab_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617_label_en-US" xlink:label="lab_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Seven [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Seven [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtySevenMember" xlink:label="loc_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617" xlink:to="lab_land_AcquisitionDateThirtySevenMember_21CC608851DB62D294F122B04FAF8617" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 12/15/2017</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Eight [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Eight [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyEightMember" xlink:label="loc_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B" xlink:to="lab_land_AcquisitionDateThirtyEightMember_52604F17D4834CF6EA4822B04FAF488B" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 1/31/2018</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767_label_en-US" xlink:label="lab_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Nine [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767_documentation_en-US" xlink:label="lab_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Thirty Nine [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateThirtyNineMember" xlink:label="loc_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767" xlink:to="lab_land_AcquisitionDateThirtyNineMember_E9A23C77C827488F3EB322B04FAFC767" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 7/12/2018</link:label>
    <link:label id="lab_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343_label_en-US" xlink:label="lab_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343_documentation_en-US" xlink:label="lab_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFortyMember" xlink:label="loc_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343" xlink:to="lab_land_AcquisitionDateFortyMember_6CC4AE9234A75A57308422B04FAF7343" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 9/13/2018</link:label>
    <link:label id="lab_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B_label_en-US" xlink:label="lab_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty One [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B_documentation_en-US" xlink:label="lab_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty One [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFortyOneMember" xlink:label="loc_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B" xlink:to="lab_land_AcquisitionDateFortyOneMember_12EAAA1AF5397432E31422B04FAF606B" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 11/1/2018</link:label>
    <link:label id="lab_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33_label_en-US" xlink:label="lab_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty Two [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33_documentation_en-US" xlink:label="lab_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty Two [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFortyTwoMember" xlink:label="loc_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33" xlink:to="lab_land_AcquisitionDateFortyTwoMember_8EB691D727E72E849F4922B04FAF5F33" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 11/20/2018</link:label>
    <link:label id="lab_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223_label_en-US" xlink:label="lab_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty Three [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223_documentation_en-US" xlink:label="lab_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty Three [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFortyThreeMember" xlink:label="loc_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223" xlink:to="lab_land_AcquisitionDateFortyThreeMember_436338C823BD3CDC675422B04FAFF223" xlink:type="arc" />
    <link:label id="lab_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5_terseLabel_en-US" xlink:label="lab_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired 12/6/2018</link:label>
    <link:label id="lab_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5_label_en-US" xlink:label="lab_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty Four [Member]</link:label>
    <link:label id="lab_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5_documentation_en-US" xlink:label="lab_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acquisition Date Forty Four [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AcquisitionDateFortyFourMember" xlink:label="loc_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5" xlink:to="lab_land_AcquisitionDateFortyFourMember_E98000DED9C9AC1359CE22B04FAFEAB5" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationLineItems_97E632839CA8F51C206122B04FAFB1F3_terseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationLineItems_97E632839CA8F51C206122B04FAFB1F3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]</link:label>
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationLineItems_97E632839CA8F51C206122B04FAFB1F3_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationLineItems_97E632839CA8F51C206122B04FAFB1F3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationLineItems" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationLineItems_97E632839CA8F51C206122B04FAFB1F3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationLineItems_97E632839CA8F51C206122B04FAFB1F3" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationLineItems_97E632839CA8F51C206122B04FAFB1F3" xlink:type="arc" />
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationDateAcquired1_A7B492A20DC9E7949C1122B04FAFF502_terseLabel_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationDateAcquired1_A7B492A20DC9E7949C1122B04FAFF502" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Date Acquired</link:label>
    <link:label id="lab_srt_RealEstateAndAccumulatedDepreciationDateAcquired1_A7B492A20DC9E7949C1122B04FAFF502_label_en-US" xlink:label="lab_srt_RealEstateAndAccumulatedDepreciationDateAcquired1_A7B492A20DC9E7949C1122B04FAFF502" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Date Acquired</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/srt/2018/elts/srt-2018-01-31.xsd#srt_RealEstateAndAccumulatedDepreciationDateAcquired1" xlink:label="loc_srt_RealEstateAndAccumulatedDepreciationDateAcquired1_A7B492A20DC9E7949C1122B04FAFF502" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_srt_RealEstateAndAccumulatedDepreciationDateAcquired1_A7B492A20DC9E7949C1122B04FAFF502" xlink:to="lab_srt_RealEstateAndAccumulatedDepreciationDateAcquired1_A7B492A20DC9E7949C1122B04FAFF502" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74_terseLabel_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Initial cost, land and land improvements</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74_label_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate And Accumulated Depreciation Initial Cost Of Land And Improvements</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74_documentation_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate and accumulated depreciation initial cost of land and improvements.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements" xlink:label="loc_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74" xlink:to="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfLandAndImprovements_7E513CC0DF69E689FE9A22B04FBF0C74" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_45498A3D63144F83744B22B04FBFA8E1_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_45498A3D63144F83744B22B04FBFA8E1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Initial cost, buildings &amp; improvements</link:label>
    <link:label id="lab_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_45498A3D63144F83744B22B04FBFA8E1_label_en-US" xlink:label="lab_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_45498A3D63144F83744B22B04FBFA8E1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_45498A3D63144F83744B22B04FBFA8E1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_45498A3D63144F83744B22B04FBFA8E1" xlink:to="lab_us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_45498A3D63144F83744B22B04FBFA8E1" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4_terseLabel_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Initial cost, horticulture</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4_label_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate And Accumulated Depreciation Initial Cost Of Horticulture</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4_documentation_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate and accumulated depreciation initial cost of horticulture.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture" xlink:label="loc_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4" xlink:to="lab_land_RealEstateAndAccumulatedDepreciationInitialCostOfHorticulture_E19740C4454754EE9FE422B04FBFFAD4" xlink:type="arc" />
    <link:label id="lab_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2_terseLabel_en-US" xlink:label="lab_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent capitalized additions, land improvements</link:label>
    <link:label id="lab_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2_label_en-US" xlink:label="lab_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule III Real Estate And Accumulated Depreciation Costs Capitalized Subsequent To Acquisition Land Improvements And Adjustments</link:label>
    <link:label id="lab_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2_documentation_en-US" xlink:label="lab_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SEC schedule III real estate and accumulated depreciation costs capitalized subsequent to acquisition land improvements and adjustments.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments" xlink:label="loc_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2" xlink:to="lab_land_SecScheduleIiiRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionLandImprovementsAndAdjustments_26AC0149104BA769452E22B04FBF22A2" xlink:type="arc" />
    <link:label id="lab_us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements_D2F4509CF59365FE013C22B04FBFC198_terseLabel_en-US" xlink:label="lab_us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements_D2F4509CF59365FE013C22B04FBFC198" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent capitalized additions, building &amp; improvements</link:label>
    <link:label id="lab_us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements_D2F4509CF59365FE013C22B04FBFC198_label_en-US" xlink:label="lab_us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements_D2F4509CF59365FE013C22B04FBFC198" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Building and Improvements</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements" xlink:label="loc_us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements_D2F4509CF59365FE013C22B04FBFC198" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements_D2F4509CF59365FE013C22B04FBFC198" xlink:to="lab_us-gaap_SECScheduleIIIRealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionBuildingsAndImprovements_D2F4509CF59365FE013C22B04FBFC198" xlink:type="arc" />
    <link:label id="lab_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE_terseLabel_en-US" xlink:label="lab_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Subsequent capitalized additions, horticulture</link:label>
    <link:label id="lab_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE_label_en-US" xlink:label="lab_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Horticulture</link:label>
    <link:label id="lab_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE_documentation_en-US" xlink:label="lab_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">SEC Schedule III, Real Estate and Accumulated Depreciation, Costs Capitalized Subsequent to Acquisition, Horticulture</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture" xlink:label="loc_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE" xlink:to="lab_land_SECScheduleIIIRealEstateandAccumulatedDepreciationCostsCapitalizedSubsequenttoAcquisitionHorticulture_14DAFF13392006C1698F22B04FBF2EFE" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7_terseLabel_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total cost, land and land improvements</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7_label_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate And Accumulated Depreciation Carrying Amount Of Land And Improvements</link:label>
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7_documentation_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate and accumulated depreciation carrying amount of land and improvements.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements" xlink:label="loc_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7" xlink:to="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfLandAndImprovements_F6EE44E7896E6941F58B22B04FBF5AD7" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_E0FFC97834003499840222B04FBF497C_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_E0FFC97834003499840222B04FBF497C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total cost, buildings &amp; improvements</link:label>
    <link:label id="lab_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_E0FFC97834003499840222B04FBF497C_label_en-US" xlink:label="lab_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_E0FFC97834003499840222B04FBF497C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Building and Improvements, Amount</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_E0FFC97834003499840222B04FBF497C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_E0FFC97834003499840222B04FBF497C" xlink:to="lab_us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_E0FFC97834003499840222B04FBF497C" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_84225B01B52CCBA7C7F722B04FBF005C_verboseLabel_en-US" xlink:label="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_84225B01B52CCBA7C7F722B04FBF005C" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Total cost, horticulture</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture" xlink:label="loc_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_84225B01B52CCBA7C7F722B04FBF005C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_84225B01B52CCBA7C7F722B04FBF005C" xlink:to="lab_land_RealEstateAndAccumulatedDepreciationCarryingAmountOfHorticulture_84225B01B52CCBA7C7F722B04FBF005C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateGrossAtCarryingValue_AEE5F91D41374DCF26FC22B04FBF9E85_totalLabel_en-US" xlink:label="lab_us-gaap_RealEstateGrossAtCarryingValue_AEE5F91D41374DCF26FC22B04FBF9E85" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:label="loc_us-gaap_RealEstateGrossAtCarryingValue_AEE5F91D41374DCF26FC22B04FBF9E85" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateGrossAtCarryingValue_AEE5F91D41374DCF26FC22B04FBF9E85" xlink:to="lab_us-gaap_RealEstateGrossAtCarryingValue_AEE5F91D41374DCF26FC22B04FBF9E85" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAccumulatedDepreciation_5C5682B9CBC4C169CF0422B04FBF3C56_negatedLabel_en-US" xlink:label="lab_us-gaap_RealEstateAccumulatedDepreciation_5C5682B9CBC4C169CF0422B04FBF3C56" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accumulated depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAccumulatedDepreciation" xlink:label="loc_us-gaap_RealEstateAccumulatedDepreciation_5C5682B9CBC4C169CF0422B04FBF3C56" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAccumulatedDepreciation_5C5682B9CBC4C169CF0422B04FBF3C56" xlink:to="lab_us-gaap_RealEstateAccumulatedDepreciation_5C5682B9CBC4C169CF0422B04FBF3C56" xlink:type="arc" />
    <link:label id="lab_land_NumberOfRealEstateFarms_138A0A6752E70DB363992B788604466B_terseLabel_en-US" xlink:label="lab_land_NumberOfRealEstateFarms_138A0A6752E70DB363992B788604466B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of Farms</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberOfRealEstateFarms" xlink:label="loc_land_NumberOfRealEstateFarms_138A0A6752E70DB363992B788604466B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberOfRealEstateFarms_138A0A6752E70DB363992B788604466B" xlink:to="lab_land_NumberOfRealEstateFarms_138A0A6752E70DB363992B788604466B" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E_terseLabel_en-US" xlink:label="lab_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">% of Total Acres</link:label>
    <link:label id="lab_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E_label_en-US" xlink:label="lab_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Area Of Land</link:label>
    <link:label id="lab_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E_documentation_en-US" xlink:label="lab_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of area of land.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfAreaOfLand" xlink:label="loc_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E" xlink:to="lab_land_PercentageOfAreaOfLand_311A0E7F316F934780F02B788604E29E" xlink:type="arc" />
    <link:label id="lab_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9_terseLabel_en-US" xlink:label="lab_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of regions farms are located</link:label>
    <link:label id="lab_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9_label_en-US" xlink:label="lab_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Regions Farms are Located</link:label>
    <link:label id="lab_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9_documentation_en-US" xlink:label="lab_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Regions Farms are Located</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberofRegionsFarmsareLocated" xlink:label="loc_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9" xlink:to="lab_land_NumberofRegionsFarmsareLocated_D0FC33CB8ADAD47DFCB12B788604FDF9" xlink:type="arc" />
    <link:label id="lab_us-gaap_Revenues_2AAB089CA01E669B592322008B948DC2_verboseLabel_en-US" xlink:label="lab_us-gaap_Revenues_2AAB089CA01E669B592322008B948DC2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Operating revenues</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_Revenues" xlink:label="loc_us-gaap_Revenues_2AAB089CA01E669B592322008B948DC2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Revenues_2AAB089CA01E669B592322008B948DC2" xlink:to="lab_us-gaap_Revenues_2AAB089CA01E669B592322008B948DC2" xlink:type="arc" />
    <link:label id="lab_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C_negatedTerseLabel_en-US" xlink:label="lab_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Operating expenses</link:label>
    <link:label id="lab_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C_label_en-US" xlink:label="lab_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Expenses Net Of Credit To Incentive Fee</link:label>
    <link:label id="lab_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C_documentation_en-US" xlink:label="lab_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Operating expenses net of credit to incentive fee.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OperatingExpensesNetOfCreditToIncentiveFee" xlink:label="loc_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C" xlink:to="lab_land_OperatingExpensesNetOfCreditToIncentiveFee_2AE18C1A031D2D63DBB422008B94E19C" xlink:type="arc" />
    <link:label id="lab_us-gaap_NonoperatingIncomeExpense_48A63169FD85DDF930C322008B94EFA9_terseLabel_en-US" xlink:label="lab_us-gaap_NonoperatingIncomeExpense_48A63169FD85DDF930C322008B94EFA9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other (expenses) income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NonoperatingIncomeExpense" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_48A63169FD85DDF930C322008B94EFA9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_48A63169FD85DDF930C322008B94EFA9" xlink:to="lab_us-gaap_NonoperatingIncomeExpense_48A63169FD85DDF930C322008B94EFA9" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProfitLoss_27E03241A6FBA0C2D93822008B9509E7_totalLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_27E03241A6FBA0C2D93822008B9509E7" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net (loss) income</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ProfitLoss" xlink:label="loc_us-gaap_ProfitLoss_27E03241A6FBA0C2D93822008B9509E7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProfitLoss_27E03241A6FBA0C2D93822008B9509E7" xlink:to="lab_us-gaap_ProfitLoss_27E03241A6FBA0C2D93822008B9509E7" xlink:type="arc" />
    <link:label id="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_5734D75B19BFCCC49DBF22008B95DD86_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_5734D75B19BFCCC49DBF22008B95DD86" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Dividends declared on Series B cumulative redeemable preferred stock</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PreferredStockDividendsIncomeStatementImpact" xlink:label="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_5734D75B19BFCCC49DBF22008B95DD86" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PreferredStockDividendsIncomeStatementImpact_5734D75B19BFCCC49DBF22008B95DD86" xlink:to="lab_us-gaap_PreferredStockDividendsIncomeStatementImpact_5734D75B19BFCCC49DBF22008B95DD86" xlink:type="arc" />
    <link:label id="lab_us-gaap_EarningsPerShareBasicAndDiluted_4E3F3A9E405DF88222F622008B965FF6_netLabel_en-US" xlink:label="lab_us-gaap_EarningsPerShareBasicAndDiluted_4E3F3A9E405DF88222F622008B965FF6" xlink:role="http://www.xbrl.org/2009/role/netLabel" xlink:type="resource" xml:lang="en-US">Earnings (loss) per common share &#8211; basic and diluted (in dollars per share)</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EarningsPerShareBasicAndDiluted" xlink:label="loc_us-gaap_EarningsPerShareBasicAndDiluted_4E3F3A9E405DF88222F622008B965FF6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EarningsPerShareBasicAndDiluted_4E3F3A9E405DF88222F622008B965FF6" xlink:to="lab_us-gaap_EarningsPerShareBasicAndDiluted_4E3F3A9E405DF88222F622008B965FF6" xlink:type="arc" />
    <link:label id="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05_terseLabel_en-US" xlink:label="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Organization And Summary Of Significant Accounting Policies [Table]</link:label>
    <link:label id="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05_label_en-US" xlink:label="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization And Summary Of Significant Accounting Policies [Table]</link:label>
    <link:label id="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05_documentation_en-US" xlink:label="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Organization and summary of significant accounting policies.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable" xlink:label="loc_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05" xlink:to="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesTable_F6945D434CEB98788221280792549A05" xlink:type="arc" />
    <link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_4B951D2E3E9FC02FF82928079254C6AE_terseLabel_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_4B951D2E3E9FC02FF82928079254C6AE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Buildings and Improvements</link:label>
    <link:label id="lab_us-gaap_BuildingAndBuildingImprovementsMember_4B951D2E3E9FC02FF82928079254C6AE_label_en-US" xlink:label="lab_us-gaap_BuildingAndBuildingImprovementsMember_4B951D2E3E9FC02FF82928079254C6AE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Building and Building Improvements [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_BuildingAndBuildingImprovementsMember" xlink:label="loc_us-gaap_BuildingAndBuildingImprovementsMember_4B951D2E3E9FC02FF82928079254C6AE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BuildingAndBuildingImprovementsMember_4B951D2E3E9FC02FF82928079254C6AE" xlink:to="lab_us-gaap_BuildingAndBuildingImprovementsMember_4B951D2E3E9FC02FF82928079254C6AE" xlink:type="arc" />
    <link:label id="lab_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220_terseLabel_en-US" xlink:label="lab_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Horticulture</link:label>
    <link:label id="lab_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220_label_en-US" xlink:label="lab_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Horticulture Inventory [Member]</link:label>
    <link:label id="lab_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220_documentation_en-US" xlink:label="lab_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Horticulture.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_HorticultureInventoryMember" xlink:label="loc_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220" xlink:to="lab_land_HorticultureInventoryMember_DF0D3533EC140371645F28079254B220" xlink:type="arc" />
    <link:label id="lab_us-gaap_EquipmentMember_78FCDE20DD08D5AE6B9A28079254A4CF_terseLabel_en-US" xlink:label="lab_us-gaap_EquipmentMember_78FCDE20DD08D5AE6B9A28079254A4CF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equipment and Fixtures</link:label>
    <link:label id="lab_us-gaap_EquipmentMember_78FCDE20DD08D5AE6B9A28079254A4CF_label_en-US" xlink:label="lab_us-gaap_EquipmentMember_78FCDE20DD08D5AE6B9A28079254A4CF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equipment [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EquipmentMember" xlink:label="loc_us-gaap_EquipmentMember_78FCDE20DD08D5AE6B9A28079254A4CF" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EquipmentMember_78FCDE20DD08D5AE6B9A28079254A4CF" xlink:to="lab_us-gaap_EquipmentMember_78FCDE20DD08D5AE6B9A28079254A4CF" xlink:type="arc" />
    <link:label id="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F_terseLabel_en-US" xlink:label="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Organization And Summary Of Significant Accounting Policies [Line Items]</link:label>
    <link:label id="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F_label_en-US" xlink:label="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Organization And Summary Of Significant Accounting Policies [Line Items]</link:label>
    <link:label id="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F_documentation_en-US" xlink:label="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Organization and summary of significant accounting policies.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems" xlink:label="loc_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F" xlink:to="lab_land_OrganizationAndSummaryOfSignificantAccountingPoliciesLineItems_3A4C936E4110A67A169728079254A21F" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_2DCF3BEA28395E1FBBD9280792546905_terseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_2DCF3BEA28395E1FBBD9280792546905" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated useful life</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_2DCF3BEA28395E1FBBD9280792546905_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_2DCF3BEA28395E1FBBD9280792546905" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Useful Life</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertyPlantAndEquipmentUsefulLife" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_2DCF3BEA28395E1FBBD9280792546905" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertyPlantAndEquipmentUsefulLife_2DCF3BEA28395E1FBBD9280792546905" xlink:to="lab_us-gaap_PropertyPlantAndEquipmentUsefulLife_2DCF3BEA28395E1FBBD9280792546905" xlink:type="arc" />
    <link:label id="lab_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4_terseLabel_en-US" xlink:label="lab_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Hypothetical expected lease-up periods for estimating carrying costs</link:label>
    <link:label id="lab_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4_label_en-US" xlink:label="lab_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expected Lease Up Period</link:label>
    <link:label id="lab_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4_documentation_en-US" xlink:label="lab_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Expected lease up period.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ExpectedLeaseUpPeriod" xlink:label="loc_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4" xlink:to="lab_land_ExpectedLeaseUpPeriod_412819BE7F630148311B2807925409C4" xlink:type="arc" />
    <link:label id="lab_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B_terseLabel_en-US" xlink:label="lab_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of impaired properties</link:label>
    <link:label id="lab_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B_label_en-US" xlink:label="lab_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Impaired Properties</link:label>
    <link:label id="lab_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B_documentation_en-US" xlink:label="lab_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of Impaired Properties</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NumberofImpairedProperties" xlink:label="loc_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B" xlink:to="lab_land_NumberofImpairedProperties_AC460B2326553B8F39B728079254A34B" xlink:type="arc" />
    <link:label id="lab_us-gaap_ImpairmentOfRealEstate_4A3072E512F702F3DA3028079254249F_terseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOfRealEstate_4A3072E512F702F3DA3028079254249F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairments recognized on real estate</link:label>
    <link:label id="lab_us-gaap_ImpairmentOfRealEstate_4A3072E512F702F3DA3028079254249F_label_en-US" xlink:label="lab_us-gaap_ImpairmentOfRealEstate_4A3072E512F702F3DA3028079254249F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment of Real Estate</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ImpairmentOfRealEstate" xlink:label="loc_us-gaap_ImpairmentOfRealEstate_4A3072E512F702F3DA3028079254249F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairmentOfRealEstate_4A3072E512F702F3DA3028079254249F" xlink:to="lab_us-gaap_ImpairmentOfRealEstate_4A3072E512F702F3DA3028079254249F" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalents_5E07441517B9F549946F280792540156_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents_5E07441517B9F549946F280792540156" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalents_5E07441517B9F549946F280792540156_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents_5E07441517B9F549946F280792540156" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash and Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_5E07441517B9F549946F280792540156" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalents_5E07441517B9F549946F280792540156" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalents_5E07441517B9F549946F280792540156" xlink:type="arc" />
    <link:label id="lab_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3_terseLabel_en-US" xlink:label="lab_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Prepaid costs for industrial generators</link:label>
    <link:label id="lab_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3_label_en-US" xlink:label="lab_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Prepaid Equipment Costs</link:label>
    <link:label id="lab_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3_documentation_en-US" xlink:label="lab_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Prepaid Equipment Costs</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PrepaidEquipmentCosts" xlink:label="loc_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3" xlink:to="lab_land_PrepaidEquipmentCosts_3F0A035F019A691B917F280792549CB3" xlink:type="arc" />
    <link:label id="lab_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5_terseLabel_en-US" xlink:label="lab_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Percentage of REIT taxable income to its stockholders</link:label>
    <link:label id="lab_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5_label_en-US" xlink:label="lab_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Percentage Of Annual Real Estate Investment Trust Taxable Income Distribute To Stockholders</link:label>
    <link:label id="lab_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5_documentation_en-US" xlink:label="lab_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Percentage of annual real estate investment trust taxable income distribute to stockholders.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders" xlink:label="loc_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5" xlink:to="lab_land_PercentageOfAnnualRealEstateInvestmentTrustTaxableIncomeDistributeToStockholders_02D4CF3E62A710EE223228079254BBA5" xlink:type="arc" />
    <link:label id="lab_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631_terseLabel_en-US" xlink:label="lab_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Taxable income from taxable REIT subsidiary</link:label>
    <link:label id="lab_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631_label_en-US" xlink:label="lab_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Taxable Income From Taxable REIT Subsidiary</link:label>
    <link:label id="lab_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631_documentation_en-US" xlink:label="lab_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Taxable Income From Taxable REIT Subsidiary</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_TaxableIncomeFromTaxableREITSubsidiary" xlink:label="loc_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631" xlink:to="lab_land_TaxableIncomeFromTaxableREITSubsidiary_1CDBECCA6230D95002B6280792545631" xlink:type="arc" />
    <link:label id="lab_us-gaap_NumberOfReportingUnits_1C4CEB95FE4BD33553B628079254AC76_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfReportingUnits_1C4CEB95FE4BD33553B628079254AC76" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of reporting segments</link:label>
    <link:label id="lab_us-gaap_NumberOfReportingUnits_1C4CEB95FE4BD33553B628079254AC76_label_en-US" xlink:label="lab_us-gaap_NumberOfReportingUnits_1C4CEB95FE4BD33553B628079254AC76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Reporting Units</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfReportingUnits" xlink:label="loc_us-gaap_NumberOfReportingUnits_1C4CEB95FE4BD33553B628079254AC76" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfReportingUnits_1C4CEB95FE4BD33553B628079254AC76" xlink:to="lab_us-gaap_NumberOfReportingUnits_1C4CEB95FE4BD33553B628079254AC76" xlink:type="arc" />
    <link:label id="lab_us-gaap_NumberOfOperatingSegments_AA4E9E567670621D06E92807925456B6_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfOperatingSegments_AA4E9E567670621D06E92807925456B6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of operating segments</link:label>
    <link:label id="lab_us-gaap_NumberOfOperatingSegments_AA4E9E567670621D06E92807925456B6_label_en-US" xlink:label="lab_us-gaap_NumberOfOperatingSegments_AA4E9E567670621D06E92807925456B6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number of Operating Segments</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NumberOfOperatingSegments" xlink:label="loc_us-gaap_NumberOfOperatingSegments_AA4E9E567670621D06E92807925456B6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NumberOfOperatingSegments_AA4E9E567670621D06E92807925456B6" xlink:to="lab_us-gaap_NumberOfOperatingSegments_AA4E9E567670621D06E92807925456B6" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits_6C61831ACE0AB81D22492807925440A4_terseLabel_en-US" xlink:label="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits_6C61831ACE0AB81D22492807925440A4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of operating ground lease arrangements</link:label>
    <link:label id="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits_6C61831ACE0AB81D22492807925440A4_label_en-US" xlink:label="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits_6C61831ACE0AB81D22492807925440A4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Subject to or Available for Operating Lease, Number of Units</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits" xlink:label="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits_6C61831ACE0AB81D22492807925440A4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits_6C61831ACE0AB81D22492807925440A4" xlink:to="lab_us-gaap_PropertySubjectToOrAvailableForOperatingLeaseNumberOfUnits_6C61831ACE0AB81D22492807925440A4" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C921C3A2320E77C053681FBE470DB05F_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C921C3A2320E77C053681FBE470DB05F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant lease payments, 2019</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C921C3A2320E77C053681FBE470DB05F_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C921C3A2320E77C053681FBE470DB05F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Due, Next Twelve Months</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C921C3A2320E77C053681FBE470DB05F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C921C3A2320E77C053681FBE470DB05F" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_C921C3A2320E77C053681FBE470DB05F" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_05337A985448316F59CD1FBE470DD388_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_05337A985448316F59CD1FBE470DD388" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant lease payments, 2020</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_05337A985448316F59CD1FBE470DD388_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_05337A985448316F59CD1FBE470DD388" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Two Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_05337A985448316F59CD1FBE470DD388" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_05337A985448316F59CD1FBE470DD388" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_05337A985448316F59CD1FBE470DD388" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5D2341044159D92D3C3E1FBE470ED1A3_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5D2341044159D92D3C3E1FBE470ED1A3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant lease payments, 2021</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5D2341044159D92D3C3E1FBE470ED1A3_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5D2341044159D92D3C3E1FBE470ED1A3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Three Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5D2341044159D92D3C3E1FBE470ED1A3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5D2341044159D92D3C3E1FBE470ED1A3" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5D2341044159D92D3C3E1FBE470ED1A3" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_20253126DED3F600AF801FBE470E7C30_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_20253126DED3F600AF801FBE470E7C30" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant lease payments, 2022</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_20253126DED3F600AF801FBE470E7C30_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_20253126DED3F600AF801FBE470E7C30" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Four Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_20253126DED3F600AF801FBE470E7C30" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_20253126DED3F600AF801FBE470E7C30" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_20253126DED3F600AF801FBE470E7C30" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_F9B17F04291384E7319E1FBE470E7EC6_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_F9B17F04291384E7319E1FBE470E7EC6" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant lease payments, 2023</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_F9B17F04291384E7319E1FBE470E7EC6_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_F9B17F04291384E7319E1FBE470E7EC6" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due in Five Years</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_F9B17F04291384E7319E1FBE470E7EC6" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_F9B17F04291384E7319E1FBE470E7EC6" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFiveYears_F9B17F04291384E7319E1FBE470E7EC6" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_16E0AE44F9D7D4AEB33C1FBE470E4D20_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_16E0AE44F9D7D4AEB33C1FBE470E4D20" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant lease payments, thereafter</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_16E0AE44F9D7D4AEB33C1FBE470E4D20_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_16E0AE44F9D7D4AEB33C1FBE470E4D20" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments, Due Thereafter</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_16E0AE44F9D7D4AEB33C1FBE470E4D20" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_16E0AE44F9D7D4AEB33C1FBE470E4D20" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueThereafter_16E0AE44F9D7D4AEB33C1FBE470E4D20" xlink:type="arc" />
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_366B92551E45656023A31FBE470EC86C_totalLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_366B92551E45656023A31FBE470EC86C" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Tenant lease payments, total</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_366B92551E45656023A31FBE470EC86C_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_366B92551E45656023A31FBE470EC86C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Future Minimum Payments Due</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDue" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_366B92551E45656023A31FBE470EC86C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_366B92551E45656023A31FBE470EC86C" xlink:to="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDue_366B92551E45656023A31FBE470EC86C" xlink:type="arc" />
    <link:label id="lab_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59_terseLabel_en-US" xlink:label="lab_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Land, Buildings, Improvements &amp; Horticulture</link:label>
    <link:label id="lab_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59_label_en-US" xlink:label="lab_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Land Buildings Site Improvement And Horticulture [Member]</link:label>
    <link:label id="lab_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59_documentation_en-US" xlink:label="lab_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Land Buildings Site Improvement And Horticulture [Member]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_LandBuildingsSiteImprovementAndHorticultureMember" xlink:label="loc_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59" xlink:to="lab_land_LandBuildingsSiteImprovementAndHorticultureMember_6313CC980E672381F6902200E2715E59" xlink:type="arc" />
    <link:label id="lab_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC_terseLabel_en-US" xlink:label="lab_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Equipment And Fixtures</link:label>
    <link:label id="lab_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC_label_en-US" xlink:label="lab_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equipment And Fixtures [Member]</link:label>
    <link:label id="lab_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC_documentation_en-US" xlink:label="lab_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Equipment and fixtures.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_EquipmentAndFixturesMember" xlink:label="loc_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC" xlink:to="lab_land_EquipmentAndFixturesMember_28D198B2AC644200E6522200E2727BCC" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateGrossAtCarryingValue_522D406F0DFA98A362B12200E273FBDB_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateGrossAtCarryingValue_522D406F0DFA98A362B12200E273FBDB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Aggregate cost</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateGrossAtCarryingValue" xlink:label="loc_us-gaap_RealEstateGrossAtCarryingValue_522D406F0DFA98A362B12200E273FBDB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateGrossAtCarryingValue_522D406F0DFA98A362B12200E273FBDB" xlink:to="lab_us-gaap_RealEstateGrossAtCarryingValue_522D406F0DFA98A362B12200E273FBDB" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_858C9363D9BB99232DE92200E273EAEB_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_858C9363D9BB99232DE92200E273EAEB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Estimated useful life</link:label>
    <link:label id="lab_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_858C9363D9BB99232DE92200E273EAEB_label_en-US" xlink:label="lab_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_858C9363D9BB99232DE92200E273EAEB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_858C9363D9BB99232DE92200E273EAEB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_858C9363D9BB99232DE92200E273EAEB" xlink:to="lab_us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_858C9363D9BB99232DE92200E273EAEB" xlink:type="arc" />
    <link:label id="lab_us-gaap_UseOfEstimates_2AE63804609CD8F87A511BAC26523F32_terseLabel_en-US" xlink:label="lab_us-gaap_UseOfEstimates_2AE63804609CD8F87A511BAC26523F32" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Use of Estimates</link:label>
    <link:label id="lab_us-gaap_UseOfEstimates_2AE63804609CD8F87A511BAC26523F32_label_en-US" xlink:label="lab_us-gaap_UseOfEstimates_2AE63804609CD8F87A511BAC26523F32" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Use of Estimates, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_UseOfEstimates" xlink:label="loc_us-gaap_UseOfEstimates_2AE63804609CD8F87A511BAC26523F32" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_UseOfEstimates_2AE63804609CD8F87A511BAC26523F32" xlink:to="lab_us-gaap_UseOfEstimates_2AE63804609CD8F87A511BAC26523F32" xlink:type="arc" />
    <link:label id="lab_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B_terseLabel_en-US" xlink:label="lab_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Real Estate and Lease Intangibles</link:label>
    <link:label id="lab_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B_label_en-US" xlink:label="lab_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate And Lease Intangibles Policy [Policy Text Block]</link:label>
    <link:label id="lab_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B_documentation_en-US" xlink:label="lab_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate and lease intangibles.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock" xlink:label="loc_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B" xlink:to="lab_land_RealEstateAndLeaseIntangiblesPolicyPolicyTextBlock_2A11D616975BA45874D21BAC2652721B" xlink:type="arc" />
    <link:label id="lab_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9_terseLabel_en-US" xlink:label="lab_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Impairment of Real Estate Assets</link:label>
    <link:label id="lab_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9_label_en-US" xlink:label="lab_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Impairment Policy [Policy Text Block]</link:label>
    <link:label id="lab_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9_documentation_en-US" xlink:label="lab_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Real estate impairment.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_RealEstateImpairmentPolicyPolicyTextBlock" xlink:label="loc_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9" xlink:to="lab_land_RealEstateImpairmentPolicyPolicyTextBlock_5B2A7A3C85439FC5655D1BAC265280E9" xlink:type="arc" />
    <link:label id="lab_us-gaap_LessorLeasesPolicyTextBlock_114A96958F29F5192EA51BAC26522410_terseLabel_en-US" xlink:label="lab_us-gaap_LessorLeasesPolicyTextBlock_114A96958F29F5192EA51BAC26522410" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tenant Improvements</link:label>
    <link:label id="lab_us-gaap_LessorLeasesPolicyTextBlock_114A96958F29F5192EA51BAC26522410_label_en-US" xlink:label="lab_us-gaap_LessorLeasesPolicyTextBlock_114A96958F29F5192EA51BAC26522410" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Lessor, Leases [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_LessorLeasesPolicyTextBlock" xlink:label="loc_us-gaap_LessorLeasesPolicyTextBlock_114A96958F29F5192EA51BAC26522410" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LessorLeasesPolicyTextBlock_114A96958F29F5192EA51BAC26522410" xlink:to="lab_us-gaap_LessorLeasesPolicyTextBlock_114A96958F29F5192EA51BAC26522410" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_38ABE33090B7B362B0521BAC265313B3_terseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_38ABE33090B7B362B0521BAC265313B3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_38ABE33090B7B362B0521BAC265313B3_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_38ABE33090B7B362B0521BAC265313B3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashAndCashEquivalentsPolicyTextBlock" xlink:label="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_38ABE33090B7B362B0521BAC265313B3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsPolicyTextBlock_38ABE33090B7B362B0521BAC265313B3" xlink:to="lab_us-gaap_CashAndCashEquivalentsPolicyTextBlock_38ABE33090B7B362B0521BAC265313B3" xlink:type="arc" />
    <link:label id="lab_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39_terseLabel_en-US" xlink:label="lab_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crop Inventory</link:label>
    <link:label id="lab_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39_label_en-US" xlink:label="lab_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crop Inventory [Policy Text Block]</link:label>
    <link:label id="lab_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39_documentation_en-US" xlink:label="lab_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crop Inventory [Policy Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CropInventoryPolicyTextBlock" xlink:label="loc_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39" xlink:to="lab_land_CropInventoryPolicyTextBlock_A86C5CA532591EEB9A051BAC26531D39" xlink:type="arc" />
    <link:label id="lab_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00_terseLabel_en-US" xlink:label="lab_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Crop Sales</link:label>
    <link:label id="lab_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00_label_en-US" xlink:label="lab_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Crop Sales, Policy [Policy Text Block]</link:label>
    <link:label id="lab_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00_documentation_en-US" xlink:label="lab_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Crop Sales, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CropSalesPolicyPolicyTextBlock" xlink:label="loc_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00" xlink:to="lab_land_CropSalesPolicyPolicyTextBlock_5717871B323935A0388D1BAC26535A00" xlink:type="arc" />
    <link:label id="lab_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3_terseLabel_en-US" xlink:label="lab_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Financing Costs</link:label>
    <link:label id="lab_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3_label_en-US" xlink:label="lab_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Financing Costs Policy [Policy Text Block]</link:label>
    <link:label id="lab_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3_documentation_en-US" xlink:label="lab_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Deferred financing costs.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DeferredFinancingCostsPolicyPolicyTextBlock" xlink:label="loc_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3" xlink:to="lab_land_DeferredFinancingCostsPolicyPolicyTextBlock_9B47B0DB62A37C6ADB9D1BAC2653AFF3" xlink:type="arc" />
    <link:label id="lab_us-gaap_DeferredChargesPolicyTextBlock_B9175CBC73FCC76296A81BAC26547F8B_terseLabel_en-US" xlink:label="lab_us-gaap_DeferredChargesPolicyTextBlock_B9175CBC73FCC76296A81BAC26547F8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Deferred Charges</link:label>
    <link:label id="lab_us-gaap_DeferredChargesPolicyTextBlock_B9175CBC73FCC76296A81BAC26547F8B_label_en-US" xlink:label="lab_us-gaap_DeferredChargesPolicyTextBlock_B9175CBC73FCC76296A81BAC26547F8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Deferred Charges, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DeferredChargesPolicyTextBlock" xlink:label="loc_us-gaap_DeferredChargesPolicyTextBlock_B9175CBC73FCC76296A81BAC26547F8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DeferredChargesPolicyTextBlock_B9175CBC73FCC76296A81BAC26547F8B" xlink:to="lab_us-gaap_DeferredChargesPolicyTextBlock_B9175CBC73FCC76296A81BAC26547F8B" xlink:type="arc" />
    <link:label id="lab_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8_terseLabel_en-US" xlink:label="lab_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Assets and Other Liabilities</link:label>
    <link:label id="lab_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8_label_en-US" xlink:label="lab_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets And Other Liabilities [Policy Text Block]</link:label>
    <link:label id="lab_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8_documentation_en-US" xlink:label="lab_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other assets and other liabilities policy.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock" xlink:label="loc_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8" xlink:to="lab_land_OtherAssetsAndOtherLiabilitiesPolicyTextBlock_564AEF8447DDEE40FD5E1BAC2654F4E8" xlink:type="arc" />
    <link:label id="lab_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C_terseLabel_en-US" xlink:label="lab_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Non-controlling Interests</link:label>
    <link:label id="lab_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C_label_en-US" xlink:label="lab_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interests [Policy Text Block]</link:label>
    <link:label id="lab_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C_documentation_en-US" xlink:label="lab_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Noncontrolling Interests Policy [Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_NoncontrollingInterestsPolicyTextBlock" xlink:label="loc_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C" xlink:to="lab_land_NoncontrollingInterestsPolicyTextBlock_CF0720F9F59305F1A36B1BAC2654C62C" xlink:type="arc" />
    <link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_9FBA24E296F4FF97F83B1BAC265475AD_terseLabel_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_9FBA24E296F4FF97F83B1BAC265475AD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Revenue Recognition</link:label>
    <link:label id="lab_us-gaap_RevenueRecognitionPolicyTextBlock_9FBA24E296F4FF97F83B1BAC265475AD_label_en-US" xlink:label="lab_us-gaap_RevenueRecognitionPolicyTextBlock_9FBA24E296F4FF97F83B1BAC265475AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Revenue Recognition, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_RevenueRecognitionPolicyTextBlock" xlink:label="loc_us-gaap_RevenueRecognitionPolicyTextBlock_9FBA24E296F4FF97F83B1BAC265475AD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RevenueRecognitionPolicyTextBlock_9FBA24E296F4FF97F83B1BAC265475AD" xlink:to="lab_us-gaap_RevenueRecognitionPolicyTextBlock_9FBA24E296F4FF97F83B1BAC265475AD" xlink:type="arc" />
    <link:label id="lab_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA_terseLabel_en-US" xlink:label="lab_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Income</link:label>
    <link:label id="lab_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA_label_en-US" xlink:label="lab_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Income Policy [Policy Text Block]</link:label>
    <link:label id="lab_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA_documentation_en-US" xlink:label="lab_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other income policy.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OtherIncomePolicyPolicyTextBlock" xlink:label="loc_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA" xlink:to="lab_land_OtherIncomePolicyPolicyTextBlock_B0FC55AA2E850205A3FC1BAC2655FCFA" xlink:type="arc" />
    <link:label id="lab_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25_terseLabel_en-US" xlink:label="lab_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Involuntary Conversions and Property and Casualty Recovery</link:label>
    <link:label id="lab_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25_label_en-US" xlink:label="lab_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Involuntary Conversions And Property And Casualty Recovery [Policy Text Block]</link:label>
    <link:label id="lab_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25_documentation_en-US" xlink:label="lab_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Involuntary conversions and property and casualty recovery policy.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock" xlink:label="loc_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25" xlink:to="lab_land_InvoluntaryConversionsAndPropertyAndCasualtyRecoveryPolicyTextBlock_DABFC9C6D34377A6920C1BAC2655BA25" xlink:type="arc" />
    <link:label id="lab_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770_terseLabel_en-US" xlink:label="lab_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on Sale of Real Estate</link:label>
    <link:label id="lab_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770_label_en-US" xlink:label="lab_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain On Sale Of Real Estate Policy [Policy Text Block]</link:label>
    <link:label id="lab_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770_documentation_en-US" xlink:label="lab_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Gain On Sale Of Real Estate Policy [Text Block]</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_GainOnSaleOfRealEstatePolicyPolicyTextBlock" xlink:label="loc_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770" xlink:to="lab_land_GainOnSaleOfRealEstatePolicyPolicyTextBlock_5F5CB050B1C5F2C819201BAC2655E770" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_9F844D1FDED59031FB531BAC2655DAC7_terseLabel_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_9F844D1FDED59031FB531BAC2655DAC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income Taxes</link:label>
    <link:label id="lab_us-gaap_IncomeTaxPolicyTextBlock_9F844D1FDED59031FB531BAC2655DAC7_label_en-US" xlink:label="lab_us-gaap_IncomeTaxPolicyTextBlock_9F844D1FDED59031FB531BAC2655DAC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income Tax, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_IncomeTaxPolicyTextBlock" xlink:label="loc_us-gaap_IncomeTaxPolicyTextBlock_9F844D1FDED59031FB531BAC2655DAC7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeTaxPolicyTextBlock_9F844D1FDED59031FB531BAC2655DAC7" xlink:to="lab_us-gaap_IncomeTaxPolicyTextBlock_9F844D1FDED59031FB531BAC2655DAC7" xlink:type="arc" />
    <link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_52062BA847720F8F3A201BAC2656AEC7_terseLabel_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_52062BA847720F8F3A201BAC2656AEC7" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Segment Reporting</link:label>
    <link:label id="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_52062BA847720F8F3A201BAC2656AEC7_label_en-US" xlink:label="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_52062BA847720F8F3A201BAC2656AEC7" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Segment Reporting, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SegmentReportingPolicyPolicyTextBlock" xlink:label="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_52062BA847720F8F3A201BAC2656AEC7" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SegmentReportingPolicyPolicyTextBlock_52062BA847720F8F3A201BAC2656AEC7" xlink:to="lab_us-gaap_SegmentReportingPolicyPolicyTextBlock_52062BA847720F8F3A201BAC2656AEC7" xlink:type="arc" />
    <link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_948AB5F70D8AD02B2DEB1BAC265671C0_terseLabel_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_948AB5F70D8AD02B2DEB1BAC265671C0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Reclassifications</link:label>
    <link:label id="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_948AB5F70D8AD02B2DEB1BAC265671C0_label_en-US" xlink:label="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_948AB5F70D8AD02B2DEB1BAC265671C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Reclassification, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_PriorPeriodReclassificationAdjustmentDescription" xlink:label="loc_us-gaap_PriorPeriodReclassificationAdjustmentDescription_948AB5F70D8AD02B2DEB1BAC265671C0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PriorPeriodReclassificationAdjustmentDescription_948AB5F70D8AD02B2DEB1BAC265671C0" xlink:to="lab_us-gaap_PriorPeriodReclassificationAdjustmentDescription_948AB5F70D8AD02B2DEB1BAC265671C0" xlink:type="arc" />
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_4EB93978771F1B1D4DE31BAC26566665_terseLabel_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_4EB93978771F1B1D4DE31BAC26566665" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Recently-Issued Accounting Pronouncements</link:label>
    <link:label id="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_4EB93978771F1B1D4DE31BAC26566665_label_en-US" xlink:label="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_4EB93978771F1B1D4DE31BAC26566665" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock" xlink:label="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_4EB93978771F1B1D4DE31BAC26566665" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_4EB93978771F1B1D4DE31BAC26566665" xlink:to="lab_us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_4EB93978771F1B1D4DE31BAC26566665" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsAxis_E6354EA3DEFE26A73EEF2200E2AF8FC4_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsAxis_E6354EA3DEFE26A73EEF2200E2AF8FC4" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends [Axis]</link:label>
    <link:label id="lab_us-gaap_DividendsAxis_E6354EA3DEFE26A73EEF2200E2AF8FC4_label_en-US" xlink:label="lab_us-gaap_DividendsAxis_E6354EA3DEFE26A73EEF2200E2AF8FC4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsAxis" xlink:label="loc_us-gaap_DividendsAxis_E6354EA3DEFE26A73EEF2200E2AF8FC4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsAxis_E6354EA3DEFE26A73EEF2200E2AF8FC4" xlink:to="lab_us-gaap_DividendsAxis_E6354EA3DEFE26A73EEF2200E2AF8FC4" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsDomain_51B0F2385E19EE5709582200E2AFDF7B_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsDomain_51B0F2385E19EE5709582200E2AFDF7B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Dividends [Domain]</link:label>
    <link:label id="lab_us-gaap_DividendsDomain_51B0F2385E19EE5709582200E2AFDF7B_label_en-US" xlink:label="lab_us-gaap_DividendsDomain_51B0F2385E19EE5709582200E2AFDF7B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsDomain" xlink:label="loc_us-gaap_DividendsDomain_51B0F2385E19EE5709582200E2AFDF7B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsDomain_51B0F2385E19EE5709582200E2AFDF7B" xlink:to="lab_us-gaap_DividendsDomain_51B0F2385E19EE5709582200E2AFDF7B" xlink:type="arc" />
    <link:label id="lab_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA_terseLabel_en-US" xlink:label="lab_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period One</link:label>
    <link:label id="lab_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA_label_en-US" xlink:label="lab_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend Period One [Member]</link:label>
    <link:label id="lab_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA_documentation_en-US" xlink:label="lab_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dividend period one.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DividendPeriodOneMember" xlink:label="loc_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA" xlink:to="lab_land_DividendPeriodOneMember_0000922776C6CEF6F6992200E2AF50AA" xlink:type="arc" />
    <link:label id="lab_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452_terseLabel_en-US" xlink:label="lab_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period Two</link:label>
    <link:label id="lab_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452_label_en-US" xlink:label="lab_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend Period Two [Member]</link:label>
    <link:label id="lab_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452_documentation_en-US" xlink:label="lab_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dividend period two.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DividendPeriodTwoMember" xlink:label="loc_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452" xlink:to="lab_land_DividendPeriodTwoMember_1E56C2BAE068A54BD85D2200E2B01452" xlink:type="arc" />
    <link:label id="lab_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8_terseLabel_en-US" xlink:label="lab_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Period Three</link:label>
    <link:label id="lab_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8_label_en-US" xlink:label="lab_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividend Period Three [Member]</link:label>
    <link:label id="lab_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8_documentation_en-US" xlink:label="lab_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Dividend period three.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DividendPeriodThreeMember" xlink:label="loc_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8" xlink:to="lab_land_DividendPeriodThreeMember_526916D265A2060E9EDF2200E2B0EBD8" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_65A8DDE10C01DD3EFE1C2200E2B07B90_verboseLabel_en-US" xlink:label="lab_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_65A8DDE10C01DD3EFE1C2200E2B07B90" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Record Date</link:label>
    <link:label id="lab_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_65A8DDE10C01DD3EFE1C2200E2B07B90_label_en-US" xlink:label="lab_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_65A8DDE10C01DD3EFE1C2200E2B07B90" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends Payable, Date of Record</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsPayableDateOfRecordDayMonthAndYear" xlink:label="loc_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_65A8DDE10C01DD3EFE1C2200E2B07B90" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_65A8DDE10C01DD3EFE1C2200E2B07B90" xlink:to="lab_us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_65A8DDE10C01DD3EFE1C2200E2B07B90" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendPayableDateToBePaidDayMonthAndYear_B4EE3BECDD6D65E96BF32200E2B0046A_verboseLabel_en-US" xlink:label="lab_us-gaap_DividendPayableDateToBePaidDayMonthAndYear_B4EE3BECDD6D65E96BF32200E2B0046A" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Payment Date</link:label>
    <link:label id="lab_us-gaap_DividendPayableDateToBePaidDayMonthAndYear_B4EE3BECDD6D65E96BF32200E2B0046A_label_en-US" xlink:label="lab_us-gaap_DividendPayableDateToBePaidDayMonthAndYear_B4EE3BECDD6D65E96BF32200E2B0046A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends Payable, Date to be Paid</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendPayableDateToBePaidDayMonthAndYear" xlink:label="loc_us-gaap_DividendPayableDateToBePaidDayMonthAndYear_B4EE3BECDD6D65E96BF32200E2B0046A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendPayableDateToBePaidDayMonthAndYear_B4EE3BECDD6D65E96BF32200E2B0046A" xlink:to="lab_us-gaap_DividendPayableDateToBePaidDayMonthAndYear_B4EE3BECDD6D65E96BF32200E2B0046A" xlink:type="arc" />
    <link:label id="lab_us-gaap_DividendsPayableAmountPerShare_D148B274147AF8FDB71F2200E2B10333_terseLabel_en-US" xlink:label="lab_us-gaap_DividendsPayableAmountPerShare_D148B274147AF8FDB71F2200E2B10333" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Distribution per Share</link:label>
    <link:label id="lab_us-gaap_DividendsPayableAmountPerShare_D148B274147AF8FDB71F2200E2B10333_label_en-US" xlink:label="lab_us-gaap_DividendsPayableAmountPerShare_D148B274147AF8FDB71F2200E2B10333" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Dividends Payable, Amount Per Share</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DividendsPayableAmountPerShare" xlink:label="loc_us-gaap_DividendsPayableAmountPerShare_D148B274147AF8FDB71F2200E2B10333" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DividendsPayableAmountPerShare_D148B274147AF8FDB71F2200E2B10333" xlink:to="lab_us-gaap_DividendsPayableAmountPerShare_D148B274147AF8FDB71F2200E2B10333" xlink:type="arc" />
    <link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_421F605DF9267186710C3555081CB033_terseLabel_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_6068FF2BDEB85AE7972FA7DEFE2B5AF3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Significant Accounting Policies</link:label>
    <link:label id="lab_us-gaap_SignificantAccountingPoliciesTextBlock_421F605DF9267186710C3555081CB033_label_en-US" xlink:label="lab_us-gaap_SignificantAccountingPoliciesTextBlock_6068FF2BDEB85AE7972FA7DEFE2B5AF3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Significant Accounting Policies [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_SignificantAccountingPoliciesTextBlock" xlink:label="loc_us-gaap_SignificantAccountingPoliciesTextBlock_6068FF2BDEB85AE7972FA7DEFE2B5AF3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SignificantAccountingPoliciesTextBlock_6068FF2BDEB85AE7972FA7DEFE2B5AF3" xlink:to="lab_us-gaap_SignificantAccountingPoliciesTextBlock_6068FF2BDEB85AE7972FA7DEFE2B5AF3" xlink:type="arc" />
    <link:label id="lab_us-gaap_DueFromRelatedParties_81095F63ED0647E0CED4213B620204CD_terseLabel_en-US" xlink:label="lab_us-gaap_DueFromRelatedParties_81095F63ED0647E0CED4213B620204CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Due from Gladstone Securities</link:label>
    <link:label id="lab_us-gaap_DueFromRelatedParties_81095F63ED0647E0CED4213B620204CD_label_en-US" xlink:label="lab_us-gaap_DueFromRelatedParties_81095F63ED0647E0CED4213B620204CD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due from Related Parties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DueFromRelatedParties" xlink:label="loc_us-gaap_DueFromRelatedParties_81095F63ED0647E0CED4213B620204CD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DueFromRelatedParties_81095F63ED0647E0CED4213B620204CD" xlink:to="lab_us-gaap_DueFromRelatedParties_81095F63ED0647E0CED4213B620204CD" xlink:type="arc" />
    <link:label id="lab_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA_terseLabel_en-US" xlink:label="lab_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Management fee</link:label>
    <link:label id="lab_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA_label_en-US" xlink:label="lab_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Management Fee Due To Advisor</link:label>
    <link:label id="lab_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA_documentation_en-US" xlink:label="lab_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Management fee due to advisor.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ManagementFeeDueToAdvisor" xlink:label="loc_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA" xlink:to="lab_land_ManagementFeeDueToAdvisor_D7FB57D45F7BA2E0A58F1FBE438F47DA" xlink:type="arc" />
    <link:label id="lab_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086_terseLabel_en-US" xlink:label="lab_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Capital gains fee</link:label>
    <link:label id="lab_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086_label_en-US" xlink:label="lab_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Gains Fee Due to Advisor</link:label>
    <link:label id="lab_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086_documentation_en-US" xlink:label="lab_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Capital Gains Fee Due to Advisor</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CapitalGainsFeeDuetoAdvisor" xlink:label="loc_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086" xlink:to="lab_land_CapitalGainsFeeDuetoAdvisor_C2F9AABA38EC16B8AA111FBE4390E086" xlink:type="arc" />
    <link:label id="lab_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D_negatedTerseLabel_en-US" xlink:label="lab_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Credits to fees</link:label>
    <link:label id="lab_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D_label_en-US" xlink:label="lab_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Credit to Fees Due to Advisor</link:label>
    <link:label id="lab_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D_documentation_en-US" xlink:label="lab_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Credit to Fees Due to Advisor</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_CredittoFeesDuetoAdvisor" xlink:label="loc_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D" xlink:to="lab_land_CredittoFeesDuetoAdvisor_3808B116A859B5A408061FBE4390448D" xlink:type="arc" />
    <link:label id="lab_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819_terseLabel_en-US" xlink:label="lab_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other due to Adviser</link:label>
    <link:label id="lab_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819_label_en-US" xlink:label="lab_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Due To Advisor</link:label>
    <link:label id="lab_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819_documentation_en-US" xlink:label="lab_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Other due to advisor.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_OtherDueToAdvisor" xlink:label="loc_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819" xlink:to="lab_land_OtherDueToAdvisor_174E74D748CA979AAE5C1FBE43900819" xlink:type="arc" />
    <link:label id="lab_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC_totalLabel_en-US" xlink:label="lab_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total due to Adviser</link:label>
    <link:label id="lab_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC_label_en-US" xlink:label="lab_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Due To From Adviser</link:label>
    <link:label id="lab_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC_documentation_en-US" xlink:label="lab_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Due to from adviser.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_DueToFromAdviser" xlink:label="loc_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC" xlink:to="lab_land_DueToFromAdviser_23498105F636DA24D7A31FBE439041DC" xlink:type="arc" />
    <link:label id="lab_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B_terseLabel_en-US" xlink:label="lab_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Administration fee</link:label>
    <link:label id="lab_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B_label_en-US" xlink:label="lab_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Administrative Fee Due To Administrator</link:label>
    <link:label id="lab_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B_documentation_en-US" xlink:label="lab_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Administrative fee due to administrator.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_AdministrativeFeeDueToAdministrator" xlink:label="loc_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B" xlink:to="lab_land_AdministrativeFeeDueToAdministrator_FCE0F130D7EFC8B4A2C21FBE43904D8B" xlink:type="arc" />
    <link:label id="lab_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19_totalLabel_en-US" xlink:label="lab_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total due to Administrator</link:label>
    <link:label id="lab_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19_label_en-US" xlink:label="lab_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fee Due To Administrator</link:label>
    <link:label id="lab_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19_documentation_en-US" xlink:label="lab_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fee due to administrator.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_FeeDueToAdministrator" xlink:label="loc_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19" xlink:to="lab_land_FeeDueToAdministrator_1F7448672FB3C1A8E5B11FBE4391AA19" xlink:type="arc" />
    <link:label id="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_4AF9CC8EE0C4120667871FBE4396D701_totalLabel_en-US" xlink:label="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_4AF9CC8EE0C4120667871FBE4396D701" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total due to related parties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DueToRelatedPartiesCurrentAndNoncurrent" xlink:label="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_4AF9CC8EE0C4120667871FBE4396D701" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_4AF9CC8EE0C4120667871FBE4396D701" xlink:to="lab_us-gaap_DueToRelatedPartiesCurrentAndNoncurrent_4AF9CC8EE0C4120667871FBE4396D701" xlink:type="arc" />
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_8551661DA06F1BF9D5EF35550994FC4B_terseLabel_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_472F50EB45A15BF4838434CA2543D525" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings</link:label>
    <link:label id="lab_us-gaap_DebtDisclosureTextBlock_8551661DA06F1BF9D5EF35550994FC4B_label_en-US" xlink:label="lab_us-gaap_DebtDisclosureTextBlock_472F50EB45A15BF4838434CA2543D525" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Debt Disclosure [Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_DebtDisclosureTextBlock" xlink:label="loc_us-gaap_DebtDisclosureTextBlock_472F50EB45A15BF4838434CA2543D525" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_DebtDisclosureTextBlock_472F50EB45A15BF4838434CA2543D525" xlink:to="lab_us-gaap_DebtDisclosureTextBlock_472F50EB45A15BF4838434CA2543D525" xlink:type="arc" />
    <link:label id="lab_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_6259E3222914A7AAD61B355509AB02BD_terseLabel_en-US" xlink:label="lab_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_7A37E815AE2956B69B1749FEB1ADCB68" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary of Management Fees, Incentive Fees and Associated Credits and Administration Fees</link:label>
    <link:label id="lab_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_6259E3222914A7AAD61B355509AB02BD_label_en-US" xlink:label="lab_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_7A37E815AE2956B69B1749FEB1ADCB68" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule Of Related Party Transaction Fees [Table Text Block]</link:label>
    <link:label id="lab_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_6259E3222914A7AAD61B355509AB02BD_documentation_en-US" xlink:label="lab_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_7A37E815AE2956B69B1749FEB1ADCB68" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Schedule of related party transaction fees.</link:label>
    <link:loc xlink:href="land-20181231.xsd#land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock" xlink:label="loc_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_7A37E815AE2956B69B1749FEB1ADCB68" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_7A37E815AE2956B69B1749FEB1ADCB68" xlink:to="lab_land_ScheduleOfRelatedPartyTransactionFeesTableTextBlock_7A37E815AE2956B69B1749FEB1ADCB68" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_1949DDDF0888D0DE0F9C355509AB82B7_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_3C0BCA197C1B58B6B4F4FFA29410AFB3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Details of Amounts Due to Related Parties on Our Accompanying Condensed Consolidated Balance Sheets</link:label>
    <link:label id="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_1949DDDF0888D0DE0F9C355509AB82B7_label_en-US" xlink:label="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_3C0BCA197C1B58B6B4F4FFA29410AFB3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Related Party Transactions [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock" xlink:label="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_3C0BCA197C1B58B6B4F4FFA29410AFB3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_3C0BCA197C1B58B6B4F4FFA29410AFB3" xlink:to="lab_us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock_3C0BCA197C1B58B6B4F4FFA29410AFB3" xlink:type="arc" />
  </link:labelLink>
</link:linkbase>
