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          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_PartnershipIncomeExpensesAndCashDistributionsAbstract" xlink:label="ghi_PartnershipIncomeExpensesAndCashDistributionsAbstract"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember" xlink:label="ghi_SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_DerivativeWeightedAverageFixedInterestRateYear9" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear9"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="us-gaap_PaymentsOfFinancingCosts"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_LegacyCommonsAtSignalHillsMember" xlink:label="ghi_LegacyCommonsAtSignalHillsMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable" xlink:label="us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_AvistarIn09Member" xlink:label="ghi_AvistarIn09Member"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountingPoliciesAbstract" xlink:label="us-gaap_AccountingPoliciesAbstract"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_DebtFinancingAbstract" xlink:label="ghi_DebtFinancingAbstract"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd#srt_ScenarioPreviouslyReportedMember" xlink:label="srt_ScenarioPreviouslyReportedMember"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_PercentageOfCapitalProvidedForJointVenture" xlink:label="ghi_PercentageOfCapitalProvidedForJointVenture"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_LeaseTransactionAnnualIncrementPercentageInRent" xlink:label="ghi_LeaseTransactionAnnualIncrementPercentageInRent"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_TierTwoDistributionMember" xlink:label="ghi_TierTwoDistributionMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GuaranteeObligationsMaximumExposure" xlink:label="us-gaap_GuaranteeObligationsMaximumExposure"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_BankUnitedGeneralMember" xlink:label="ghi_BankUnitedGeneralMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_AnaheimWalnutAKAWellspringApartmentsMember" xlink:label="ghi_AnaheimWalnutAKAWellspringApartmentsMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ClassOfStockDomain" xlink:label="us-gaap_ClassOfStockDomain"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_DebtInstrumentMaturityDateMonthAndYear" xlink:label="ghi_DebtInstrumentMaturityDateMonthAndYear"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_AverageNotionalAmountYear3" xlink:label="ghi_AverageNotionalAmountYear3"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_GatewayAndYarbroughPredevelopmentProjectMember" xlink:label="ghi_GatewayAndYarbroughPredevelopmentProjectMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock" xlink:label="us-gaap_ScheduleOfAccountsPayableAndAccruedLiabilitiesTableTextBlock"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_AverageNotionalAmountYear2" xlink:label="ghi_AverageNotionalAmountYear2"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_AvistarOnTheHillsSeriesAMember" xlink:label="ghi_AvistarOnTheHillsSeriesAMember"/>
          <link:loc xlink:type="locator" xlink:href="https://xbrl.sec.gov/dei/2025/dei-2025.xsd#dei_EntityEmergingGrowthCompany" xlink:label="dei_EntityEmergingGrowthCompany"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_MortgageLoansOnRealEstateDiscountPercentageOfMortgages" xlink:label="ghi_MortgageLoansOnRealEstateDiscountPercentageOfMortgages"/>
          <link:loc xlink:type="locator" xlink:href="ghi-20250630.xsd#ghi_DebtInstrumentPaymentOfExtensionFee" xlink:label="ghi_DebtInstrumentPaymentOfExtensionFee"/>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyXFTwoThousandNineHundredAndEightCentennialCrossingsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2020 XF 2908 Centennial Crossings Property Loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyXFTwoThousandNineHundredAndEightCentennialCrossingsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty X F Two Thousand Nine Hundred And Eight Centennial Crossings Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyXFTwoThousandNineHundredAndEightCentennialCrossingsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2020 - XF 2908 - Centennial Crossings Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BarclaysCapitalIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Barclays Capital Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BarclaysCapitalIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Barclays Capital Inc Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BarclaysCapitalIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Barclays capital inc member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptSecuritiesOtherThanMRBsAndOtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax-exempt and Other Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptSecuritiesOtherThanMRBsAndOtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Exempt Securities Other Than M R Bs And Other Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptSecuritiesOtherThanMRBsAndOtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax-exempt securities other than MRBs and other investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, Weighted Average Fixed Interest Rate, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at empire MRBs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at Empire MRBs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at Empire MRBs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Residency at Empire MRB</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentMaturityDateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentMaturityDateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Commitment maturity date description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentMaturityDateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitment Maturity Date Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentMaturityDateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment maturity date description.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear6_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount, Year 6</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear6_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average Notional Amount, Year 6</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear6_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2031</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HilltopAtSignalHillsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hilltop at signal hills gil member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HilltopAtSignalHillsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hilltop at Signal Hills GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HilltopAtSignalHillsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hilltop at Signal Hills GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Write-offs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Financing Receivable, Allowance for Credit Loss, Writeoff, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedTwoYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value net derivative asset liability measured on recurring basis with unobservable inputs ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Derivative Assets (Liabilities) at Fair Value, ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Derivative Assets (Liabilities) at Fair Value, beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis with Unobservable Inputs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtHanfordSquareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Village at Hanford Square [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtHanfordSquareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Village at Hanford Square [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtHanfordSquareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Village at Hanford Square.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MarketRateJointVentureInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Market-Rate Joint Venture Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MarketRateJointVentureInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Market-Rate Joint Venture Investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbThreeMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series BB Three Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbThreeMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series BB Three Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbThreeMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series BB-3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position Location, Balance [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loan Receivable Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loan receivable, net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Property loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPrincipalAndAccruedInterestRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPrincipalAndAccruedInterestRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Month and year of principal and accrued interest redeemed.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPrincipalAndAccruedInterestRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Month And Year Of Principal And Accrued Interest Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntityClassificationOfCarryingAmountAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Interest Entities Property Asset Carrying Value by Asset and Maximum Exposure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntityClassificationOfCarryingAmountAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity Classification Of Carrying Amount Assets Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntityClassificationOfCarryingAmountAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Balance sheet classification of the Variable Interest Entity's (VIE) assets included in the statement of financial position of the reporting entity. This element is applicable for variable interests whether the reporting entity has a controlling financial interest (primary beneficiary) or not. [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesDistributionRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Beneficial unit certificates distribution ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesDistributionRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Beneficial unit certificates distribution ratio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainLossFromInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings (losses) from investments in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainLossFromInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) From Investments In Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainLossFromInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain (loss) from investments in unconsolidated entities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSaleOfSecuritiesGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sale Of Securities Gain Loss Included In Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSaleOfSecuritiesGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset sale of securities gain (loss) included in earnings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSaleOfSecuritiesGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total gain (losses) Included in earnings(gain on sale of mortgag revenue bond)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEntrepreneurSeriesJFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at entrepreneur series J five.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEntrepreneurSeriesJFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at Entrepreneur Series J Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEntrepreneurSeriesJFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur - Series J-5 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitment Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental disclosure of noncash investing and financing activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiborMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">LIBOR.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiborMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">LIBOR [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Taxable governmental issuer loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one XF two thousand nine hundred and twenty six.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty one XF Two Thousand Nine Hundred And Twenty Six [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2926 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnitsSoldInPrivatePlacement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A Preferred Units outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnitsSoldInPrivatePlacement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Units, Sold in Private Placement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnitsSoldInPrivatePlacement_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Preferred Units outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingResetFrequency_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reset Frequency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingResetFrequency_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Reset Frequency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingResetFrequency_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt financing reset frequency.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OmahaNeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Omaha, NE [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OmahaNeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Omaha, NE [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OmahaNeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Omaha, NE [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expenses:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeritageSquareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Heritage Square [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeritageSquareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Heritage Square [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeritageSquareMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Heritage square.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Inputs, Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AcquisitionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisition [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AcquisitionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquisition [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AcquisitionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquisition [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnitBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted unit compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnitBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Unit-Based Payment Arrangement, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Willow Place GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Willow Place GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Willow Place GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MeadowValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Meadow Valley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MeadowValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Meadow Valley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MeadowValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Meadow valley.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment maturity date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAssetStatementOfFinancialPositionExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseMaximumCommitmentAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum Committed Amounts Remaining</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseMaximumCommitmentAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Maximum Commitment Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseMaximumCommitmentAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond Purchase Maximum Commitment Amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OaksAtGeorgetownMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Oaks at Georgetown [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OaksAtGeorgetownMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oaks At Georgetown [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OaksAtGeorgetownMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oaks at Georgetown.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Available for Sale Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Available For Sale Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Available for Sale Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of available for sale securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Stated Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stated interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TwentyTwentyFourPFASecuritizationTransactionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Twenty Twenty Four PFA Securitization Transaction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TwentyTwentyFourPFASecuritizationTransactionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Twenty twenty four pfa securitization transaction.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TwentyTwentyFourPFASecuritizationTransactionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">2024 PFA Securitization Transaction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal Entity of Counterparty, Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivablesByLegalEntityOfCounterpartyTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity of Counterparty, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquitySharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Partnership shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquitySharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable preferred units, outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquitySharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingBasisSpreadOnVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Variable rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingBasisSpreadOnVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingBasisSpreadOnVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Financing Basis Spread On Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingBasisSpreadOnVariableRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan financing basis spread on variable rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from the sale of BUCs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Beneficial Unit Certificates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds From Sale Of Beneficial Unit Certificates.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestDifferenceBetweenCarryingAmountAndMaximumExposure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestDifferenceBetweenCarryingAmountAndMaximumExposure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity, Nonconsolidated, Comparison of Carrying Amount of Assets and Liabilities to Maximum Loss Exposure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestDifferenceBetweenCarryingAmountAndMaximumExposure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Variable Interest Entity, Nonconsolidated, Comparison of Carrying Amount of Assets and Liabilities to Maximum Loss Exposure, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash and Cash Equivalents, at Carrying Value, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash and Cash Equivalents, at Carrying Value, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and Cash Equivalents, at Carrying Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Contractual Maturities of Borrowings</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Governmental Issuer Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental Issuer Loans Held in Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur - Series J-1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the entrepreneur J One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At The Entrepreneur J One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConroeTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Conroe TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConroeTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Conroe T X [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConroeTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Conroe TX.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfRentalUnitsFinancedByTaxExemptLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of rental units financed by tax-exempt loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfRentalUnitsFinancedByTaxExemptLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Rental Units Financed By Tax Exempt Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfRentalUnitsFinancedByTaxExemptLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of rental units financed by tax-exempt loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupDisposedOfBySaleNotDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sold Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BulverdeTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bulverde, TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BulverdeTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bulverde T X [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BulverdeTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bulverde, TX.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_TX_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_TX_lbl" xlink:role="http://www.xbrl.org/2003/role/label">TEXAS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPrincipalAndAccruedInterestPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of principal and accrued interest paid.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPrincipalAndAccruedInterestPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Principal and Accrued Interest Paid [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPrincipalAndAccruedInterestPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Principal and Accrued Interest Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationByAssetClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Class [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NJ_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NJ [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NJ_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEW JERSEY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromTaxableMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal payments received on taxable mortgage revenue bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromTaxableMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Taxable Mortgage Revenue Bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromTaxableMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from taxable mortgage revenue bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest receivable, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentToProvideAdditionalFundingOfMrb_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership re-allocated funding of taxable MRB</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentToProvideAdditionalFundingOfMrb_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitment to Provide Additional Funding of MRB</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentToProvideAdditionalFundingOfMrb_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment to provide additional funding of MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Osprey Village Supplemental [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Osprey Village Supplemental [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Osprey village supplemental.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LimitedPartnersCapitalAccount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beneficial Unit Certificates (Note 1)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LimitedPartnersCapitalAccount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Limited Partners' Capital Account, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LimitedPartnersCapitalAccount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Limited Partners' Capital Account</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtTheOaksSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At The Oaks Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtTheOaksSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar at the oaks series a.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtTheOaksSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at the Oaks - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BrookstoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Brookstone [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BrookstoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Brookstone [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BrookstoneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Brookstone.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFourYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series P-T.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series P-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPTMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series P-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ExchangeOfRedeemablePreferredUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Exchange of redeemable preferred units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ExchangeOfRedeemablePreferredUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Exchange of Redeemable Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ExchangeOfRedeemablePreferredUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Exchange of redeemable Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MindenNvMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minden, NV.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MindenNvMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minden, NV [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesHMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series H [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesHMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series H Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesHMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series H Mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AccruedInterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accrued interest receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AccruedInterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Interest Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AccruedInterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Interest Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyThreeXFThreeThousandAndSeventySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2023 - XF3077 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyThreeXFThreeThousandAndSeventySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty Three X F Three Thousand And Seventy Seven [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyThreeXFThreeThousandAndSeventySevenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty three x f three thousand and seventy seven.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Units Awarded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfNonCumulativeCashDividend_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Distributions paid quarterly at annual fixed rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfNonCumulativeCashDividend_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfNonCumulativeCashDividend_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Non Cumulative Cash Dividend</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfNonCumulativeCashDividend_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of non-cumulative cash dividend.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities and Partners&#700; Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PayablesAndAccrualsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payables and Accruals [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecondMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series B [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecondMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Second Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Recovery of prior credit loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recovery of prior credit loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss, Recovery</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensSeriesAOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Woodington Gardens - Series A - 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensSeriesAOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Woodington Gardens Series A One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensSeriesAOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Woodington Gardens Series A One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RichlandCountySCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Richland County, SC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RichlandCountySCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Richland County, SC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RichlandCountySCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Richland County, SC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfPartnersCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Partners' Capital [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJThreeMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series J-3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJThreeMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series J Three Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJThreeMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series J-3 mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SifmaMunicipalSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SIFMA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SifmaMunicipalSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SIFMA Municipal Swap Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHilltopAtSignalHillsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust Twenty Twenty one XF Two Thousand Nine Hundred And Twenty Six Hilltop at Signal Hills Property Loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHilltopAtSignalHillsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty one XF Two Thousand Nine Hundred And Twenty Six Hilltop at Signal Hills Property Loan[Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHilltopAtSignalHillsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2021-XF2926 - Hilltop at Signal Hills property loan [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Debt</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ValageSeniorLivingCarsonValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Valage Senior Living Carson Valley.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ValageSeniorLivingCarsonValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valage Senior Living Carson Valley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentsAndOtherGuaranteesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Other Guarantees [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentsAndOtherGuaranteesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Other Guarantees [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentsAndOtherGuaranteesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and other guarantees.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonyMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">40rty on Colony MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Valuation Allowance, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Valuation Allowance</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedMThirtyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed M Thirty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedMThirtyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed M thirty three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenSandyCreekTaxableLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty Four X F Three Thousand Two Hundred And Nineteen Sandy Creek Taxable Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenSandyCreekTaxableLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2024-XF3219 - Sandy Creek Taxable Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenSandyCreekTaxableLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2024-XF3219 - Sandy Creek Taxable Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIiGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove II GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIiGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove II GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIiGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove II GIL [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTransactionsBetweenBorrowersOfPartnershipsMortgageRevenueBondsAndAffiliatesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of transactions between borrowers of partnerships mortgage revenue bonds and affiliates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTransactionsBetweenBorrowersOfPartnershipsMortgageRevenueBondsAndAffiliatesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Transactions Between Borrowers Of Partnerships Mortgage Revenue Bonds And Affiliates Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTransactionsBetweenBorrowersOfPartnershipsMortgageRevenueBondsAndAffiliatesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Transactions Between Borrowers of Partnership's MRBs and Affiliates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentNumberOfExtensions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument number of extensions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentNumberOfExtensions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Number of Extensions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentNumberOfExtensions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument number of extensions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RedemptionOfMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redemption of mortgage revenue bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RedemptionOfMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Redemption of Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RedemptionOfMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Redemption of mortgage revenue bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWoodHollowMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at Wood Hollow [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWoodHollowMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Wood Hollow [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWoodHollowMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar at Wood Hollow.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable mortgage revenue bonds and taxable governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Mortgage Revenue Bonds and Taxable Governmental Issuer Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable MRBs and Taxable GILs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GermantownTNMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Germantown, TN [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GermantownTNMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Germantown T N [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GermantownTNMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Germantown, TN.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfVariableInterestEntitiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipCapitalAccountAdvancedFund_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Capital Account Advanced Fund</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipCapitalAccountAdvancedFund_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership capital account advanced fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesAMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesAMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateRedemptionFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal Outstanding at Date of Redemption</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateRedemptionFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans On Real Estate Redemption Face Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateRedemptionFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage loans on real estate, redemption, face amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateRedemptionFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal Outstanding at Date of Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VineyardGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vineyard Gardens</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VineyardGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vineyard Gardens [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VineyardGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vineyard Gardens.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ExtendedMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Extended maturity period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ExtendedMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Extended maturity period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHopeOnAvalonTaxableGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2926 - Hope on Avalon taxable GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHopeOnAvalonTaxableGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One XF Two Thousand Nine Hundred And Twenty Six Hope on Avalon taxable GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHopeOnAvalonTaxableGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one xf two thousand nine hundred and twenty six hope on avalon taxable gil.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReserveForCreditLossesOnUnfundedCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reserve for credit losses on unfunded commitments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReserveForCreditLossesOnUnfundedCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reserve for Credit Losses on Unfunded Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReserveForCreditLossesOnUnfundedCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reserve for credit losses on unfunded commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentVariableInterestRateTypeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Variable Interest Rate, Type [Extensible Enumeration]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ColumbiaGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Columbia Gardens [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ColumbiaGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Columbia Gardens [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ColumbiaGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Columbia gardens.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfTermsOfPartnershipTaxableMortgageRevenueBondsInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Terms Of Partnership Taxable Mortgage Revenue Bonds Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfTermsOfPartnershipTaxableMortgageRevenueBondsInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Terms Of Partnership Taxable Mortgage Revenue Bonds Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfTermsOfPartnershipTaxableMortgageRevenueBondsInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Terms of Partnership Taxable Mortgage Revenue Bonds Investments</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AffordableMultifamilyGovernmentalIssuerLoanInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Affordable multifamily governmental issuer loan investments segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnPriceRiskDerivativesNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Net result from derivative transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnPriceRiskDerivativesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net result from derivative transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnPriceRiskDerivativesNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net result from derivative transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnPriceRiskDerivativesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Price Risk Derivatives, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary Of Significant Accounting Policies [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Significant Accounting Policies [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of significant accounting policies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AdvancesOnGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Advances on governmental issuer loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AdvancesOnGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Advances on governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AdvancesOnGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advances On Governmental Issuer Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaturityOfConstructionLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturity of construction loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaturityOfConstructionLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maturity of Construction Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaturityOfConstructionLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maturity of construction loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sandy creek apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sandy Creek Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sandy Creek Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HarmonyCourtBakersfieldMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Harmony Court Bakersfield [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HarmonyCourtBakersfieldMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Harmony Court Bakersfield [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HarmonyCourtBakersfieldMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Harmony Court Bakersfield.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheIvyApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The ivy apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheIvyApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Ivy Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheIvyApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Ivy Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BUC holders' interest in net income (loss) per BUC, basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Repayments of Long-term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Principal payments on debt financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Long-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPropertyLoanRepaid_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Month and year of property loan repaid.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPropertyLoanRepaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Month And Year Of Property Loan Repaid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPropertyLoanRepaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Repaid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CashPaidInLieuOfFractionalBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash paid in lieu of fractional beneficial unit certificates.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CashPaidInLieuOfFractionalBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Paid In Lieu Of Fractional Beneficial Unit Certificates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CashPaidInLieuOfFractionalBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid in lieu of fractional BUCs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotes-SeriesA-OneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Agape Helotes - Series A-1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotes-SeriesA-OneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agape Helotes - Series A-One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotes-SeriesA-OneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agape Helotes - Series A-One.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Swap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Swap Liability (Reported within Other Liabilities) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonTaxableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hope on Avalon (Taxable) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonTaxableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hope on Avalon (taxable).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized gains (losses) on securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Unrealized Gain (Loss), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Unrealized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesUnrealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrealized losses on securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillagePropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2939 - Osprey Village Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillagePropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One Xf Two Thousand Nine Hundred And Thirty Nine Osprey Village Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillagePropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one xf two thousand nine hundred and thirty nine osprey village property loan .</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipRecognizedLoanFee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership recognized loan fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipRecognizedLoanFee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Recognized Loan Fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipRecognizedLoanFee_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership recognized loan fee.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_JacksonManorApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Jackson Manor Apartments [member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_JacksonManorApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Jackson Manor Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_JacksonManorApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Jackson manor apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_JacksonManorApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Jackson Manor Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net income to net cash provided by operating activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheSuitesOnPaseoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Suites on Paseo [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheSuitesOnPaseoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Suites On Paseo [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheSuitesOnPaseoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Suites on Paseo.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfGuaranteeObligationsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnership's Maximum Exposure Under Guaranty Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfGuaranteeObligationsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Guarantor Obligations [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateNumberOfLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateNumberOfLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Number of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Repurchase of Redeemable Preferred Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payment upon redemption of Redeemable Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfRedeemablePreferredStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment upon redemption of redeemable Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Allowance For Credit Losses [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RemainingPartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining partnership commitment fund amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RemainingPartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Remaining partnership's commitments amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RemainingPartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Remaining Partnership's Commitments Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RemainingPartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Remaining Commitment as of June 30, 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheSaffordMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Safford</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheSaffordMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Safford [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheSaffordMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Safford [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A-1 Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A-1 Preferred Units [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A-1 preferred units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_GA_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Buford, GA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_GA_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">GA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_GA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">GEORGIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuarantyAgreementRequiredPartnershipToMaintainNetWorthAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net worth to be maintained as per guaranty agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuarantyAgreementRequiredPartnershipToMaintainNetWorthAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Guaranty agreement required partnership to maintain net worth amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LexingtonSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lexington, South Carolina.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LexingtonSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lexington South Carolina [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LexingtonSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lexington, South Carolina [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LexingtonSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Lexington, SC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CCBASeniorGardenApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CCBA Senior Garden Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CCBASeniorGardenApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">C C B A Senior Garden Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CCBASeniorGardenApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">CCBA Senior Garden Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount, Year 4</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average Notional Amount, Year 4</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation Items</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsGovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Centennial Crossings GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsGovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Centennial Crossings Governmental Issuer Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsGovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Centennial Crossings Governmental Issuer Loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LeaseAgreementExtendedTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease agreement extend term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LeaseAgreementExtendedTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Agreement Extended Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LeaseAgreementExtendedTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease agreement extended term.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScharbauerFlatsApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Scharbauer Flats [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScharbauerFlatsApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scharbauer Flats Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScharbauerFlatsApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scharbauer Flats Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScharbauerFlatsApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Scharbauer flats apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PalmsAtPremierParkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Palms At Premier Park [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PalmsAtPremierParkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Palms at Premier Park.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PalmsAtPremierParkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Palms at Premier Park Apartment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average number of BUCs outstanding, basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Limited Partnership Units Outstanding, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIPoppyGroveIIAndPoppyGroveIIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove I Poppy Grove II and Poppy Grove III [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIPoppyGroveIIAndPoppyGroveIIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove I Poppy Grove II and Poppy Grove III.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIPoppyGroveIIAndPoppyGroveIIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove I, Poppy Grove II, And Poppy Grove III [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TierThreeDistributionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Tier 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TierThreeDistributionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tier 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TierThreeDistributionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tier Three Distribution [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TierThreeDistributionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tier three distribution.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NatchitochesLosAngelesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Natchitoches, Los Angeles [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NatchitochesLosAngelesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Natchitoches, Los Angeles.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NatchitochesLosAngelesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Natchitoches, Los Angeles [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MRB and Taxable MRB Commitments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bond And Taxable Mortgage Revenue Bond Commitments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bond and taxable mortgage revenue bond commitments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondInitialPrincipalAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable MRB, Initial Principal Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondInitialPrincipalAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Mortgage Revenue Bond - Initial Principal Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondInitialPrincipalAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable mortgage revenue bond - Initial principal acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondInitialPrincipalAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Taxable MRB, Initial Principal Funding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Partners' Capital, Including Portion Attributable to Noncontrolling Interest, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital, Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partners' capital account</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_KindredApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kindred Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_KindredApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kindred Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_KindredApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kindred Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncentiveDistributionDistributionPerYearIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Distribution of Tier 2 and Tier 3 (income) loss (Note 3)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncentiveDistributionDistributionPerYearIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incentive Distribution Distribution Per Year Income Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncentiveDistributionDistributionPerYearIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incentive distribution distribution per year income loss.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncentiveDistributionDistributionPerYearIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution of income (Note 22)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock, Value, Shares Issued Net of Tax Withholdings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockValueSharesIssuedNetOfTaxWithholdings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BUCs surrendered to pay tax withholding on vested restricted units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RemainingCommitmentsToEquityInvestmentMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum Remaining Equity Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RemainingCommitmentsToEquityInvestmentMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Remaining Commitments To Equity Investment Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RemainingCommitmentsToEquityInvestmentMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Remaining commitments to equity investment, maximum.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LegacyCommonsAtSignalHillsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Legacy commons at signal hills GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LegacyCommonsAtSignalHillsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legacy Commons at Signal Hills GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LegacyCommonsAtSignalHillsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legacy Commons GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheJessamAtHaysFarmsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Jessam At Hays Farms [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheJessamAtHaysFarmsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Jessam at Hays Farms [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheJessamAtHaysFarmsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Jessam at hays farms.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummerhillMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summerhill [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummerhillMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summerhill [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummerhillMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summerhill.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotesSeriesBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agape Helotes Series B [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotesSeriesBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agape helotes series B.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LimitedPartnerRestrictedAndUnrestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">BUCs - Restricted and Unrestricted [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LimitedPartnerRestrictedAndUnrestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BUCs - Restricted and Unrestricted [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LimitedPartnerRestrictedAndUnrestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Limited Partner Restricted And Unrestricted [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LimitedPartnerRestrictedAndUnrestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Limited partner restricted and unrestricted.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Unit Awards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MckinneyFallsTxMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">McKinney Falls, TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MckinneyFallsTxMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">McKinney Falls, TX.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond purchase commitment fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Bond purchase commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtViettiMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Park at Vietti.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtViettiMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Park at Vietti [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series P-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series P-T Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series P-T mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAndOtherSecuredFinancingNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages payable, net (Note 14)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAndOtherSecuredFinancingNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total mortgages payable and other secured financings, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAndOtherSecuredFinancingNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgages Payable And Other Secured Financing Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAndOtherSecuredFinancingNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgages payable and other secured financing, net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted Average Number Diluted Shares Outstanding Adjustment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dilutive BUCs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted, Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaintPaulMinnesotaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">St. Paul, MN [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaintPaulMinnesotaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Saint Paul Minnesota [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaintPaulMinnesotaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Saint Paul, Minnesota.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LongTermPurchaseCommitmentsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Purchase Commitments Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LongTermPurchaseCommitmentsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">long-term purchase commitments, fair value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LongTermPurchaseCommitmentsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bond purchase commitment, at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPaymentTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, payment terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentPaymentTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Payment Terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Lease, Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the Entrepreneur MRBs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at the Entrepreneur MRBs [ Member ]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur MRBs and Taxable MRB [ Member ]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Residency at the Entrepreneur MRBs [ Member ]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanGuaranteePercentageUponOccurrenceOfFraudBorrowerWillfulMisconductAndBankruptcy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Construction loan guarantee percentage upon occurrence of fraud, borrower willful misconduct and bankruptcy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanGuaranteePercentageUponOccurrenceOfFraudBorrowerWillfulMisconductAndBankruptcy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Construction Loan Guarantee Percentage Upon Occurrence Of Fraud Borrower Willful Misconduct And Bankruptcy</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanGuaranteePercentageUponOccurrenceOfFraudBorrowerWillfulMisconductAndBankruptcy_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Construction loan guarantee percentage upon occurrence of fraud borrower willful misconduct and bankruptcy.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForFirstExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Required percentage of principal payment for first extension</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForFirstExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Required Percentage of Principal Payment for First Extension</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForFirstExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Required percentage of principal payment for first extension.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SecuredLineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Line Of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SecuredLineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Secured lines of credit (Note 12)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SecuredLineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Secured line of credit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustPortfolioPhcftMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Public housing capital fund trusts [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustPortfolioPhcftMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Portfolio Phcft [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustPortfolioPhcftMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust Portfolio--PHCFT.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Significant Accounting Policies [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of Significant Accounting Policies [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear2_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear2_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, Weighted Average Fixed Interest Rate, Year 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by operating activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Operating Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireNotesReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amount paid to purchase including principal and accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireNotesReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Notes Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireNotesReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amount to paid for outstanding principal and interest on a note receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M24TebsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">M24 TEBS [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M24TebsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">M24 TEBS [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M24TebsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">M24 TEBS.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWoodHollowSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar At Wood Hollow Series A.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWoodHollowSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Wood Hollow Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWoodHollowSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at Wood Hollow - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SycamoreWalkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sycamore Walk [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SycamoreWalkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sycamore Walk [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SycamoreWalkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sycamore Walk</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingCodmProfitLossMeasureHowUsedDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPreferredUnitsIssuedOnMarchTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series B Preferred Units Issued On March Two Thousand Twenty Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPreferredUnitsIssuedOnMarchTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series Preferred Units Issued On March Two Thousand Twenty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesPreferredUnitsIssuedOnMarchTwoThousandTwentyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series B Preferred Units Issued On March 2025 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineOcotilloSpringsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust Twenty Twenty One X F Two Thousand Nine Hundred And Thirty Nine Ocotillo Springs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineOcotilloSpringsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One X F Two Thousand Nine Hundred And Thirty Nine Ocotillo Springs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineOcotilloSpringsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2021-XF2939 - Ocotillo Springs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanMaximumAvailableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum Balance Available on Construction Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanMaximumAvailableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maximum Balance Available on Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanMaximumAvailableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Construction Loan Maximum Available Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanMaximumAvailableAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Construction loan maximum available amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accumulated depreciation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankersTrustAcquisitionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bankers Trust Acquisition [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankersTrustAcquisitionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bankers Trust Acquisition [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankersTrustAcquisitionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bankers trust acquisition.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtUnamortizedDeferredFinancingCostsAndPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Unamortized Deferred Financing Costs And Premium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtUnamortizedDeferredFinancingCostsAndPremium_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Unamortized deferred financing costs and debt premium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtUnamortizedDeferredFinancingCostsAndPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt unamortized deferred financing costs and premium.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HollywoodCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hollywood, CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HollywoodCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hollywood, CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HollywoodCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hollywood, CA.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt premium amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Discount (Premium)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Schedule of Available-for-sale Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Available For Sale Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FourVantagePropertiesAndOneFreestonePropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Four Vantage Properties and One Freestone Property [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FourVantagePropertiesAndOneFreestonePropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Four vantage properties and one freestone property.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FourVantagePropertiesAndOneFreestonePropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Four Vantage Properties and One Freestone Property [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Held To Maturity Securities Provision For Loan Losses Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Held to maturity securities provision for loan losses expenses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpenses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Secured Borrowings, Gross Including Not Subject to Master Netting Arrangement, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredBorrowingsGrossIncludingNotSubjectToMasterNettingArrangement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Borrower</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Period End Rates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Period End Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Effective net interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:role="http://fasb.org/us-gaap/role/label/axisDefault">Portion at Fair Value Measurement [Member] [Default]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Disclosure Item Amounts [Default]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Portion at Fair Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SantaFeApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Santa Fe Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SantaFeApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Santa Fe Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SantaFeApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Santa Fe apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity, Carrying Amount, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Redeemable preferred stock units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityCarryingAmountAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable Preferred Units, $97.5 million and $77.5 million redemption value, 9.8 million and 7.8 million issued and outstanding, respectively (Note 17)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental disclosure of cash flow information:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfLandHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale, Land, Held-for-Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfLandHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of land held for development</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Name of Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Name of Property [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EarningsOrLossesFromInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">(Earnings) losses from investments in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EarningsOrLossesFromInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Or Losses From Investments In Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EarningsOrLossesFromInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Earnings or losses from investments in unconsolidated entities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AllowanceForCreditLossOnFinancingReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Changes in Partnership's Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AllowanceForCreditLossOnFinancingReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Credit Loss On Financing Receivables [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AllowanceForCreditLossOnFinancingReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance for credit loss on financing receivables.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MinimumConsolidatedTangibleNetWorth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum consolidated tangible net worth</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MinimumConsolidatedTangibleNetWorth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Consolidated Tangible Net Worth</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MinimumConsolidatedTangibleNetWorth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum consolidated tangible net worth.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MinimumLiquidity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum liquidity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MinimumLiquidity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Liquidity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MinimumLiquidity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum liquidity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Balance Sheet Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position Location, Balance [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CourtyardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Courtyard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CourtyardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Courtyard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CourtyardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Courtyard.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsSeriesATMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ocotillo Springs - Series A-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsSeriesATMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ocotillo Springs Series A-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsSeriesATMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ocotillo springs series A-T.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating lease right-of-use assets, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseRightOfUseAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Right-of-Use Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedAcquisitionMonthYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedAcquisitionMonthYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned Acquisition Month Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedAcquisitionMonthYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment owned, acquisition month year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GuaranteeObligationsCurrentCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guarantor Obligations, Current Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GuaranteeObligationsCurrentCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reported value of credit guaranties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLendingJVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Construction Lending JV [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLendingJVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Construction lending jv.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLendingJVMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Construction Lending JV [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillagePointMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Village Point [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillagePointMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Village Point [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillagePointMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Village point.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Advances on mortgage revenue bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental Issuer Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bond [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bond.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Willow Place Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Willow Place Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Willow Place Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanAndRemainingFundingCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loan and remaining funding commitment year and month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanAndRemainingFundingCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loan And Remaining Funding Commitment Year And Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanAndRemainingFundingCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable GIL, Month Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensHoldCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greens Hold Co [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensHoldCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greens Hold Co [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensHoldCoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greens Hold Co.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHelotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage at Helotes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHelotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage at Helotes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHelotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Helotes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateAcquisitionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of MRB Acquisitions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateAcquisitionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bonds On Real Estate Acquisitions Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateAcquisitionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bonds on real estate, acquisitions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable Governmental Issuer Loans (Reported Within Other Assets) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Taxable GILs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtSondrioSeriesTwoThousandTwentyTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The park at sondrio - series two thousand twenty two a.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtSondrioSeriesTwoThousandTwentyTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Park At Sondrio - Series Two Thousand Twenty Two A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtSondrioSeriesTwoThousandTwentyTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Park at Sondrio - Series 2022A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedIncomeSecuritiesTermTOBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed - Term TOB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedIncomeSecuritiesTermTOBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Income Securities Term T O B [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedIncomeSecuritiesTermTOBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed income securities term TOB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line Of Credit Facility [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DistributionMadeToLimitedPartnerDistributionsPaidPerUnit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributions paid or accrued per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DistributionMadeToLimitedPartnerDistributionsPaidPerUnit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Distribution Made to Limited Partner, Distributions Paid, Per Unit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsAndResidencyAtMayerMrbsAndResidencyAtTheEntrepreneurMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At The Entrepreneur Mrbs and Residency At Mayer Mrbs and Residency At The Entrepreneur Mrbs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsAndResidencyAtMayerMrbsAndResidencyAtTheEntrepreneurMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency At The Entrepreneur Mrbs and Residency At Mayer Mrbs and Residency At The Entrepreneur Mrbs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsAndResidencyAtMayerMrbsAndResidencyAtTheEntrepreneurMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur MRBs and Residency at Mayer MRBs and Residency at the Entrepreneur MRBs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments, Debt and Equity Securities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCopperfieldSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar At Copperfield Series A.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCopperfieldSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Copperfield Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCopperfieldSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at Copperfield - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrimeRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Prime Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveGILsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove GILs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveGILsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove GILs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveGILsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove GILs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtMaderaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Village at Madera [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtMaderaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Village At Madera [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtMaderaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Village at Madera.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtAvalonMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Village at Avalon MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtAvalonMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Village At Avalon MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtAvalonMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Village At Avalon MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RecourseStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Recourse Status [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Excluding Exchange Rate Effect, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net increase (decrease) in cash, cash equivalents and restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaHeightsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Magnolia Heights GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaHeightsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Magnolia heights GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaHeightsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Magnolia Heights GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments in Unconsolidated Entities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Income, Operating, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total gain (losses) included in other comprehensive (loss) income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandAndLandImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Land and Land Improvements, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandAndLandImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Land and Land Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandAndLandImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land and improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandAndLandImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Land and Land Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased and Retired During Period, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedAndRetiredDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Restricted units forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensPropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greens Property [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensPropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greens Property [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensPropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greens property.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Activity Related to Level 3 Assets and Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Assets Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value assets liabilities measured on recurring basis unobservable input reconciliation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupClassificationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Classification [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtFairOaksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage at Fair Oaks [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtFairOaksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage at Fair Oaks [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtFairOaksMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Fair Oaks.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bond Purchase Commitment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond purchase commitment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AnaheimAndWalnutMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Anaheim &amp; Walnut [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AnaheimAndWalnutMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Anaheim And Walnut [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AnaheimAndWalnutMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Anaheim &amp; Walnut.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Credit Quality Indicator [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RepaymentsOfSecuredLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Principal payments on secured lines of credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RepaymentsOfSecuredLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Secured Lines of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RepaymentsOfSecuredLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repayments of secured lines of credit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesATMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesATMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A T Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesATMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A-T mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-sale, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable mortgage revenue bonds, at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Mortgage revenue bonds, at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Mayer [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at the Mayer [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the Mayer.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredGainOnSaleOfProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Gain on Sale of Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredGainOnSaleOfProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred gain on sale of MF Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Allowance for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Allowance for credit losses (Note 10)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans, allowance for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans, Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneSelectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greystone Select [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneSelectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greystone Select [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneSelectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greystone Select.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForThirdExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Required percentage of principal payment for third extension</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForThirdExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Required Percentage of Principal Payment for Third Extension</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForThirdExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Required percentage of principal payment for third extension.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total capital contributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountContributions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Contributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtTomballMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Tomball [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtTomballMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Tomball [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtTomballMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Tomball.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMagnoliaHeightsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one xf two thousand nine hundred and fifty three magnolia heights property loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMagnoliaHeightsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One XF Two Thousand Nine Hundred And Fifty Three Magnolia Heights Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMagnoliaHeightsPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2953 - Magnolia Heights property loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DeferredFinancingCostsFinancedThroughAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred financing costs financed through accounts payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DeferredFinancingCostsFinancedThroughAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Financing Costs Financed Through Accounts Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DeferredFinancingCostsFinancedThroughAccountsPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred financing costs financed through accounts payable.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Asset-Specific Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loan Receivable, Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loan receivable, allowance for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Construction loan guarantee percentage upon achievement of a specified debt service coverage ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GuaranteeObligationsLiquidationProceedsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guarantor Obligations, Liquidation Proceeds, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationEliminationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation, Eliminations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationEliminationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation, Eliminations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TEBSResidualFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">TEBS Residual Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TEBSResidualFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">TEBS Residual Financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases and advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable Governmental Issuer Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AffordableMultifamilyMortgageRevenueBondAndGovernmentalIssuerLoanInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Affordable Multifamily Mortgage Revenue Bond and Governmental Issuer Loan Investments Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AffordableMultifamilyMortgageRevenueBondAndGovernmentalIssuerLoanInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Affordable multifamily mortgage revenue bond and governmental issuer loan investments segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AffordableMultifamilyMortgageRevenueBondAndGovernmentalIssuerLoanInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Affordable Multifamily Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Summary of Terms of Interest Rate Swap Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Derivative Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnership's Interest Rate Derivative Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimate of Fair Value, Fair Value Disclosure [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimate of Fair Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BorrowerReAllocatedPreviouslyProvidedFunding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Borrower re-allocated previously provided funding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BorrowerReAllocatedPreviouslyProvidedFunding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Borrower Re-Allocated Previously Provided Funding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BorrowerReAllocatedPreviouslyProvidedFunding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Borrower re-allocated previously provided funding.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TOBTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">TOB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TOBTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TOB Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TOBTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">T O B Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TOBTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">TOB Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentPercentageOfFacilityFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentPercentageOfFacilityFees_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Facility Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentPercentageOfFacilityFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Spread/ Facility Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentPercentageOfFacilityFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument percentage of facility fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notional value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAAndTwoThousandTwentyTwoBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Live nine two nine series two thousand twenty two A And two thousand twenty two B.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAAndTwoThousandTwentyTwoBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Live Nine Two Nine Series Two Thousand Twenty Two A And Two Thousand Twenty Two B [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAAndTwoThousandTwentyTwoBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Live 929 Series 2022A &amp; 2022B [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaryaliceCircleApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maryalice Circle Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaryaliceCircleApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maryalice circle apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaryaliceCircleApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MaryAlice Circle Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage Revenue Bonds Held In Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bonds Held In Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bonds held in trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OmahaNebraskaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Omaha, NE [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OmahaNebraskaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Omaha, NE [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OmahaNebraskaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Omaha Nebraska [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OmahaNebraskaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Omaha, Nebraska.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DistributionTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DistributionTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Distribution Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_CA_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_CA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CALIFORNIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondRedeemedPercentageOfParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bond, Redeemed Percentage of Par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondRedeemedPercentageOfParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bond, redeemed percentage of par value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondRedeemedPercentageOfParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemed percentage of par value plus accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Schedule of Available-for-sale Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value By Balance Sheet Grouping [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByBalanceSheetGroupingTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, by Balance Sheet Grouping [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RosewoodTownhomesSeriesATOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rosewood Townhomes - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RosewoodTownhomesSeriesATOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Rosewood Townhomes Series A T O B Trusts Securitization [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RosewoodTownhomesSeriesATOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Rosewood Townhomes Series A TOB Trusts Securitization.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Affordable Multifamily MRB Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Affordable Multifamily Mortgage Revenue Bond Investments Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AffordableMultifamilyMortgageRevenueBondInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Affordable multifamily mortgage revenue bond investments segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ColumbiaSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Columbia, South Carolina.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ColumbiaSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Columbia South Carolina [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ColumbiaSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Columbia South Carolina</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ColumbiaSouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Columbia, SC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentsAndOtherGuaranteesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments And Other Guarantees [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentsAndOtherGuaranteesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments And Other Guarantees [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentsAndOtherGuaranteesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitments and other guarantees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Unamortized deferred financing costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NatchitochesThomasApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Natchitoches Thomas Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NatchitochesThomasApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Natchitoches Thomas Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NatchitochesThomasApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Natchitoches Thomas Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CopperGateApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Copper Gate Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CopperGateApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Copper Gate Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CopperGateApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Copper Gate Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CopperGateApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Copper Gate Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueRecurringBasisUnobservableInputReconciliationNetDerivativeAssetLiabilityGainLossStatementOfIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Net Derivative Asset (Liability), Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contingent Interest Income [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Contingent interest income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contingent Interest Income [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CapitalUnitsRestrictedAndUnrestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of BUCs - Restricted and Unrestricted [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CapitalUnitsRestrictedAndUnrestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Units Restricted And Unrestricted [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CapitalUnitsRestrictedAndUnrestrictedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital units restricted and unrestricted.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility, Lender</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLenderDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Lender [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedRedemptionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedRedemptionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned Redemption Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedRedemptionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment owned, redemption month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedRedemptionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investment owned, redemption month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Property Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loans.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnerCapitalComponentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partner Capital Components [Domain]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Carrying Value</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TemporaryEquityRedeemablePreferredUnitsRedemptionValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Temporary equity redeemable preferred units redemption value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Internal Credit Assessment [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at empire bb-one.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalAfterYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt financing provided through the securitization of tax-exempt mortgage revenue bonds maturing after the fifth year following the latest fiscal year.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisUnrealizedGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis unrealized gain (loss) included in earnings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisUnrealizedGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total amount of gains (losses) for the period included in earnings attributable to the change in unrealized losses relating to assets or liabilities held</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_LA_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LA [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteesExpirationMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Guarantees expiration month and year.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnBroadwayGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hope on Broadway GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnBroadwayGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hope on Broadway GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnBroadwayGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hope on Broadway GIL [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Freestone Cresta Bella.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FirstMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThePalmsAtPremierParkApartmentsMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Palms At Premier Park Apartments MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThePalmsAtPremierParkApartmentsMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Palms at Premier Park Apartments MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThePalmsAtPremierParkApartmentsMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">The Palms at Premier Park Apartments MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsSupplementalGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2021-XF2953 - Willow Place Apartments Supplemental GIL</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsSupplementalGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2021-XF2953 - Willow Place Apartments Supplemental GIL</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptLoanMaturityPeriods_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax-exempt loan maturity period.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneAtGreeleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Freestone at Greeley [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneAtGreeleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Freestone at greeley.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WA_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">WA [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MD_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MD [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNinteenSandyCreekTaxableLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust Twenty Twenty Four XF Three Thousand Two Hundred And Ninteen Sandy Creek Taxable Loan.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOCI Attributable to Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsAndTaxableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur MRBs and Taxable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsAndTaxableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at the Entrepreneur MRBs and Taxable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurMrbsAndTaxableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the entrepreneur MRBs and taxable.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansCurrentInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansCurrentInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans Current Interest Rate Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansCurrentInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans current interest rate percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipInvestmentAcquisitionMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Investment Acquisition Month And Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipInvestmentAcquisitionMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership investment, acquisition month and year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipInvestmentAcquisitionMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Rate Derivatives, at Fair Value, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Derivatives, at Fair Value, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of derivative instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivative instruments at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929ApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Live 929 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929ApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Live 929 Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929ApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Live929 Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929ApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Live 929 Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontevistaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Montevista [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontevistaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Montevista [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontevistaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Montevista.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnsecuredDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured Lines of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnsecuredDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unsecured Debt [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheCenturionFoundationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Centurion Foundation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheCenturionFoundationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Centurion Foundation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheCenturionFoundationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Centurion Foundation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FourtyOnColonyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">40rty On Colony [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FourtyOnColonyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fourty on Colony [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FourtyOnColonyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fourty on Colony.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Live929.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Live 929 Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Live 929 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfLossContingencyRangeOfPossibleLossMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of loss contingency, range of possible loss, maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfLossContingencyRangeOfPossibleLossMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Loss Contingency Range Of Possible Loss Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfLossContingencyRangeOfPossibleLossMaximum_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The estimated maximum percentage of possible loss from the contingency.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsSeriesA2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Woodington Gardens Apartments Series A 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsSeriesA2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Woodington Gardens Apartments - Series A-2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsSeriesA2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Woodington gardens apartments - series A-2.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 4</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, Weighted Average Fixed Interest Rate, Year 4</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear4_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative, Fair Value Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Subject to Master Netting Arrangement, before Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInFiscalYearBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss) from Real Estate Investment Partnership, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) from Real Estate Investment Partnership</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Maturities Repayments Of Principal In Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt financing provided through the securitization of tax-exempt mortgage revenue bonds maturing in the fourth fiscal year following the latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Live 929 Series 2022A MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Live Nine Two Nine Series Two Thousand Twenty Two A Mrb [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Live Nine Two Nine Series Two Thousand Twenty Two A Mrb.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CompanionAtThornHillApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Companion at Thornhill Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CompanionAtThornHillApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Companion At Thorn Hill Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CompanionAtThornHillApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Companion at thorn hill apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnership's Investments in Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental Issuer Loans [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Woodington Gardens Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Woodington Gardens Apartments MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Woodington Gardens Apartments MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentMortgagePlacementFeesEarned_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment/mortgage placement fees earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentMortgagePlacementFeesEarned_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Mortgage Placement Fees Earned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentMortgagePlacementFeesEarned_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment/mortgage placement fees earned.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtConroeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Conroe [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtConroeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Conroe [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtConroeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at conroe.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Partners' Capital, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Partners' Capital, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Partners&#700; Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partners capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DistributionsDeclaredButNotPaidForBeneficialUnitCertificatesAndGeneralPartner_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributions declared but not paid for BUCs and General Partner</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DistributionsDeclaredButNotPaidForBeneficialUnitCertificatesAndGeneralPartner_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Distributions Declared But Not Paid For Beneficial Unit Certificates And General Partner</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DistributionsDeclaredButNotPaidForBeneficialUnitCertificatesAndGeneralPartner_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Distributions declared but not paid for beneficial unit certificates and general partner.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NonperformingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Nonperforming.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NonperformingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonperforming [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NonperformingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nonperforming [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Inputs, Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Initial Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership's commitments amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Committed to funding amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipsCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnershipAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net gain (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnershipAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net gain (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnershipAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss) from Real Estate Investment Partnership, Attributable to Parent, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnershipAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) from Real Estate Investment Partnership, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossFromRealEstateInvestmentPartnershipAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_The5050StudentHousingUNLMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The 50/50 Student Housing--UNL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_The5050StudentHousingUNLMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The5050 Student Housing U N L [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_The5050StudentHousingUNLMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The 50/50 Student Housing--UNL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_The5050StudentHousingUNLMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">The 50/50 MF Property [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedMFortyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed - M45 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedMFortyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed M Forty Five [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedMFortyFiveMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable - M45.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandovalFlatsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sandoval Flats [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandovalFlatsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sandoval flats.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandovalFlatsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sandoval Flats [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfBedsInRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of beds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfBedsInRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Beds in Real Estate Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfBedsInRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of beds in real estate property.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtOConnorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At O'Connor [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtOConnorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At O Connor [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtOConnorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at O'Connor.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoAndBarclaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mizuho and Barclays [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoAndBarclaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mizuho And Barclays Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoAndBarclaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mizuho and barclays member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Maturities Repayments Of Principal In Year Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt financing provided through the securitization of tax=exempt mortgage revenue bonds maturing in the fifth fiscal year following the latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Assets and Liabilities Measured at Fair Value on Recurring Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsMiscellaneous_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Assets, Miscellaneous, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsMiscellaneous_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsMiscellaneous_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets, Miscellaneous</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CapitalProvidedForJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital provided for joint venture.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CapitalProvidedForJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital Provided For Joint Venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CapitalProvidedForJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital provided for joint venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CapitalProvidedForJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Capital provided for joint venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneManagerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greystone Manager [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneManagerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greystone Manager [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneManagerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greystone Manager.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CrossingAtOneThousandFourHundredFifteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Crossing at 1415 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CrossingAtOneThousandFourHundredFifteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Crossing At One Thousand Four Hundred Fifteen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CrossingAtOneThousandFourHundredFifteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Crossing at 1415.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bond Purchase Commitment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond Purchase Commitment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfLoansOnNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of loans on nonaccrual status.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfLoansOnNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Loans on Nonaccrual Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfLoansOnNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of loans on nonaccrual status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlaceGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one xf two thousand nine hundred and fifty three willow place gil.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlaceGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One XF Two Thousand Nine Hundred And Fifty Three Willow Place G I L [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlaceGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2953 - Willow Place GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnership's Property Loans, Net of Allowances for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CumulativeEffectOfAccountingChange_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cumulative effect of accounting change.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CumulativeEffectOfAccountingChange_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect Of Accounting Change</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CumulativeEffectOfAccountingChange_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative effect of accounting change (Note 2)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPropertyLoanRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPropertyLoanRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Month and Year of Property Loan Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MonthAndYearOfPropertyLoanRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Month and year of property loan redeemed.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accounts Payable, Accrued Expenses and Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable, accrued expenses and other liabilities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable and Accrued Liabilities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Restricted Cash and Cash Equivalents, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash and Cash Equivalent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Liability Payments Due After Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee operating lease liability payments due after year four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HuntsvilleALMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Huntsville AL .</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HuntsvilleALMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Huntsville A L [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HuntsvilleALMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Huntsville, AL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies (Note 16)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConsolidatedStatementsOfComprehensiveIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Statements Of Comprehensive Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConsolidatedStatementsOfComprehensiveIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Consolidated Statements of Comprehensive Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtCoventryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Coventry [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtCoventryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Coventry [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtCoventryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Coventry [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and Administrative Expenses [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpenseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Operating Lease, Liability, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total operating lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Variable interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Index Based Rates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument variable rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forecast [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioForecastMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Scenario Forecast [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForSecondExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Required percentage of principal payment for second extension</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForSecondExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Required Percentage of Principal Payment for Second Extension</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredPercentageOfPrincipalPaymentForSecondExtension_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Required percentage of principal payment for Second extension.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BasisOfPresentationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Basis Of Presentation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BasisOfPresentationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Basis of Presentation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanDiegoCaliforniaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">San Diego, CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanDiegoCaliforniaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">San Diego California [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanDiegoCaliforniaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">San Diego, California.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LesseeOperatingLeaseMinimumAnnualPaymentDue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessee operating lease minimum annual payment due.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LesseeOperatingLeaseMinimumAnnualPaymentDue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum annual payments due under lease agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LesseeOperatingLeaseMinimumAnnualPaymentDue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Operating Lease Minimum Annual Payment Due</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Maturities Repayments Of Principal In Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt financing provided through the securitization of tax-exempt mortgage revenue bonds maturing in the third fiscal year following the latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LegacyCommonsMagnoliaOsperyVillageWillowPalaceApartmentsAndSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legacy Commons, Magnolia, Ospery Village, Willow Palace Apartments And Supplemental [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LegacyCommonsMagnoliaOsperyVillageWillowPalaceApartmentsAndSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Legacy Commons, Magnolia, Ospery Village, Willow Palace Apartments And Supplemental.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Derivative Instruments, Net, Pretax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gain (Loss) on Derivative Instruments, Net, Pretax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net result from derivative transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDerivativeInstrumentsNetPretax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Net result from derivative transactions (Note 15)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromIssuanceOfRedeemablePreferredUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Issuance Of Redeemable Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromIssuanceOfRedeemablePreferredUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from issuance of redeemable preferred units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromIssuanceOfRedeemablePreferredUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds upon issuance of redeemable Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNoncurrentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Issuance Costs, Noncurrent, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNoncurrentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Deferred financings costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNoncurrentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred financing costs, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNoncurrentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Noncurrent, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AcquisitionOfAndAdvancesOnTaxableMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Acquisition of and Advances on Taxable Mortgage Revenue Bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AcquisitionOfAndAdvancesOnTaxableMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Acquisition of and advances on taxable mortgage revenue bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AcquisitionOfAndAdvancesOnTaxableMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Advances on taxable mortgage revenue bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Interest Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityPrimaryBeneficiaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity, Primary Beneficiary [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainsLossesRealizedUnrealizedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">None.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainsLossesRealizedUnrealizedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gains Losses Realized Unrealized [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainsLossesRealizedUnrealizedAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total gains (losses) (realized/unrealized) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnitsTreasuryUnitsReissued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of BUCs, net of issuance costs, Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnitsTreasuryUnitsReissued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Units, Treasury Units Reissued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable governmental issuer loan held in trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loan Held In Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoanHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loan held in trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929ApartmentsSeries2022BMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Live 929 apartments series 2022B.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929ApartmentsSeries2022BMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Live 929 Apartments Series 2022B [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Live929ApartmentsSeries2022BMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Live 929 Apartments - Series 2022B [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessee Lease Description [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Lease, Description [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Originated, More than Five Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedFiveOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Income (Expense), Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income (Expense), Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, before Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCollateralForBorrowedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash collateral</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCollateralForBorrowedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Collateral for Borrowed Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SuitesOnPaseoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Suites on paseo.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SuitesOnPaseoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Suites On Paseo [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SuitesOnPaseoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Suites on Paseo [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtLovelandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage at Loveland [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtLovelandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage at Loveland [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtLovelandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Loveland.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPartnershipSoldNetIncomeRelatedToMfPropertyTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Partnership Sold Net Income Related to Mf Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPartnershipSoldNetIncomeRelatedToMfPropertyTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Partnership Sold Net Income Related to Mf Property [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPartnershipSoldNetIncomeRelatedToMfPropertyTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of partnership sold net income related to Mf property.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mizuho [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mizuho Member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mizuho.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Financing Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan financing interest rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementScenarioAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt financing, net (Note 13)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">TOB Trust Financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total debt financing, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt financing liabilities net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt financing, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentOfSpecialAllocations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percent of special allocations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentOfSpecialAllocations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percent Of Special Allocations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentOfSpecialAllocations_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percent of special allocations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtBulverdeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Bulverde [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtBulverdeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Bulverde [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtBulverdeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Bulverde.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsIncludingBondsHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsIncludingBondsHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bonds Including Bonds Held In Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsIncludingBondsHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bonds including bonds held in trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2024-XF3219 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty Four X F Three Thousand Two Hundred And Nineteen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2024-XF3219.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NetIncomeLossAttributableToCommonStockholdersAndNoncontrollingInterestBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income Loss Attributable To Common Stockholders And Noncontrolling Interest Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NetIncomeLossAttributableToCommonStockholdersAndNoncontrollingInterestBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of Net Income (Loss) attributable to common stockholders noncontrolling interest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NetIncomeLossAttributableToCommonStockholdersAndNoncontrollingInterestBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income allocable to Partners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NetIncomeLossAttributableToCommonStockholdersAndNoncontrollingInterestBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income allocable to Partners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NetIncomeLossAttributableToCommonStockholdersAndNoncontrollingInterestBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net income (loss) available to Partners and noncontrolling interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NonPartnershipAdministrativeFeeReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-partnership property administrative fee received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NonPartnershipAdministrativeFeeReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Partnership Administrative Fee Received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NonPartnershipAdministrativeFeeReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non-partnership administrative fee received.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Mortgages payable, net (Note 14)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgages Payable, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgages payable, net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingExpenseInformationUsedByCodmDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting, Expense Information Used by CODM, Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingExpenseInformationUsedByCodmDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment reporting, expense information used by CODM, description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Governmental issuer loans held in trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans held in trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Governmental issuer loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental issuer loans (Note 5)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingTaxExemptInterestOnSeniorSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt financing tax-exempt Interest on Senior Securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingTaxExemptInterestOnSeniorSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Tax-Exempt Interest on Senior Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingTaxExemptInterestOnSeniorSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax-Exempt Interest on Senior Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementBusinessSegmentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segments [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRemarketingSeniorSecuritiesRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument remarketing senior securities rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRemarketingSeniorSecuritiesRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Remarketing Senior Securities Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRemarketingSeniorSecuritiesRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remarketing Senior Securities Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ElkGroveCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Elk Grove, CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ElkGroveCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Elk Grove, CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ElkGroveCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Elk Grove, CA.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Ocotillo Springs - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ocotillo Springs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ocotillo Springs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ocotillo Springs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LeaseAgreementAnnualRenewableIncreasePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease agreement annual renewable increase percentage after July 31, 2034</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LeaseAgreementAnnualRenewableIncreasePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Agreement Annual Renewable Increase Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LeaseAgreementAnnualRenewableIncreasePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease agreement annual renewable increase percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateByLoanDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateByLoanDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series J-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series J T Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series J-T mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agape Helotes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agape Helotes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgages payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Outstanding Mortgage Payable, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Received proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transactions with Related Parties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transactions Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HarmonyTerraceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Harmony Terrace [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HarmonyTerraceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Harmony Terrace [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HarmonyTerraceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Harmony Terrace</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Partners' Capital Account, Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Partners' Capital Account, Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partners capital account redemptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest Rate Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable / Fixed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateTerms_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate Terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_IN_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">IN [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_IN_lbl" xlink:role="http://www.xbrl.org/2003/role/label">INDIANA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfTaxableGovernmentalIssuerLoanToJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of taxable governmental issuer loan to Construction Lending JV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfTaxableGovernmentalIssuerLoanToJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Taxable Governmental Issuer Loan To Joint Venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfTaxableGovernmentalIssuerLoanToJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sale of taxable governmental issuer loan to joint venture.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfVariableInterestEntitiesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Assets and Liabilities of the Partnership Consolidated VIE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfVariableInterestEntitiesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Variable Interest Entities [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfNetLossExclusiveOfGainsOnSaleOfMfPropertyTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Net Income Exclusive of Gains on Sale of MF Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfNetLossExclusiveOfGainsOnSaleOfMfPropertyTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of net loss, exclusive of gains on sale of MF property.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfNetLossExclusiveOfGainsOnSaleOfMfPropertyTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Net Loss Exclusive of Gains on Sale of MF Property [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfGovernmentalIssuerLoanToJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of governmental issuer loan to Construction Lending JV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfGovernmentalIssuerLoanToJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Governmental Issuer Loan To Joint Venture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfGovernmentalIssuerLoanToJointVenture_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sale of governmental issuer loan to joint venture.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentOfRegularAllocations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percent of regular allocations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentOfRegularAllocations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percent Of Regular Allocations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentOfRegularAllocations_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percent of regular allocations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfReferralFeeToBeReceivedInOriginalPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of referral fee to be received in original principal amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfReferralFeeToBeReceivedInOriginalPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Referral Fee To Be Received In Original Principal Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfReferralFeeToBeReceivedInOriginalPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of referral fee to be received in original principal amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Seniors and Skilled Nursing Mortgage Revenue Bond Investments Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Seniors and skilled nursing mortgage revenue bond investments segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Seniors and Skilled Nursing Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnerCapitalComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partner Capital Components</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnerCapitalComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partner Capital Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineApartmentsSeriesTwoThousandFourteenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Live 929 Apartments - Series 2014 A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineApartmentsSeriesTwoThousandFourteenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Live Nine Two Nine Apartments Series Two Thousand Fourteen A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LiveNineTwoNineApartmentsSeriesTwoThousandFourteenAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Live nine two nine apartments series two thousand fourteen A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series BB-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series BB-T Mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series BB-T Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments in unconsolidated entities (Note 7)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralPartnersCapitalAccount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">General Partners' Capital Account, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralPartnersCapitalAccount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General Partner (Note 1)</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2021-XF2953 - Poppy Grove I GIL</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Loans Net Of Loan Loss Allowance [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loans Net Of Loan Loss Allowance [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loans, net of loan loss allowance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loans Net Of Loan Loss Allowance [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loans, net of loan loss allowance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear8_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average notional amount year 8.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear8_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount Year 8</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear8_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2033</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountDistributionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distributions paid or accrued:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountDistributionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Distributions [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntityMaximumLossExposureFundingCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable interest entity, maximum loss exposure, funding commitments, amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntityMaximumLossExposureFundingCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity, Maximum Loss Exposure, Funding Commitments, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntityMaximumLossExposureFundingCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum exposure to loss, funding commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSalesInformationOfPartnershipInvestmentInUnconsolidatedEntitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Sales Information of Partnership Investment in Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSalesInformationOfPartnershipInvestmentInUnconsolidatedEntitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Sales Information of Partnership Investment in Unconsolidated Entities [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSalesInformationOfPartnershipInvestmentInUnconsolidatedEntitiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of sales information of partnership investment in unconsolidated entities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfIssuancePartnershipRedeemablePreferredUnitsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Issuance Partnership Redeemable Preferred Units Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfIssuancePartnershipRedeemablePreferredUnitsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Issuance partnership redeemable preferred units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfIssuancePartnershipRedeemablePreferredUnitsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Issuances of Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InitialLeaseTermExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial lease term expiration period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InitialLeaseTermExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Initial Lease Term Expiration Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InitialLeaseTermExpirationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Initial lease term expiration period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear7_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average notional amount year 7.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear7_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount Year 7</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear7_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2032</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AssetsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AssetsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AssetsPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Assets percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbFourMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series BB Four Mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbFourMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series BB Four Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBbFourMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series BB-4 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorAcquisitionFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior Acquisition Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorAcquisitionFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Senior Acquisition Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorAcquisitionFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Senior acquisition financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredRatingForTaxExemptedInvestmentsOtherThanMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Required rating for tax exempted investments other than mortgage revenue bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredRatingForTaxExemptedInvestmentsOtherThanMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Required Rating For Tax Exempted Investments Other Than Mortgage Revenue Bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RequiredRatingForTaxExemptedInvestmentsOtherThanMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Required rating for tax exempted investments other than mortgage revenue bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfRealEstateOwnershipInterestPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale of real estate ownership interest percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfRealEstateOwnershipInterestPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Real Estate Ownership Interest Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfRealEstateOwnershipInterestPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership interest sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfLineOfCreditFacilitiesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Lines of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfLineOfCreditFacilitiesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Line of Credit Facilities [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromCollectionOfNotesReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromCollectionOfNotesReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Collection of Notes Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_YearOfGuaranteeAgreementTermEnding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loan purchase agreement expiry year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_YearOfGuaranteeAgreementTermEnding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">End of Guaranty Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_YearOfGuaranteeAgreementTermEnding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Year Of Guarantee Agreement Term Ending</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_YearOfGuaranteeAgreementTermEnding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Year Of Guarantee Agreement Term Ending .</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at empire bb-three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At Empire Bb-Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at Empire - Series BB-3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OpportunitySouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Opportunity South Carolina [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OpportunitySouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Opportunity south carolina.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OpportunitySouthCarolinaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Opportunity South Carolina [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PrincipalPaymentsReceivedOnMortgageRevenueBondsAndContingentInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Principal Payments Received On Mortgage Revenue Bonds And Contingent Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PrincipalPaymentsReceivedOnMortgageRevenueBondsAndContingentInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Principal payments received on mortgage revenue bonds and contingent interest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PrincipalPaymentsReceivedOnMortgageRevenueBondsAndContingentInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal payments received on mortgage revenue bonds and contingent interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionsByRelatedPartyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingFloorInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Floor interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingFloorInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Financing Floor Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingFloorInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan financing floor interest rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtPowdersvilleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Powdersville [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtPowdersvilleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Powdersville [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtPowdersvilleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Powdersville</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year One, Originated, Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove I GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove I GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove I GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Summary of Debt Financing Principal Payments made with the Redemption of the Ocotillo Springs taxable MRB</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of TOB Trust Financings Principal Payments Made in Connection With Repayment or Sale of Underlying Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond Purchase Commitment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear7_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, weighted average fixed interest rate, year 7.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear7_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 7</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear7_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2032</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ComptonCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Compton, CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ComptonCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Compton, CA.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ComptonCaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compton, CA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LovelandCOMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loveland, CO [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LovelandCOMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loveland C O [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LovelandCOMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loveland, CO.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseDecreaseFinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase Decrease Financing Receivable Allowance For Credit Losses Recovery</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseDecreaseFinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase (decrease) financing receivable allowance for credit losses recovery.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseDecreaseFinancingReceivableAllowanceForCreditLossesRecovery_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Recovery of prior credit loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPartnershipRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPartnershipRevenue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Partnership Revenue</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfOtherComprehensiveIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Asset, Gain (Loss), Statement of Other Comprehensive Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfDistributionsToPartners_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Distributions paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfDistributionsToPartners_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment Of Distributions To Partners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfDistributionsToPartners_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The cash outflow from the distribution to the partners consisting of a distribution of earnings or return of capital.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average Notional Amount, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Reportable Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfReportableSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Reportable Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MurfreesboroTNMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Murfreesboro, TN [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MurfreesboroTNMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Murfreesboro T N [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MurfreesboroTNMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Murfreesboro TN [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LasPalmasTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Las Palmas two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LasPalmasTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Las Palmas II [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LasPalmasTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Las Palmas Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Name of each exchange on which registered</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentVariableInterestRateTypeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedAcquisitionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Month Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedAcquisitionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedAcquisitionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned Acquisition Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedAcquisitionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment owned, acquisition month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LinesOfCreditAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lines Of Credit [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LinesOfCreditAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lines of Credit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Property, Plant and Equipment, Gross, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Property, Plant and Equipment, Gross, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Carrying Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Real estate assets before accumulated depreciation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OtherAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OtherAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HelotesTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Helotes Texas [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HelotesTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Helotes Texas [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HelotesTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Helotes, TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HuttoTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hutto TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HuttoTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hutto T X</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HuttoTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hutto TX.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maximum Exposure to Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reporting Entity to Variable Interest Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityEntityMaximumLossExposureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BoerneTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Boerne, TX.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BoerneTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Boerne, TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BoerneTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Boerne T X [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A-1 Preferred Units Issued on April Two Thousand Twenty Two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A-1 Preferred Units Issued on April Two Thousand Twenty Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A-1 Preferred Units issued on April 2022 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CounterpartyNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Counterparty Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneur-SeriesJ-4MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At The Entrepreneur - Series J-4 MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneur-SeriesJ-4MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the Entrepreneur - Series J-4 MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneur-SeriesJ-4MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur - Series J-4 MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income (loss) before income taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWilcrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at Wilcrest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWilcrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Wilcrest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWilcrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar at Wilcrest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Assets at Fair Value, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Net Asset (Liability)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetAssetLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets at Fair Value, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage at Hutto [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Hutto</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Hutto.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate assets: (Note 8)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership funded amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal Outstanding at Date of Redemption</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentOwnedAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cost Adjusted for Paydowns and Allowances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableGrossAllowanceAndNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TOB Trusts Securitization [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">T O B Trusts Securitization [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">TOB trusts securitization.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income Unrealized Holding Gain Loss On Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other comprehensive income unrealized holding gain loss on securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized losses on securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear8_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, weighted average fixed interest rate, year 8.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear8_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 8</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear8_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2033</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentExtendedMaturityPeriods_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument extended maturity period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentExtendedMaturityPeriods_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Extended Maturity Periods</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentExtendedMaturityPeriods_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt Instrument extended maturity periods.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total cash, cash equivalents and restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accounts payable, accrued expenses and other liabilities (Note 11)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable, accrued expenses and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total accounts payable, accrued expenses and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable and Accrued Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash paid during the period for interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Basis [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Initial Principal Funded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Post-Conversion Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at empire bb-two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at Empire BB-Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at Empire - Series BB-2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsAndJointVenturesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investments and Joint Ventures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 5</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, Weighted Average Fixed Interest Rate, Year 5</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfRentalUnitsFinancedByMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of rental units financed by mortgage revenue bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfRentalUnitsFinancedByMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Rental Units Financed By Mortgage Revenue Bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfRentalUnitsFinancedByMortgageRevenueBonds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of rental units financed by mortgage revenue bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtMckinneyFallsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage at McKinney Falls [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtMckinneyFallsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage At McKinney Falls.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermPurchaseCommitmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Purchase Commitment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermPurchaseCommitmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Purchase Commitment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCopperfieldMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at Copperfield [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCopperfieldMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Copperfield [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCopperfieldMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar At Copperfield.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SoLaImpactOpportunityZoneFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SoLa Impact Opportunity Zone Fund.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SoLaImpactOpportunityZoneFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">So La Impact Opportunity Zone Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SoLaImpactOpportunityZoneFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">So La Impact Opportunity Zone Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SoLaImpactOpportunityZoneFundMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">SoLa Impact Opportunity Zone Fund [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsIssuedOnJuneTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A-1 Preferred Units issued on June 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsIssuedOnJuneTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A1 Preferred Units Issued On June Two Thousand Twenty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA1PreferredUnitsIssuedOnJuneTwoThousandTwentyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series a1 preferred units issued on june two thousand twenty three member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillageSupplementalPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2939 - Osprey Village Supplemental property loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillageSupplementalPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One Xf Two Thousand Nine Hundred And Thirty Nine Osprey Village Supplemental Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillageSupplementalPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one xf two thousand nine hundred and thirty nine osprey village supplemental property loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnBoulevardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar on the Boulevard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnBoulevardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar On Boulevard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnBoulevardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar on the Boulevard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfMortgageLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on sale of mortgage revenue bond</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfMortgageLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sale of Mortgage Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfMortgageLoans_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on sale of mortgage revenue bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate Index</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentDescriptionOfVariableRateBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Interest Rate Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DecaturAngleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Decatur Angle [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DecaturAngleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Decatur-Angle [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DecaturAngleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Decatur Angle [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DecaturAngleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Decatur-Angle [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock Units (RSUs) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockUnitsRSUMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Restricted Unit Awards [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetOther_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value, measurement with unobservable inputs reconciliation, recurring basis, asset, other.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Held-to-Maturity Securities Provision For Loan Losses Expensed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Held-to-maturity securities provision for loan losses expensed.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Provision for credit loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentCommitmentsInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentCommitmentsInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Commitments Interest Rate Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentCommitmentsInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment commitments interest rate percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Income:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Component of Operating Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_OtherPropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_OtherPropertyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Property [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LandHeldForDevelopmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land Held for Development [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LandHeldForDevelopmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Land Held For Development [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LandHeldForDevelopmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Land held for development.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fixed Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fixed notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FixedNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed - Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtWestoverHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Westover Hills [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtWestoverHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Westover Hills [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtWestoverHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Westover Hills.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanVicenteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">San Vicente [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanVicenteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">San Vicente [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanVicenteMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">San Vicente.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Receivables</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current income tax expense (benefit)</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CurrentIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptBondSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TEBS Financings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptBondSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Exempt Bond Securitization [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptBondSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax exempt bond securitization.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneBridgeLendingFundManagerLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greystone Bridge Lending Fund Manager LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneBridgeLendingFundManagerLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greystone Bridge Lending Fund Manager LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreystoneBridgeLendingFundManagerLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greystone Bridge Lending Fund Manager LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeightsAtHeightsAtFiveHundredFifteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Heights at 515 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeightsAtHeightsAtFiveHundredFifteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Heights At Heights At Five Hundred Fifteen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HeightsAtHeightsAtFiveHundredFifteenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Heights at 515.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontecitoAtWilliamsRanchApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Montecito at Williams Ranch Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontecitoAtWilliamsRanchApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Montecito At Williams Ranch Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontecitoAtWilliamsRanchApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Montecito at Williams Ranch Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneGreenvilleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Freestone Greenville [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneGreenvilleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Freestone greenville member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingBasisSpreadOnVariableFloorRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Floor rate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingBasisSpreadOnVariableFloorRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan Financing Basis Spread on Variable Floor Rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfAverageNotionalAmountAndWeightedAverageFixedRateByYearTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Average Notional Amount and Weighted Average Fixed Rate by Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfAverageNotionalAmountAndWeightedAverageFixedRateByYearTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Average Notional Amount and Weighted Average Fixed Rate by Year [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfAverageNotionalAmountAndWeightedAverageFixedRateByYearTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of Average Notional Amount and Weighted Average Fixed Rate by Year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partners&#700; Capital:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnership's Total and Remaining Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Partnership's Commitments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of partnership's commitments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TotalReturnSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Return Swaps [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TotalReturnSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Total Return Swap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRateMinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective rate - minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRateMinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Rate Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRateMinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Effective rate - minimum [Member] - Effective interest rate - minimum rate for available for sale portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIIGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One X F Two Thousand Nine Hundred And Fifty Poppy Grove I I I G I L [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIIGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2021-XF2953 - Poppy Grove III GIL</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIIGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2021-XF2953 - Poppy Grove III GIL</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonTaxableGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hope on Avalon Taxable GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonTaxableGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hope on Avalon Taxable GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonTaxableGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hope on Avalon Taxable GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateSalesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of MRB Sales</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateSalesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bonds On Real Estate Sales Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateSalesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bonds on real estate sales.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage Revenue Bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BryanTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bryan, texas.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BryanTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bryan, Texas [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BryanTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bryan, TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Gain on Sale of Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on sale of investments in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on sale of investments in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain Or Loss On Sale Of Investment In Unconsolidated Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gain or loss on sale of investment in unconsolidated entity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gain (loss) on Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvailableForSaleSecurityAndPropertyLoanReceivableMaximumExposure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Security And Property Loan Receivable Maximum Exposure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvailableForSaleSecurityAndPropertyLoanReceivableMaximumExposure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Available for Sale Security and Property Loan Receivable, Maximum Exposure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvailableForSaleSecurityAndPropertyLoanReceivableMaximumExposure_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available for Sale Security and Property Loan Receivable, Maximum Exposure - This represents the maximum exposure to loss related to the Available for Sale Securities and Property Loan Receivables.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptBondSecuritizationResidualFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TEBS Residual Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptBondSecuritizationResidualFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tax Exempt Bond Securitization Residual Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxExemptBondSecuritizationResidualFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tax exempt bond securitization residual financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">40rty on Colony [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forty on Colony [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forty on Colony [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">40rty on Colony.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfSuitsOnPaseoMfProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of the Suites on Paseo MF Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfSuitsOnPaseoMfProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Suits On Paseo Mf Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfSuitsOnPaseoMfProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sale of suits on paseo mf property.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Act File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OasisAtTwinLakesGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Oasis at Twin Lakes GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OasisAtTwinLakesGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oasis at Twin Lakes GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OasisAtTwinLakesGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Oasis at Twin Lakes GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseInTheMaximumCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase in the maximum commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseInTheMaximumCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase In The Maximum Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseInTheMaximumCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase in the maximum commitment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtMurfreesboroMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Murfreesboro [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtMurfreesboroMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Murfreesboro [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtMurfreesboroMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Murfreesboro [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized gains (losses) on bond purchase commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment, after Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unrealized gains (losses) on bond purchase commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateFaceAmountOfDiscountOfMortgages_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage loans on real estate face amount of discount of mortgages.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateFaceAmountOfDiscountOfMortgages_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Principal acquired at discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets (Note 9)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OhioPropertiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ohio Properties [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OhioPropertiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ohio Properties [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OhioPropertiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ohio Properties - three properties located in Ohio - Crescent Village Townhomes II LP, Cincinnati, Ohio; Willow Bend Townhomes II LP, Hilliard, Ohio; New Post Woods Townhomes, Reynoldsburg, Ohio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdate202307Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update 2023-07 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdate202307Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASU 2023-07 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments, Gain (Loss) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Realized and Unrealized Gains and Losses of Partnership's Derivative Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentEstimatedClosingDateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment Estimated Closing Date Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentEstimatedClosingDateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond Purchase Commitment Estimated Closing Date Description.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentEstimatedClosingDateDescription_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated Closing Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment Year And Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Forward Bond Purchase Commitment Year and Month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Accounts Payable and Accrued Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accounts Payable and Accrued Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Decrease in accounts payable, accrued expenses and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanAmountOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Construction Loan Amount Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanAmountOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Construction loan amount outstanding.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConstructionLoanAmountOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan Balance as of June 30, 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedUnrecognizedUnrealizedAppreciations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative Unrealized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedUnrecognizedUnrealizedAppreciations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned Unrecognized Unrealized Appreciations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedUnrecognizedUnrealizedAppreciations_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment owned unrecognized unrealized appreciations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2953 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">TOB Trust 2021-XF2953 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One-XF-Two Thousand Nine Hundred and Fifty Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one-XF-two thousand nine hundred and fifty three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalAmountOutstandingOnLoansSecuritized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan, Securitized or Asset-Backed Financing Arrangement, Principal Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalAmountOutstandingOnLoansSecuritized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Outstanding principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeCategorizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJFiveMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series J-5 mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJFiveMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series J Five Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJFiveMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series J-5 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ScenarioUnspecifiedDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Scenario [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DistributionsMadeToMemberOrLimitedPartnerByDistributionTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Distribution Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgagesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgagesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgages [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Approved grant of restricted units and other awards to employees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsAndRemainingFundingCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Date Committed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsAndRemainingFundingCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Mortgage Revenue Bonds And Remaining Funding Commitment Year And Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsAndRemainingFundingCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable mortgage revenue bonds and remaining funding commitment year and month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsAndRemainingFundingCommitmentYearAndMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Month Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">General and Administrative Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and administrative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">General and administrative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear9_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average notional amount year 9.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear9_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount Year 9</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear9_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2034</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayer-SeriesMMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At The Mayer - Series M MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayer-SeriesMMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the Mayer - Series M MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PowdersvilleSCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Powdersville S C [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PowdersvilleSCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Powdersville, SC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PowdersvilleSCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Powdersville, SC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRedemptionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument redemption month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRedemptionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRedemptionMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSecuredLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Secured Lines of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSecuredLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal borrowing on secured lines of credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CrossCreekMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cross Creek [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CrossCreekMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cross Creek [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CrossCreekMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cross Creek, Beaufort, South Carolina [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtStoneCreekMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Stone Creek [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtStoneCreekMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Stone Creek [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtStoneCreekMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Stone Creek.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteesExtendedMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Guarantees extended maturity period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteesExtendedMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guarantees Extended Maturity Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteesExtendedMaturityPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Guarantees extended maturity period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RedeemablePreferredUnitsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable Preferred Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RedeemablePreferredUnitsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Redeemable Preferred Units Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RedeemablePreferredUnitsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Redeemable preferred units disclosure text block.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hope on Avalon GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hope on Avalon GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hope on Avalon GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SouthparkMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Southpark MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SouthparkMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Southpark MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SouthparkMrbMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Southpark MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRateMaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective rate - maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRateMaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Rate Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRateMaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum effective interest rate for the available for sale portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgages Payable [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgages Payable [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Range of Effective Yields</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EffectiveRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Effective rate - the effective rate for the available for sale securities held in the portfolio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncomeTaxProvisionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Provision [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncomeTaxProvisionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Provision [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncomeTaxProvisionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income tax provision.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility, interest rate during period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Interest Rate During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaximumBalanceOfMRBStabilization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum Balance Of MRB Stabilization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaximumBalanceOfMRBStabilization_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum balance of MRB stabilization.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaximumBalanceOfMRBStabilization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum balance of MRB stabilization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Expenses related to the agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfRealEstateProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of Real Estate Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfRealEstateProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Real Estate Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfRealEstateProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Real Estate Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One XF Two Thousand Nine Hundred And Fifty Three Willow Place Apartments GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2021-XF2953 - Willow Place Apartments GIL</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2021-XF2953 - Willow Place Apartments GIL</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesHTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series H-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesHTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series H-T Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesHTMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series H-T mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LutheranGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lutheran Gardens [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LutheranGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lutheran gardens.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LutheranGardensMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lutheran Gardens [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorConstructionFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior Construction Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorConstructionFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Senior Construction Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeniorConstructionFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Senior Construction Financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Beneficial Unit Certificate Holders [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Beneficial Unit Certificates [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Beneficial unit certificates.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recently Issued Accounting Pronouncements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_JointVentureInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Joint Venture Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_JointVentureInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Joint venture investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Future Contractual Payments for Partnership's Operating Leases and Reconciliation to Carrying Value of Operating Lease Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Financing Fixed Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanFinancingFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan Financing Fixed Interest Rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FifteenWestApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">15 West Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FifteenWestApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fifteen West Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FifteenWestApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fifteen West Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">RUAs granted with vesting range</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesMMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series M [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesMMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series M Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesMMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series M Mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Allowance for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Allowance for credit losses (Note 10)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loans, allowance for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loans, Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwaptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Swaption [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwaptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swaption [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfPartnershipsCapitalContributionsToEquityInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of partnership's capital contributions to equity investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfPartnershipsCapitalContributionsToEquityInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Partnerships Capital Contributions to Equity Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PercentageOfPartnershipsCapitalContributionsToEquityInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of partnerships capital contributions to equity investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove I [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Depreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Depreciation, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HelotesTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Helotes, TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HelotesTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Helotes T X [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HelotesTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Helotes, TX.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying (Reported) Amount, Fair Value Disclosure [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reported Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SecuredLineOfCreditDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Secured Lines of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SecuredLineOfCreditDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Line of Credit Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SecuredLineOfCreditDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Secured line of credit disclosure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Additional debt financing proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Issuance of Long-term Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from debt financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfLongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Long-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentTypeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment, Type [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized compensation expense related to nonvested RUAs granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedShareBasedAwardsOtherThanOptions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Holdings, Schedule of Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentHoldingsScheduleOfInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Investments in MRBs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PerformingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Performing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PerformingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PerformingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIiiGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove III GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIiiGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove III GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIiiGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove III GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Depreciation, Depletion and Amortization, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Depreciation and amortization expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Depletion and Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest income earned upon redemption of an Available-for-Sale security.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contingent Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contingent interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Contingent interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnersCapitalReverseUnitSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rounding of BUCs related to BUCs Distributions/Reverse Unit Split</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnersCapitalReverseUnitSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partners Capital Reverse Unit Split.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnersCapitalReverseUnitSplit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners Capital Reverse Unit Split</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotesSeriesA-1MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agape Helotes Series A-1 MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotesSeriesA-1MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agape helotes series A-1 MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AgapeHelotesSeriesA-1MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agape Helotes - Series A-1 MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RisksAndUncertaintiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks And Uncertainties Policy [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RisksAndUncertaintiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Risks and uncertainties.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RisksAndUncertaintiesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risks and Uncertainties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfComponentsOfIncomeTaxExpenseBenefitTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Comprehensive income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateScheduleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage Loans On Real Estate Schedule [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateScheduleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain (Loss) on Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrealizedGainLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">(Gains) losses on derivative instruments, net of cash paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsSanJuanCapistranoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Seasons San Juan Capistrano [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsSanJuanCapistranoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Seasons San Juan Capistrano [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsSanJuanCapistranoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Seasons San Juan Capistrano.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted-average Grant-Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValueRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swaps [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Accounts Notes Loans And Financing Receivable [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBPreferredUnitsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series B preferred units.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted unit compensation expense</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Income per BUC</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove III [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove I I I [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove I I I.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DateOfDebtBorrowing_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Year Acquired</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DateOfDebtBorrowing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Date of debt borrowing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove I [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove I [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove I.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsLakewoodMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Seasons Lakewood [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsLakewoodMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Seasons Lakewood [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsLakewoodMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Seasons Lakewood.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Assets at Fair Value, beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Assets at Fair Value, ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartments2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sandy Creek Apartments 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartments2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sandy Creek Apartments 2.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartments2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Sandy Creek Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DeferredIncomeTaxExpenseBenefitAndIncomeTaxPayableReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Expense Benefit And Income Tax Payable Receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DeferredIncomeTaxExpenseBenefitAndIncomeTaxPayableReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred income tax expense benefit and income tax payable receivables.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DeferredIncomeTaxExpenseBenefitAndIncomeTaxPayableReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred income tax benefit &amp; income tax payable/receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partner Type of Partners' Capital Account, Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partner Type of Partners' Capital Account, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalNotesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership Income, Expenses and Distributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalNotesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Notes Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondRemainingMaximumCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maximum Remaining Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondRemainingMaximumCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining maximum commitments amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondRemainingMaximumCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bond Remaining Maximum Commitments Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondRemainingMaximumCommitmentsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bond remaining maximum commitments amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCovenantCompliance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, covenant compliance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCovenantCompliance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Covenant Compliance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnTheBlvdSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar On The Blvd Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnTheBlvdSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar on the blvd series a.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnTheBlvdSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar on the Blvd - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountDistributions_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Partners' Capital Account, Distributions, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountDistributions_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Regular distribution</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountDistributions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Distributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable mortgage revenue bonds commitment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Mortgage Revenue Bonds Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable MRB, Total Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OperatingLeaseAnnualLeasePayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Annual lease payments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OperatingLeaseAnnualLeasePayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Annual Lease Payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OperatingLeaseAnnualLeasePayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating Lease Annual Lease Payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReimbursementOfFranchiseMarginTaxesPaidOnBehalfOfUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reimbursable franchise margin taxes incurred on behalf of unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReimbursementOfFranchiseMarginTaxesPaidOnBehalfOfUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reimbursement Of Franchise Margin Taxes Paid On Behalf Of Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReimbursementOfFranchiseMarginTaxesPaidOnBehalfOfUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reimbursement of franchise margin taxes paid on behalf of unconsolidated entities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipSBondPurchaseCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnership's Bond Purchase Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipSBondPurchaseCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Partnership S Bond Purchase Commitments Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipSBondPurchaseCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of Partnership's bond purchase commitments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfServiceFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payment of service fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfServiceFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment of Service Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfServiceFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment of service fees.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfOfferingCostsRelatedToSaleOfBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of offering costs related to the sale of BUCs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfOfferingCostsRelatedToSaleOfBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment Of Offering Costs Related To Sale Of Beneficial Unit Certificates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentOfOfferingCostsRelatedToSaleOfBeneficialUnitCertificates_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment Of Offering Costs Related To Sale Of Beneficial Unit Certificates.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partner Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnerTypeOfPartnersCapitalAccountAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partner Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Principal payments on mortgages payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Name of Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Name of Property [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at Empire [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at Empire.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at Empire [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NM_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NM [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NM_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEW MEXICO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal payments received on governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Governmental Issuer Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Village at Avalon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Village At Avalon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VillageAtAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Village at avalon member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Assets [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from investing activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trust 2021-XF2953 - Poppy Grove II GIL</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One X F Two Thousand Nine Hundred And Fifty Poppy Grove I I G I L [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2021-XF2953 - Poppy Grove II GIL</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfLoansReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Loans Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfLoansReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross proceeds from sale of loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable - Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Notes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableNotesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable notes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary Of Significant Accounting Policies [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Significant Accounting Policies [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfSignificantAccountingPoliciesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of significant accounting policies.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingCurrentMaturities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Current Maturities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingCurrentMaturities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt financing provided through the securitization of tax-exempt mortgage revenue bonds scheduled to be repaid within one year .</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingCurrentMaturities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AZ_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">AZ [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AZ_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ARIZONA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageNotesPayableDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageNotesPayableDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Notes Payable Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Seriesa1PreferredunitsissuedonfebruarytwothousandtwentythreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A1 preferred units issued on february two thousand twenty three member.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Seriesa1PreferredunitsissuedonfebruarytwothousandtwentythreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SeriesA1PreferredUnitsIssuedOnFebruaryTwoThousandTwentyThree[Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Seriesa1PreferredunitsissuedonfebruarytwothousandtwentythreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A-1 Preferred Units issued on February 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RestatementDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revision of Prior Period [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument Redemption [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensOfPineGlenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greens of Pine Glen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensOfPineGlenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greens Of Pine Glen [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreensOfPineGlenMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greens of Pine Glen, Durham, North Carolina.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtGermantownMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage At Germantown [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtGermantownMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Germantown [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtGermantownMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at Germantown.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt financing, fair value disclosure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable bonds,</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Outstanding liabilities due to related parties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherAssetsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Other Assets [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstatePrincipalOutstandingAmountOfSales_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans On Real Estate Principal Outstanding Amount of Sales</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstatePrincipalOutstandingAmountOfSales_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage Loans On Real Estate Principal Outstanding Amount of Sales</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstatePrincipalOutstandingAmountOfSales_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal Outstanding at Date of Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndEquityInstrumentsCashAndCashEquivalentsUnrealizedAndRealizedGainsLossesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage Revenue Bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndEquityInstrumentsCashAndCashEquivalentsUnrealizedAndRealizedGainsLossesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment in Debt and Equity Instruments and Cash and Cash Equivalent [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateDerivativesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Derivatives [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedUnrecognizedUnrealizedDepreciations_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Cumulative Unrealized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedUnrecognizedUnrealizedDepreciations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Owned Unrecognized Unrealized Depreciations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentOwnedUnrecognizedUnrealizedDepreciations_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment owned unrecognized unrealized depreciations.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instruments (Reported within Other Assets) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_The5050MfPropertyMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The 50/50 MF Property--Mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_The5050MfPropertyMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The 50/50 MF Property--Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_The5050MfPropertyMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The 50/50 MF Property--Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Principal Proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from property loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Property Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal payments received on property loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RaleighNCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Raleigh NC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RaleighNCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Raleigh NC</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FirstMortgageOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Series A-1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FirstMortgageOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FirstMortgageOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">First Mortgage One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FirstMortgageOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">First mortgage one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net income (loss) available to Partners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneGreeleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Freestone Greeley.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneGreeleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Freestone Greeley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Lines of credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured lines of credit (Note 14)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-term Line of Credit, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Line of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoCapitalMarketsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Mizuho [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoCapitalMarketsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mizuho Capital Markets [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoCapitalMarketsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mizuho Capital Markets L L C [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MizuhoCapitalMarketsLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mizuho capital markets LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Centennial Crossings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Centennial Crossings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Centennial Crossings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFinancialInstrumentsAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Financial Instruments, Assets [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFinancialInstrumentsAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Derivative Instruments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFinancialInstrumentsAssetsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivative Instruments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ForwardLoanPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forward Loan Purchase Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ForwardLoanPurchaseAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Forward loan purchase agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MorganStanleyBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Morgan Stanley Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MorganStanleyBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Morgan Stanley Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MorganStanleyBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Morgan stanley bank.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromLiquidation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from liquidation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromLiquidation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Liquidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromLiquidation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from liquidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Assets, Fair Value Disclosure, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_McDonoughGeorgiaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">McDonough, GA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_McDonoughGeorgiaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mc Donough Georgia [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_McDonoughGeorgiaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">McDonough, Georgia.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnfundedCommitmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unfunded commitments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnfundedCommitmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unfunded Commitments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnfundedCommitmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unfunded Commitments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FloorInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Floor rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FloorInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Floor Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FloorInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Floor interest rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average Notional</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average Notional Amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AventineApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Aventine apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AventineApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aventine Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AventineApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Aventine Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of RUA Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNonvestedRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments in Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityMethodInvestmentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Method Investments and Joint Ventures Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnrealizedGainOrLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Unrealized (gains) losses on derivatives, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnrealizedGainOrLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gain Or Loss On Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnrealizedGainOrLossOnDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unrealized gain or loss on derivatives.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SilverMoonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Silver Moon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SilverMoonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Silver Moon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SilverMoonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Albuquerque, New Mexico [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontclairApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Montclair Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontclairApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Montclair Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MontclairApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Montclair apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAndOtherSecuredFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages Payable and Other Secured Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAndOtherSecuredFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgages Payable And Other Secured Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgagesPayableAndOtherSecuredFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgages payable and other secured financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by (used in) investing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnDispositionOfRealEstateDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Disposition of Real Estate, Discontinued Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GatewayVillageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gateway Village [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GatewayVillageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gateway Village [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GatewayVillageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gateway village.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of each class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Segment Reporting Information By Segment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Segment Reporting Information, by Segment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Woodington Gardens Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Woodington Gardens Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WoodingtonGardensApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Woodington gardens apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Investment Income, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M31TebsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">M31 TEBS [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M31TebsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">M31 TEBS.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M31TebsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">M31 TEBS [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loans allowance for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loans Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Allowance for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartmentsGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sandy Creek Apartments G I L.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SandyCreekApartmentsGILMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sandy Creek Apartments GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related and Nonrelated Parties [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage Loans On Real Estate [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Osprey Village [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Osprey Village [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Osprey Village [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquitySharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Partnership shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquitySharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redeemable preferred units, issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquitySharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity, Shares Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReclassificationOfGainOnSaleOfMortgageRevenueBondToNetIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification of gain on sale of mortgage revenue bond to net income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReclassificationOfGainOnSaleOfMortgageRevenueBondToNetIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reclassification Of Gain On Sale Of Mortgage Revenue Bond To Net Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ReclassificationOfGainOnSaleOfMortgageRevenueBondToNetIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Reclassification of gain on sale of mortgage revenue bond to net income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForCreditLossesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Credit Losses [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForCreditLossesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoAndVantageAtCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage at Hutto and Vantage at Cresta Bella [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoAndVantageAtCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at hutto and vantage at cresta bella.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoAndVantageAtCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage at Hutto and Vantage at Cresta Bella [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestRealizedOnInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contingent Interest Realized On Investing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestRealizedOnInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Contingent interest realized on investing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ContingentInterestRealizedOnInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contingent interest realized on investing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA2MortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A-2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA2MortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A-2 Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesA2MortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A-2 Mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remainder of 2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentPaymentOfExtensionFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payment of extension fee percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentPaymentOfExtensionFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Payment of Extension Fee Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentPaymentOfExtensionFeePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument payment of extension fee percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stated Maturities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentMaturityYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument maturity year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LegalEntityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LegalEntityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Changes in operating assets and liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at Empire - Series BB-4 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At Empire Bb Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpireBbFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at empire Bb four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Avistar (February 2013 Portfolio) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar (February 2013 Portfolio) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar Portfolio [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar Portfolio [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAvailableForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">RSU available for future issuance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAvailableForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Shares Available for Future Issuance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAvailableForFutureIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award equity instruments other than options shares available for future issuance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaryaliceCircleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MaryAlice Circle [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaryaliceCircleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maryalice Circle [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MaryaliceCircleMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maryalice Circle [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaCrossingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Magnolia Crossing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaCrossingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Magnolia Crossing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaCrossingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Magnolia Crossing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BaltimoreMdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Baltimore, MD</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BaltimoreMdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Baltimore, MD [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BaltimoreMdMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Baltimore, MD.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WaukeganIllinoisMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Waukegan, IL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WaukeganIllinoisMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Waukegan Illinois [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WaukeganIllinoisMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Waukegan, Illinois.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intrinsic value of unvested RUAs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share based compensation arrangement by share based payment award equity instruments other than options grants in period value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Income Location, Balance [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Centennial crossings gil member</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Centennial Crossings GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Centennial Crossings GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Adoption Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental Issuer Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans disclosure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesAOneMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series A-1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesAOneMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series A One Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesAOneMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series A one mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfRealEstatePartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash received/sales proceeds returned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfRealEstatePartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gross proceeds to the partnership</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfRealEstatePartnership_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gross proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromDivestitureOfRealEstatePartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gross Proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Related Party Transactions By Related Party [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRelatedPartyTransactionsByRelatedPartyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnrealizedGainsLossesFromPropertyLoanHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrealized Gains (Losses) From Property Loan Held For Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnrealizedGainsLossesFromPropertyLoanHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unrealized gains (losses) from property loan held for sale.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_UnrealizedGainsLossesFromPropertyLoanHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrealized gains (losses) from property loan held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansInitialPrincipalAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loans initial principal acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansInitialPrincipalAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loans Initial Principal Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansInitialPrincipalAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable GIL, Initial Principal Funding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OhioPropertiesSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ohio Properties - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OhioPropertiesSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ohio Properties - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OhioPropertiesSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ohio Properties - Series A.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GlenviewApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Glenview Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GlenviewApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Glenview Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GlenviewApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Glenview apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBPreferredUnitsIssuedOnFebruaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series B Preferred Units Issued On February 2024 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBPreferredUnitsIssuedOnFebruaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series B Preferred Units Issued On February Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBPreferredUnitsIssuedOnFebruaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series B Preferred Units Issued On February Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonySeriesPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">40rty on Colony - Series P [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonySeriesPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forty on Colony Series P [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FortyOnColonySeriesPMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Forty on Colony Series P.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnersCapitalAccountFixedRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partners capital account, fixed rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnersCapitalAccountFixedRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners Capital Account Fixed Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnersCapitalAccountFixedRate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partners capital account fixed rate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from financing activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Payable, Accrued Expenses and Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable and Accrued Liabilities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlacePropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2953 - Willow Place Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlacePropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty One XF Two Thousand Nine Hundred And Fifty Three Willow Place Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlacePropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty one xf two thousand nine hundred and fifty three willow place property loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Equity Method Investments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEquityMethodInvestmentsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Equity Method Investments [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableMortgageRevenueBondsAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of taxable mortgage revenue bonds acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableMortgageRevenueBondsAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Taxable Mortgage Revenue Bonds Acquired Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableMortgageRevenueBondsAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Taxable MRB Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, to be Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale of mortgage revenue bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SouthPointeApartmentsSeriesATOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">South Pointe Apartments - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SouthPointeApartmentsSeriesATOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">South Pointe Apartments Series A T O B Trusts Securitization [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SouthPointeApartmentsSeriesATOBTrustsSecuritizationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">South Pointe Apartments Series A TOB Trusts Securitization.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HilltopAtSignalHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hilltop At Signal Hills [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HilltopAtSignalHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hilltop at signal hills.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HilltopAtSignalHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hilltop at Signal Hills [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Amount representing interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Liability, Undiscounted Excess Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountTreasuryUnitsReissued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of BUCs, net of issuance costs, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountTreasuryUnitsReissued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Treasury Units, Reissued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetProvisionForCreditGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Provision For Credit Gain Loss Included In Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetProvisionForCreditGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Provision For Credit Gain Loss Included In Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetProvisionForCreditGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total gain (losses) Included in earnings (provision for credit loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuarantyAgreementRequiredPartnershipToMaintainLiquidAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liquid assets to be maintained as per guaranty agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuarantyAgreementRequiredPartnershipToMaintainLiquidAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guaranty Agreement Required Partnership To Maintain Liquid Assets Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuarantyAgreementRequiredPartnershipToMaintainLiquidAssetsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Guaranty agreement required partnership to maintain liquid assets amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageSupplementalAndWillowPlaceApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Osprey Village Supplemental and Willow Place Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageSupplementalAndWillowPlaceApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Osprey Village Supplemental and Willow Place Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageSupplementalAndWillowPlaceApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Osprey Village Supplemental and Willow Place Apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCategoriesOfInvestmentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other than Temporary Impairment, Credit Losses Recognized in Earnings, Categories of Investments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of BUCs - Restricted and Unrestricted [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MS_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MS [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MS_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MISSISSIPPI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsAtSimiValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Seasons at Simi Valley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsAtSimiValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Seasons At Simi Valley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeasonsAtSimiValleyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Seasons at Simi Valley [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Assets Held-in-trust, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset, Held-in-Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets held in trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LincolnNebraskaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lincoln, NE [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LincolnNebraskaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lincoln Nebraska [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LincolnNebraskaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lincoln, Nebraska.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BUCs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Beneficial Unit Certificates Policy [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BeneficialUnitCertificatesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Beneficial unit certificates.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accounts Payable, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThirdPartyInvestorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Third-party Investor [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThirdPartyInvestorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Third Party Investor [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThirdPartyInvestorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Third party investor.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M45TEBSFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">M45 TEBS Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_M45TEBSFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">M45 TEBS Financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByAssetClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheResidencyAtEmpireMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Residency At Empire.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheResidencyAtEmpireMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Residency At Empire [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheResidencyAtEmpireMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Residency at Empire [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PrincipalPaymentsReceivedOnTaxableGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal payments received on taxable governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PrincipalPaymentsReceivedOnTaxableGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Principal Payments Received on Taxable Governmental Issuer Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PrincipalPaymentsReceivedOnTaxableGovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Principal payments received on taxable governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateDescriptionLoanCategoryAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtWilliamcrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concord at Williamcrest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtWilliamcrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concord At Williamcrest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtWilliamcrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Concord at Williamcrest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountPrivatePlacementOfUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Partnership issued preferred units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountPrivatePlacementOfUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnersCapitalAccountPrivatePlacementOfUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partners' Capital Account, Private Placement of Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfInvestmentMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfInvestmentMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Investment Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SaleOfInvestmentMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale of investment month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoVantageAtLovelandAndFreestoneCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Vantage At Hutto Vantage At Loveland And Freestone Cresta Bella [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoVantageAtLovelandAndFreestoneCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Vantage at hutto vantage at loveland and freestone cresta bella.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VantageAtHuttoVantageAtLovelandAndFreestoneCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vantage at Hutto Vantage at Loveland and Freestone Cresta Bella [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MI_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MI [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MI_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MICHIGAN</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GuaranteesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guarantees, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GuaranteesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated fair value of credit guaranties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted units awarded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove III [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy grove three.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Taxable governmental issuer loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterestAndDividend_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Interest and Dividend</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterestAndDividend_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Investment Income, Interest and Dividend, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeInterestAndDividend_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investment Income from sale of properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair Value Measurements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Property Loan Principal, net of allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, after Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument Redemption [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyTwoXfThreeThousandAndFiftyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2022-XF3059 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyTwoXfThreeThousandAndFiftyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust Twenty Twenty Two XF Three Thousand And Fifty Nine [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TrustTwentyTwentyTwoXfThreeThousandAndFiftyNineMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust twenty twenty two xf three thousand and fifty nine.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RealEstateOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ownership interest percentage in MF property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RealEstateOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Ownership Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RealEstateOwnershipPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate ownership percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Centennial crossings one.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Centennial Crossings One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CentennialCrossingsOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Centennial Crossings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HardenRanchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Harden Ranch [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HardenRanchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Harden Ranch [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HardenRanchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Harden ranch.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Liabilities at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Liabilities, Fair Value Disclosure, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteeTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Guarantee Terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteeTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Guarantee Terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteeTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guarantee Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteeTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Guarantee term.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanMarcosTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">San Marcos TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanMarcosTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">San Marcos T X [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanMarcosTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">San Marcos TX.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CompanionAtThornhillApartmentsMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Companion At Thornhill Apartments MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CompanionAtThornhillApartmentsMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Companion at Thornhill Apartments MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CompanionAtThornhillApartmentsMRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Companion at Thornhill Apartments MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LaderaTxMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ladera TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LaderaTxMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ladera TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromReturnOfInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Return of investments in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromReturnOfInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from return of investments in unconsolidated entities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromReturnOfInvestmentsInUnconsolidatedEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Return of investments in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfAMortgageRevenueBond_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of a Mortgage Revenue Bond</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfAMortgageRevenueBond_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sale of a mortgage revenue bond.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfAMortgageRevenueBond_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of mortgage revenue bonds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WatchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Watch [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WatchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Watch.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WatchMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Watch [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipMaturityExtendedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Partnership maturity extended date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipMaturityExtendedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Maturity Extended Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipMaturityExtendedDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership Maturity Extended Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonrecourseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non recourse</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonrecourseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonrecourse [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneLaderaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Freestone Ladera [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneLaderaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Freestone Ladera [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2015 Equity Incentive Plan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">2015 Equity Incentive Plan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_EquityIncentivePlanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">2015 Equity Incentive Plan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAllocatedToGeneralPartners_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General Partner</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAllocatedToGeneralPartners_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Allocated to General Partners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteeObligationsLoanBalancePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Guarantee obligations loan balance percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteeObligationsLoanBalancePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guarantee Obligations Loan Balance Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteeObligationsLoanBalancePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Guarantee obligations loan balance percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJFourMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series J-4 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJFourMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series J Four Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesJFourMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series J-4 mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long Term Debt Maturities Repayments Of Principal After Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long term debt maturities repayments of principal after year four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Financing Receivable Allowance For Credit Losses [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur - Series J-2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the entrepreneur J- two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at the Entrepreneur J- Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AmortizationOfBondDiscountPremiumAndAcquisitionFee_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bond premium, discount and acquisition fee amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AmortizationOfBondDiscountPremiumAndAcquisitionFee_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Bond Discount Premium and Acquisition Fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AmortizationOfBondDiscountPremiumAndAcquisitionFee_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amortization Of Bond Discount Premium and Acquisition Fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableGovernmentalIssuerLoanAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary Of Taxable Governmental Issuer Loan Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableGovernmentalIssuerLoanAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary Of Taxable Governmental Issuer Loan Acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableGovernmentalIssuerLoanAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Taxable Governmental Issuer Loan Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Referral fees paid to an affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership received a fee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionAmountsOfTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Investment management fees paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LegalEntityTypeOfCounterpartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Legal Entity Type of Counterparty</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LegalEntityTypeOfCounterpartyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Legal Entity Type of Counterparty [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements and redemptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Settlements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfDerivatives_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Realized (gains) losses on derivatives, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sale of Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipAdvancedAdditionalFunds_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Advanced Additional Funds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipAdvancedAdditionalFunds_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership advanced additional funds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipAdvancedAdditionalFunds_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership advanced additional funds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accrued Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoanOnRealEstatePropertyLocation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoanOnRealEstatePropertyLocation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loan on Real Estate Property Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoanOnRealEstatePropertyLocation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage loan on real estate property location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromFinalLiquidation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from Final Liquidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromFinalLiquidation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Final Liquidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromFinalLiquidation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional proceeds from final liquidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred financing costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RenaissanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Renaissance [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RenaissanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Renaissance [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RenaissanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Renaissance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar on the Hills [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar On Hills [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarOnHillsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar on Hills.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBPreferredUnitsIssuedOnJanuaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series B Preferred Units Issued On January 2024 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBPreferredUnitsIssuedOnJanuaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series B Preferred Units Issued On January Two Thousand Twenty Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SeriesBPreferredUnitsIssuedOnJanuaryTwoThousandTwentyFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Series B Preferred Units Issued On January Two Thousand Twenty Four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CostsAndExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Costs and Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromPaymentToDivestitureOfRealEstatePartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from payment to divestiture of real estate partnership.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromPaymentToDivestitureOfRealEstatePartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Payment to Divestiture of Real Estate Partnership</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromPaymentToDivestitureOfRealEstatePartnership_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Proceeds to the Partnership</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DecreaseInShortTermInterestRatesInBasisPoints_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Decrease in short term interest rates in basis points.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DecreaseInShortTermInterestRatesInBasisPoints_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Decrease in short term interest rates in basis points</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DecreaseInShortTermInterestRatesInBasisPoints_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Decrease in short term interest rates in basis points</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Total Debt Financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Debt [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OtherAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OtherAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtSondrioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Park at Sondrio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtSondrioMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Park at Sondrio [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseInPartnershipsCommitmentAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase in partnerships commitment amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseInPartnershipsCommitmentAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase in partnerships commitment amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncreaseInPartnershipsCommitmentAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase In Partnerships Commitment Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lender Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lender Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Redeemable Preferred Unit distributions and accretion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityAccretionToRedemptionValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity, Accretion to Redemption Value, Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarIn09SeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar In 09 Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarIn09SeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar in 09 series a.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarIn09SeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar in 09 - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TriangleSquarePredevelopmentProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Triangle Square Predevelopment Project [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TriangleSquarePredevelopmentProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Triangle square predevelopment project</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Schedule of Available-for-sale Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueBalanceSheetGroupingFinancialStatementCaptionsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationByCategoryOfDebtSecurityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Security Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationByCategoryOfDebtSecurityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Security Category [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtLittleYorkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concord at Little York [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtLittleYorkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concord At Little York [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtLittleYorkMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Concord at Little York.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Related Party Transaction [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RelatedPartyTransactionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Related Party Transaction [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans and Taxable Governmental Issuer Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans and taxable governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts Notes And Loans Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt Financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured Lines of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RateForAdministrationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rate for administration fees receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RateForAdministrationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Rate For Administration Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RateForAdministrationFees_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Rate for administration fees - rate charged on the bonds and loans collateralized by the underlying properties for administration of the assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipSubordinateLoanAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Partnership subordinate loan amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipSubordinateLoanAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Subordinate Loan Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipSubordinateLoanAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership subordinate loan amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncomeTaxProvisionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Provision [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncomeTaxProvisionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Provision [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_IncomeTaxProvisionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Income tax provision.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfRelatedPartiesReflectedInPartnershipsConsolidatedFinancialStatementsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Transactions with Related Parties Reflected in the Partnership's Consolidated Financial Statements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfRelatedPartiesReflectedInPartnershipsConsolidatedFinancialStatementsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Related Parties Reflected In Partnerships Consolidated Financial Statements Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfRelatedPartiesReflectedInPartnershipsConsolidatedFinancialStatementsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of related parties reflected in partnerships consolidated financial statements.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentForAdministrativeFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Administrative fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentForAdministrativeFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment for Administrative Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Sale of Real Estate Held-for-investment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale, Real Estate, Held-for-Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceed sale of real assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PreviouslySoldInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Previously sold investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PreviouslySoldInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Previously Sold Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SOFR [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidatedEntitiesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidated Entities [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total income tax expense (benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Income tax benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AllowanceForCreditLossesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AllowanceForCreditLossesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Credit Losses [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AllowanceForCreditLossesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtViettiSeriesTwoThousandTwentyTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The park at vietti - series two thousand twenty two a.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtViettiSeriesTwoThousandTwentyTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Park At Vietti - Series Two Thousand Twenty Two A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheParkAtViettiSeriesTwoThousandTwentyTwoAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">The Park at Vietti - Series 2022A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentOfPrincipalInYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Financing Maturities Repayment Of Principal In Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentOfPrincipalInYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term debt financing provided through the securitization of tax-exempt mortgage revenue bonds maturing in the second fiscal year following the latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtFinancingMaturitiesRepaymentOfPrincipalInYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Limited Partners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAllocatedToLimitedPartners_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Allocated to Limited Partners</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average number of BUCs outstanding, diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageLimitedPartnershipUnitsOutstandingDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Limited Partnership Units Outstanding, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRedemptionPrincipalPaydownApplied_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Redemption Principal Paydown Applied</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRedemptionPrincipalPaydownApplied_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument redemption principal paydown applied.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentRedemptionPrincipalPaydownApplied_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal Paydown Applied</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements and redemptions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Settlements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share Based Compensation Arrangement By Share Based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable Mortgage Revenue Bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Taxable Mortgage Revenue Bonds (Reported Within Other Assets) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Common Stock, Units Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property loans outstanding principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property loans (Note 6)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Property loan receivable, outstanding balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoanReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loan receivable, gross - Amount before allowance of loans held in portfolio. Includes principal only.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupClassificationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Classification [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BellevueWaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bellevue, WA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BellevueWaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bellevue, WA [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BellevueWaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bellevue, WA.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentsForPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Advanced additional funds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentsForPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Advances on property loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentsForPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments For Property Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PaymentsForPropertyLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments for Property loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation Items [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ConsolidationItemsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consolidation Items</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Mortgage Revenue Bond [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable mortgage revenue bond.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WindsorShoresApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Windsor shores apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WindsorShoresApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Windsor Shores Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WindsorShoresApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Windsor Shores Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WindsorShoresApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Windsor Shores [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneAtCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Freestone at Cresta Bella.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FreestoneAtCrestaBellaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Freestone At Cresta Bella [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentMaturityMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stated Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentMaturityMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maturity Month And Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DebtInstrumentMaturityMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt instrument maturity month and year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LimitedPartnerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Limited Partner [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LimitedPartnerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Limited Partner [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MFPropertiesSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">MF Properties [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MFPropertiesSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">MF Properties Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MFPropertiesSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">M F Properties Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MFPropertiesSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">MF properties segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Granted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ChangeInPreferredReturnReceivableFromUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Change In Preferred Return Receivable From Unconsolidated Entity, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ChangeInPreferredReturnReceivableFromUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in preferred return receivable from unconsolidated entities, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ChangeInPreferredReturnReceivableFromUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change In Preferred Return Receivable From Unconsolidated Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ChangeInPreferredReturnReceivableFromUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in preferred return receivable from unconsolidated entity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPropertyLoansPaidDownOrRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Property Loans Paid Down or Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ScheduleOfPropertyLoansPaidDownOrRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of property loans paid down or redeemed.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceApartmentsSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Willow Place Apartments Supplemental [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceApartmentsSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Willow Place Apartments Supplemental [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowPlaceApartmentsSupplementalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Willow place apartments supplemental.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipInvestmentMaturityMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Investment Maturity Month And Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipInvestmentMaturityMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Partnership investment, maturity month and year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipInvestmentMaturityMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateCapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Cap Agreements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateCapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Cap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetImpairmentOfSecuritiesGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Impairment Of Securities Gain Loss Included In Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetImpairmentOfSecuritiesGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset impairment of securities gain loss included in earnings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetImpairmentOfSecuritiesGainLossIncludedInEarnings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total gain (losses) Included in earnings (provision for credit losses)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsGovernmentalIssuerLoansInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Partnership's GIL Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsGovernmentalIssuerLoansInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of Partnerships Governmental Issuer Loans Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WeightedAverageFixedRatePaidAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Fixed Rate Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WeightedAverageFixedRatePaidAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Fixed Rate Paid [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WeightedAverageFixedRatePaidAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted Average Fixed Rate Paid.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred income tax benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Income Tax Expense (Benefit), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWilcrestSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar At Wilcrest Series A.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWilcrestSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Wilcrest Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtWilcrestSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at Wilcrest - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SolanoVistaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Solano Vista [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SolanoVistaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Solano Vista [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SolanoVistaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Solano vista.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TemporaryEquityRedemptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earliest Redemption Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TemporaryEquityRedemptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity Redemption Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TemporaryEquityRedemptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Temporary equity redemption date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TemporaryEquityRedemptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Redemption date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateLoanCategoryDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateLoanCategoryDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Loan Category [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear3_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear3_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, Weighted Average Fixed Interest Rate, Year 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear3_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Vested</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vested unvested restricted units awards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateRedemptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of MRB Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateRedemptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bonds On Real Estate Redemptions Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsOnRealEstateRedemptionsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bonds on real estate, redemptions.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentInterestRatePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment interest rate period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentInterestRatePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitment Interest Rate Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentInterestRatePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest rate period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Diluted, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BUC holders' interest in net income (loss) per BUC, diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Revenue Bonds and Taxable Mortgage Revenue Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage revenue bonds and taxable mortgage revenue bonds.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfVariableInterestEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Variable Interest Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfVariableInterestEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Variable Interest Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfVariableInterestEntities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The number of variable interest entities owned.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TomballTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tomball TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TomballTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tomball T X [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TomballTXMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tomball T X.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnership Reportable Segment Information</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Segment Reporting Information, by Segment [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating Segments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingSegmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Segments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermPurchaseCommitmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long Term Purchase Commitment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermPurchaseCommitmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Purchase Commitment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment Interest Rate Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentInterestRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond Purchase Commitment Interest Rate Percentage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateRedemptionPremiumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage loans on Real Estate, Redemption Premium Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateRedemptionPremiumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage loans on real estate, redemption premium amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MortgageLoansOnRealEstateRedemptionPremiumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redemption premium amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentCommitmentExecutedMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Month Commitment Executed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentCommitmentExecutedMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Commitment Executed Month</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentCommitmentExecutedMonth_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment commitment executed month.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WeightedAverageEffectiveYield_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average effective yield</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WeightedAverageEffectiveYield_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted Average Effective Yields</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WeightedAverageEffectiveYield_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Effective Yield</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WeightedAverageEffectiveYield_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted average effective yield.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardExpirationDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity incentive plan expired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtGulfgateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Concord at Gulfgate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtGulfgateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concord At Gulfgate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ConcordAtGulfgateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Concord at Gulfgate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentsInMortgageRevenueBondsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments In Mortgage Revenue Bonds [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_InvestmentsInMortgageRevenueBondsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investments in Mortgage Revenue Bonds [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision for loan losses expensed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanLossesExpensed_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Provision for credit losses (Note 10)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Restricted Cash and Cash Equivalents, Current, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash and Cash Equivalent, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThirdMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Series 2022A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThirdMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Third Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ThirdMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Third mortgage.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental Issuer Loans [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayerSeriesAT1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the Mayer Series A-T 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayerSeriesAT1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency at the Mayer Series A-T 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheMayerSeriesAT1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Mayer Series A-T [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_SC_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">SC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_SC_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_SC_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SOUTH CAROLINA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankUnitedNAAndBankersTrustCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">BankUnited, N.A. and Bankers Trust Company [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankUnitedNAAndBankersTrustCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">BankUnited N A And Bankers Trust Company [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankUnitedNAAndBankersTrustCompanyMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">BankUnited, N.A. and bankers trust Company.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GeneralMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GeneralMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">General [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GeneralMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility maximum borrowing capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTobTrustFinancingsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of TOB Trust Financings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTobTrustFinancingsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of TOB Trust Financings [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTobTrustFinancingsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary Of TOB trust financings.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entity, Not Primary Beneficiary [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableInterestEntityNotPrimaryBeneficiaryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non-Consolidated VIEs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtTheCrestSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At The Crest Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtTheCrestSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar at the crest series a.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtTheCrestSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at the Crest - Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_KissimmeeFloridaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Kissimmee FL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_KissimmeeFloridaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Kissimmee Florida [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_KissimmeeFloridaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Kissimmee Florida.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of investments in unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Investment In Unconsolidated Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfInvestmentInUnconsolidatedEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sale of investment in unconsolidated entity.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RepurchaseAgreementCounterpartyNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Counterparty Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityRedemptionPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Redemption Price per Unit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityRedemptionPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redemption Price per Unit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TemporaryEquityRedemptionPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Temporary Equity, Redemption Price Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtParkwayMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at the Parkway [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtParkwayMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Parkway [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtParkwayMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar at the Parkway.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateFloorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Floor [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateFloorMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Floor Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RecourseStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Recourse Status [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BuildingsImprovementsAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Buildings and Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BuildingsImprovementsAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Buildings Improvements And Equipment Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BuildingsImprovementsAndEquipmentGross_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gross amount, at the balance sheet date, of long-lived physical assets used in the normal conduct of business and not intended for resale. This can include buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Governmental Issuer Loans Held in Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans Held in Trust [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoansHeldInTrustMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans held in trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Secured lines of credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lines of Credit, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteesExpirationYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Guaranty Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteesExpirationYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Guarantees Expiration Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GuaranteesExpirationYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Guarantees expiration year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfSecurititesHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of securitites held in trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfSecurititesHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Securitites Held in Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfSecurititesHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of securities held in trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Trust2021Xf2926OasisAtTwinLakesPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2926 - Oasis at Twin Lakes property loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Trust2021Xf2926OasisAtTwinLakesPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trust 2021-XF2926 - Oasis at Twin Lakes Property Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_Trust2021Xf2926OasisAtTwinLakesPropertyLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Trust 2021-XF2926 - Oasis at twin lakes property loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateNamePropertyTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreenvilleTx1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greenville TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreenvilleTx1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Greenville TX1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GreenvilleTx1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Greenville TX1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting Information [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Information [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanAntonioTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">San Antonio, TX [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanAntonioTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">San Antonio Texas [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SanAntonioTexasMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">San Antonio, Texas [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtMayerMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At Mayer MRBs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtMayerMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency At Mayer MRBs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtMayerMrbsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Mayer MRBs [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at the Entrepreneur - Series J-4 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At The Entrepreneur J Four [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtTheEntrepreneurJFourMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at the entrepreneur j four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Derivative, Fair Value Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative Liability, Fair Value, Gross Liability, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative, Fair Value Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Subject to Master Netting Arrangement, before Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Derivative instruments at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaHeightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Magnolia heights.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaHeightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Magnolia Heights [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MagnoliaHeightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Magnolia Heights [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvailableForSaleSecuritiesFairValueDisclosureHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Mortgage revenue bonds held in trust, at fair value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvailableForSaleSecuritiesFairValueDisclosureHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage revenue bonds held in trust, at fair value (Note 4)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvailableForSaleSecuritiesFairValueDisclosureHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Fair Value Disclosure Held In Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvailableForSaleSecuritiesFairValueDisclosureHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">This element represents the portion of the balance sheet assertion valued at fair value by the entity, which is held in a mortgage-backed security, whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may by used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Osprey Village GIL.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Osprey Village GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OspreyVillageGilMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Osprey Village GIL [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Real estate assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate assets, net (Note 8)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Property, Plant and Equipment, Net, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Property, Plant and Equipment, Net, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net real estate assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ocotillo Springs Series A.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ocotillo Springs Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_OcotilloSpringsSeriesAMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ocotillo Springs Series A [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar at the Crest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar At Crest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarAtCrestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar at the Crest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankersTrustNonOperatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bankers Trust Non-operating [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankersTrustNonOperatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bankers Trust Non Operating [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BankersTrustNonOperatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bankers trust non-operating.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Average Notional Amount, Year 5</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average Notional Amount, Year 5</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear5_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AdvancesOnTaxableGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Advances on taxable governmental issuer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AdvancesOnTaxableGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advances On Taxable Governmental Issuer Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AdvancesOnTaxableGovernmentalIssuerLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Advances on taxable governmental issuer loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Including Disposal Group and Discontinued Operations, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash, cash equivalents and restricted cash at beginning of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash, cash equivalents and restricted cash at end of period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsCarryingValueByOriginationYearGroupedByRiskRatingTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Partnerships Carrying Value by Acquisition Year Grouped by Risk Rating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsCarryingValueByOriginationYearGroupedByRiskRatingTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of partnerships carrying value by origination year grouped by risk rating.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfPartnershipsCarryingValueByOriginationYearGroupedByRiskRatingTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Partnerships Carrying Value By Origination Year Grouped By Risk Rating [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RestrictedUnitholdersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Unitholders [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RestrictedUnitholdersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Unitholders [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_RestrictedUnitholdersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Restricted unitholders.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableMortgageRevenueBondsAndGovernmentalIssuerLoansAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Taxable MRB and GIL Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableMortgageRevenueBondsAndGovernmentalIssuerLoansAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Taxable Mortgage Revenue Bonds And Governmental Issuer Loans Acquired [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfTaxableMortgageRevenueBondsAndGovernmentalIssuerLoansAcquiredTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of taxable mortgage revenue bonds and governmental issuer loans acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConstructionLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Construction loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConstructionLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Construction Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, Weighted Average Fixed Interest Rate, Year 1</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOfAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hope of Avalon.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOfAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hope of Avalon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOfAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hope of Avalon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfAssetAtAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds From Sale Of Asset At Accrued Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfAssetAtAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds from sale of asset at accrued interest.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfAssetAtAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of asset at accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ProceedsFromSaleOfAssetAtAccruedInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Proceeds from sale of asset at par plus accrued interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfUnitsInRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfUnitsInRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfUnitsInRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Units in Real Estate Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WestsideVillageMarketMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Westside Village Market [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WestsideVillageMarketMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Westside Village Market [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WestsideVillageMarketMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Westside village market.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentToProvideMaximumFundingOfMRB_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitment to provide maximum funding of taxable MRB</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentToProvideMaximumFundingOfMRB_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitment To Provide Maximum Funding Of M R B</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_CommitmentToProvideMaximumFundingOfMRB_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commitment to provide maximum funding of MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpire-SeriesBB-4MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residency At Empire - Series BB-4 MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpire-SeriesBB-4MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Residency at Empire - Series BB-4 MRB.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_ResidencyAtEmpire-SeriesBB-4MRBMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residency at Empire - Series BB-4 MRB [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by (used in) financing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAverageRemainingMaturity1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative, Weighted Average Remaining Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAverageRemainingMaturity1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Average Remaining Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Adopted [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Market Rate Development Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove II [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove Two [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveTwoMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy grove two.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Secured Line Of Credit Facility [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredDebtMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Debt [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BridleRidgeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bridle Ridge [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BridleRidgeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bridle Ridge [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BridleRidgeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bridle Ridge.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear6_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Weighted Average Fixed Interest Rate, Year 6</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear6_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Derivative, Weighted Average Fixed Interest Rate, Year 6</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_DerivativeWeightedAverageFixedInterestRateYear6_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2031</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsWithFairValueHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable mortgage revenue bonds with fair value, held in trust.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsWithFairValueHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Mortgage Revenue Bonds With Fair Value, Held In Trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableMortgageRevenueBondsWithFairValueHeldInTrust_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable mortgage revenue bonds with fair value, held in trust</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MezzanineFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mezzanine financing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MezzanineFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mezzanine Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_MezzanineFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mezzanine Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TylerParkTownhomesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Tyler Park Townhomes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TylerParkTownhomesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tyler Park Townhomes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TylerParkTownhomesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tyler Park Townhomes [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TylerParkTownhomesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tyler park townhomes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Poppy Grove II [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Poppy Grove I I [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PoppyGroveIIMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Poppy Grove I I.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bond Purchase Commitment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bond Purchase Commitment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BondPurchaseCommitmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bond Purchase Commitment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate Assets Owned by Partnership</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRealEstatePropertiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Real Estate Properties [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoanOnRealEstateFinalMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Original Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoanOnRealEstateFinalMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Original Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoanOnRealEstateFinalMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForAdvanceToAffiliate_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Contributions to unconsolidated entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForAdvanceToAffiliate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Advance to Affiliate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Income Location, Balance [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from operating activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfInvestmentUnitsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfInvestmentUnitsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Investment Units Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_NumberOfInvestmentUnitsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of investment units sold.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on sale of real estate assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on sale of real estate assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sale of Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Costs related to sale which reduced Partnership's gain on sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateDescriptionTypeOfPropertyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate, Type of Property [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheResidencyAtMayer1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The Residency At Mayer 1.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheResidencyAtMayer1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">The Residency At Mayer 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TheResidencyAtMayer1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trust 2021-XF2939 - Residency at the Mayer Series A-T</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansBondsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Taxable governmental issuer loans bonds commitment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansBondsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxable Governmental Issuer Loans Bonds Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_TaxableGovernmentalIssuerLoansBondsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Taxable GIL, Total Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Governmental Issuer Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Governmental issuer loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Governmental issuer loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GovernmentalIssuerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Governmental issuer loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LindoPaseoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lindo Paseo LLC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LindoPaseoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lindo Paseo L L C [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LindoPaseoLLCMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lindo Paseo LLC.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SummaryOfInvestmentHoldingsScheduleOfInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Investments in Unconsolidated Entities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SummaryOfInvestmentHoldingsScheduleOfInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Investment Holdings, Schedule of Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowRunMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Willow Run [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowRunMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Willow Run [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_WillowRunMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Willow run.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residential Properties [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residential Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gain on sale of real assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gains (Losses) on Sales of Investment Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolio2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Avistar (June 2013 Portfolio) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolio2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Avistar (June 2013 Portfolio) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolio2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Avistar Portfolio2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AvistarPortfolio2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Avistar Portfolio-2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansReceivableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loans receivable.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansReceivableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loans Receivable [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansReceivableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property loans:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansReceivableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Property loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenues:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Revenues:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnershipIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnershipIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PartnershipIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income (loss) available to Partners allocated to:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfRangeOfEffectiveYieldsAndWeightedAverageEffectiveYieldsOfPartnershipsInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Range of Effective Yields and Weighted Average Effective Yields of Partnership's Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfRangeOfEffectiveYieldsAndWeightedAverageEffectiveYieldsOfPartnershipsInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Range of Effective Yields and Weighted Average Effective Yields of Partnership's Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_SummaryOfRangeOfEffectiveYieldsAndWeightedAverageEffectiveYieldsOfPartnershipsInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of range of effective yields and weighted average effective yields of partnership's investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">loan maturity date.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan maturity date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_LoanMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Loans Net Of Loan Loss Allowance [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Loans Net Of Loan Loss Allowance [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PropertyLoansNetOfLoanLossAllowanceTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property loans, net of loan loss allowance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Hope on Avalon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hope On Avalon [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_HopeOnAvalonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Hope on avalon.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Investments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfMortgageBackedSecuritiesMBS_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sales of Mortgage-Backed Securities (MBS)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfMortgageBackedSecuritiesMBS_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Realized a gain on sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BrutonApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bruton Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BrutonApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bruton Apartments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_BrutonApartmentsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bruton apartments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Interest Entities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_VariableInterestEntitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Variable Interest Entities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total gain (losses) included in earnings (interest income and interest expense)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_PartnershipIncomeExpensesAndCashDistributionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Partnership Income Expenses And Cash Distributions [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_GatewayAndYarbroughPredevelopmentProjectMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Gateway and yarbrough predevelopment project.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="ghi_AverageNotionalAmountYear2_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Average Notional Amount, Year 2</link:label>
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  <xsd:element id="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsGILMember" name="TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAAndTwoThousandTwentyTwoBMember" name="LiveNineTwoNineSeriesTwoThousandTwentyTwoAAndTwoThousandTwentyTwoBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="ghi_ProceedsFromSaleOfBeneficialUnitCertificates" name="ProceedsFromSaleOfBeneficialUnitCertificates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
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  <xsd:element id="ghi_DebtFinancingTaxExemptInterestOnSeniorSecurities" name="DebtFinancingTaxExemptInterestOnSeniorSecurities" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ProceedsFromGovernmentalIssuerLoans" name="ProceedsFromGovernmentalIssuerLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
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  <xsd:element id="ghi_ConstructionCompletionDate" name="ConstructionCompletionDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
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  <xsd:element id="ghi_AcquisitionMember" name="AcquisitionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WeightedAverageFixedRatePaidAbstract" name="WeightedAverageFixedRatePaidAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AverageNotionalAmountYear5" name="AverageNotionalAmountYear5" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansTable" name="GovernmentalIssuerLoansTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="ghi_LeaseTransactionAnnualIncrementPercentageInRent" name="LeaseTransactionAnnualIncrementPercentageInRent" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_CapitalProvidedForJointVenture" name="CapitalProvidedForJointVenture" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_IncreaseInPartnershipsCommitmentAmount" name="IncreaseInPartnershipsCommitmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_ResidencyAtTheEntrepreneurMrbsAndResidencyAtMayerMrbsAndResidencyAtTheEntrepreneurMrbsMember" name="ResidencyAtTheEntrepreneurMrbsAndResidencyAtMayerMrbsAndResidencyAtTheEntrepreneurMrbsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
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  <xsd:element id="ghi_AventineApartmentsMember" name="AventineApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SaintPaulMinnesotaMember" name="SaintPaulMinnesotaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HelotesTXMember" name="HelotesTXMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VariableInterestEntityMaximumLossExposureFundingCommitmentsAmount" name="VariableInterestEntityMaximumLossExposureFundingCommitmentsAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_CrossingAtOneThousandFourHundredFifteenMember" name="CrossingAtOneThousandFourHundredFifteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GreenvilleTx1Member" name="GreenvilleTx1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ChangeInPreferredReturnReceivableFromUnconsolidatedEntity" name="ChangeInPreferredReturnReceivableFromUnconsolidatedEntity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MinimumConsolidatedTangibleNetWorth" name="MinimumConsolidatedTangibleNetWorth" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_AccruedInterestReceivable" name="AccruedInterestReceivable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ResidencyAtTheEntrepreneurJTwoMember" name="ResidencyAtTheEntrepreneurJTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WellspringApartmentsMember" name="WellspringApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheCenturionFoundationMember" name="TheCenturionFoundationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WoodingtonGardensApartmentsSeriesA2Member" name="WoodingtonGardensApartmentsSeriesA2Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtFinancingLiabilitiesNet" name="DebtFinancingLiabilitiesNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MonthAndYearOfPropertyLoanRepaid" name="MonthAndYearOfPropertyLoanRepaid" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_FifteenWestApartmentsMember" name="FifteenWestApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FreestoneLaderaMember" name="FreestoneLaderaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisUnrealizedGainLossIncludedInEarnings" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisUnrealizedGainLossIncludedInEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlaceGILMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlaceGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveIIIMember" name="PoppyGroveIIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LesseeOperatingLeaseMinimumAnnualPaymentDue" name="LesseeOperatingLeaseMinimumAnnualPaymentDue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_ContingentInterestIncomeMember" name="ContingentInterestIncomeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ProceedsFromSaleOfSuitsOnPaseoMfProperty" name="ProceedsFromSaleOfSuitsOnPaseoMfProperty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_BasisOfPresentationAbstract" name="BasisOfPresentationAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetProvisionForCreditGainLossIncludedInEarnings" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetProvisionForCreditGainLossIncludedInEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_DebtInstrumentMaturityYear" name="DebtInstrumentMaturityYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SanAntonioTexasMember" name="SanAntonioTexasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_EarningsOrLossesFromInvestmentsInUnconsolidatedEntities" name="EarningsOrLossesFromInvestmentsInUnconsolidatedEntities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_PoppyGroveTaxableGILsMember" name="PoppyGroveTaxableGILsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WoodingtonGardensApartmentsMrbMember" name="WoodingtonGardensApartmentsMrbMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtTheMayer-SeriesMMRBMember" name="ResidencyAtTheMayer-SeriesMMRBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WillowRunMember" name="WillowRunMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageLoansOnRealEstateFaceAmountOfDiscountOfMortgages" name="MortgageLoansOnRealEstateFaceAmountOfDiscountOfMortgages" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity" name="GainOrLossOnSaleOfInvestmentInUnconsolidatedEntity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_FreestoneCrestaBellaMember" name="FreestoneCrestaBellaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OspreyVillageGilMember" name="OspreyVillageGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RedemptionOfMortgageRevenueBondsMember" name="RedemptionOfMortgageRevenueBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DecaturAngleMember" name="DecaturAngleMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ExchangeOfRedeemablePreferredUnits" name="ExchangeOfRedeemablePreferredUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_AverageNotionalAmountYear8" name="AverageNotionalAmountYear8" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_SouthPointeApartmentsSeriesATOBTrustsSecuritizationMember" name="SouthPointeApartmentsSeriesATOBTrustsSecuritizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarAtCrestMember" name="AvistarAtCrestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RichlandCountySCMember" name="RichlandCountySCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveIIMember" name="PoppyGroveIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BankUnitedGeneralMember" name="BankUnitedGeneralMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvailableForSaleSecuritiesFairValueDisclosureHeldInTrust" name="AvailableForSaleSecuritiesFairValueDisclosureHeldInTrust" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_SeasonsAtSimiValleyMember" name="SeasonsAtSimiValleyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VillageAtAvalonMember" name="VillageAtAvalonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveIiiGilMember" name="PoppyGroveIiiGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheResidencyAtMayer1Member" name="TheResidencyAtMayer1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvailableForSaleSecurityAndPropertyLoanReceivableMaximumExposure" name="AvailableForSaleSecurityAndPropertyLoanReceivableMaximumExposure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_BankUnitedNAAndBankersTrustCompanyMember" name="BankUnitedNAAndBankersTrustCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OpportunitySouthCarolinaMember" name="OpportunitySouthCarolinaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ThePalmsAtPremierParkApartmentsMember" name="ThePalmsAtPremierParkApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtTheMayerMember" name="ResidencyAtTheMayerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PartnershipSubordinateLoanAmount" name="PartnershipSubordinateLoanAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PrincipalPaymentsReceivedOnMortgageRevenueBondsAndContingentInterest" name="PrincipalPaymentsReceivedOnMortgageRevenueBondsAndContingentInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_LindoPaseoLLCMember" name="LindoPaseoLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtTheEntrepreneurMrbsMember" name="ResidencyAtTheEntrepreneurMrbsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PartnershipMaturityExtendedDate" name="PartnershipMaturityExtendedDate" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearThree" name="DebtFinancingMaturitiesRepaymentsOfPrincipalInYearThree" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_CentennialCrossingsOneMember" name="CentennialCrossingsOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OcotilloSpringsMember" name="OcotilloSpringsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SummaryOfTaxableGovernmentalIssuerLoanAcquiredTableTextBlock" name="SummaryOfTaxableGovernmentalIssuerLoanAcquiredTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_GainsLossesRealizedUnrealizedAbstract" name="GainsLossesRealizedUnrealizedAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SecuredLineOfCredit" name="SecuredLineOfCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_Live929ApartmentsSeries2022BMember" name="Live929ApartmentsSeries2022BMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AdvancesOnGovernmentalIssuerLoan" name="AdvancesOnGovernmentalIssuerLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_FreestoneGreenvilleMember" name="FreestoneGreenvilleMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NonperformingMember" name="NonperformingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ExtendedMaturityPeriod" name="ExtendedMaturityPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_GreensHoldCoMember" name="GreensHoldCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesJThreeMortgageMember" name="SeriesJThreeMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NumberOfRentalUnitsFinancedByMortgageRevenueBonds" name="NumberOfRentalUnitsFinancedByMortgageRevenueBonds" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VariableNotesMember" name="VariableNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtFinancingCurrentMaturities" name="DebtFinancingCurrentMaturities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_GeneralMember" name="GeneralMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtTheMayerSeriesATMember" name="ResidencyAtTheMayerSeriesATMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ProceedsFromLiquidation" name="ProceedsFromLiquidation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_EquityIncentivePlanMember" name="EquityIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FourVantagePropertiesAndOneFreestonePropertyMember" name="FourVantagePropertiesAndOneFreestonePropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LutheranGardensMember" name="LutheranGardensMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondsMember" name="MortgageRevenueBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SouthparkMrbMember" name="SouthparkMrbMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarAtWoodHollowSeriesAMember" name="AvistarAtWoodHollowSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ProceedsFromPropertyLoans" name="ProceedsFromPropertyLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_SaleOfRealEstateOwnershipInterestPercentage" name="SaleOfRealEstateOwnershipInterestPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_MontecitoAtWilliamsRanchApartmentsMember" name="MontecitoAtWilliamsRanchApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GreystoneSelectMember" name="GreystoneSelectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LovelandCOMember" name="LovelandCOMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MonthAndYearOfPropertyLoanRedeemed" name="MonthAndYearOfPropertyLoanRedeemed" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoanMember" name="TaxableGovernmentalIssuerLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear2" name="DerivativeWeightedAverageFixedInterestRateYear2" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AvistarAtParkwayMember" name="AvistarAtParkwayMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CommitmentToProvideMaximumFundingOfMRB" name="CommitmentToProvideMaximumFundingOfMRB" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PartnershipsCommitmentsAmount" name="PartnershipsCommitmentsAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_KindredApartmentsMember" name="KindredApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DeferredFinancingCostsFinancedThroughAccountsPayable" name="DeferredFinancingCostsFinancedThroughAccountsPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_CommitmentsAndOtherGuaranteesLineItems" name="CommitmentsAndOtherGuaranteesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NumberOfAvailableForSaleSecurities" name="NumberOfAvailableForSaleSecurities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_YearOfGuaranteeAgreementTermEnding" name="YearOfGuaranteeAgreementTermEnding" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AvistarOnHillsMember" name="AvistarOnHillsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableMortgageRevenueBondsCommitment" name="TaxableMortgageRevenueBondsCommitment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_InvestmentsInMortgageRevenueBondsAbstract" name="InvestmentsInMortgageRevenueBondsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageLoansOnRealEstatePrincipalOutstandingAmountOfSales" name="MortgageLoansOnRealEstatePrincipalOutstandingAmountOfSales" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ConstructionLoanGuaranteePercentageUponOccurrenceOfFraudBorrowerWillfulMisconductAndBankruptcy" name="ConstructionLoanGuaranteePercentageUponOccurrenceOfFraudBorrowerWillfulMisconductAndBankruptcy" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DeferredIncomeTaxExpenseBenefitAndIncomeTaxPayableReceivables" name="DeferredIncomeTaxExpenseBenefitAndIncomeTaxPayableReceivables" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_SummaryOfPartnershipsGovernmentalIssuerLoansInvestmentsTableTextBlock" name="SummaryOfPartnershipsGovernmentalIssuerLoansInvestmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ResidencyAtEmpireBbTwoMember" name="ResidencyAtEmpireBbTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesPreferredUnitsIssuedOnMarchTwoThousandTwentyFiveMember" name="SeriesPreferredUnitsIssuedOnMarchTwoThousandTwentyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeasonsSanJuanCapistranoMember" name="SeasonsSanJuanCapistranoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AmortizationOfBondDiscountPremiumAndAcquisitionFee" name="AmortizationOfBondDiscountPremiumAndAcquisitionFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_SeriesA1PreferredUnitsMember" name="SeriesA1PreferredUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SummaryOfSignificantAccountingPoliciesTable" name="SummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtFinancingCarryingValue" name="DebtFinancingCarryingValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PoppyGroveThreeMember" name="PoppyGroveThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyXFTwoThousandNineHundredAndEightCentennialCrossingsPropertyLoanMember" name="TrustTwentyTwentyXFTwoThousandNineHundredAndEightCentennialCrossingsPropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtHuttoAndVantageAtCrestaBellaMember" name="VantageAtHuttoAndVantageAtCrestaBellaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ComptonCaMember" name="ComptonCaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MizuhoAndBarclaysMember" name="MizuhoAndBarclaysMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PropertyLoansMember" name="PropertyLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VineyardGardensMember" name="VineyardGardensMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CommitmentDate" name="CommitmentDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_OasisAtTwinLakesMember" name="OasisAtTwinLakesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GainLossFromInvestmentsInUnconsolidatedEntities" name="GainLossFromInvestmentsInUnconsolidatedEntities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_AffordableMultifamilyMortgageRevenueBondAndGovernmentalIssuerLoanInvestmentsSegmentMember" name="AffordableMultifamilyMortgageRevenueBondAndGovernmentalIssuerLoanInvestmentsSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyTwoXfThreeThousandAndFiftyNineMember" name="TrustTwentyTwentyTwoXfThreeThousandAndFiftyNineMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AverageNotionalAmountYear6" name="AverageNotionalAmountYear6" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_MortgageLoansOnRealEstateDiscountPercentageOfMortgages" name="MortgageLoansOnRealEstateDiscountPercentageOfMortgages" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ResidencyAtTheEntrepreneurJThreeMember" name="ResidencyAtTheEntrepreneurJThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember" name="MortgageRevenueBondAndTaxableMortgageRevenueBondCommitmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OspreyVillageSupplementalAndWillowPlaceApartmentsMember" name="OspreyVillageSupplementalAndWillowPlaceApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DecreaseInShortTermInterestRatesInBasisPoints" name="DecreaseInShortTermInterestRatesInBasisPoints" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_BrutonApartmentsMember" name="BrutonApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarPortfolioMember" name="AvistarPortfolioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember" name="SeniorsAndSkilledNursingMortgageRevenueBondInvestmentsSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FreestoneAtGreeleyMember" name="FreestoneAtGreeleyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHopeOnAvalonTaxableGilMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHopeOnAvalonTaxableGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MaryaliceCircleMember" name="MaryaliceCircleMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CashPaidInLieuOfFractionalBeneficialUnitCertificates" name="CashPaidInLieuOfFractionalBeneficialUnitCertificates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MonthAndYearOfPrincipalAndAccruedInterestRedeemed" name="MonthAndYearOfPrincipalAndAccruedInterestRedeemed" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_MaturityOfConstructionLoan" name="MaturityOfConstructionLoan" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VantageAtCoventryMember" name="VantageAtCoventryMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansDisclosureTextBlock" name="GovernmentalIssuerLoansDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_CentennialCrossingsGilMember" name="CentennialCrossingsGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ScheduleOfPropertyLoansPaidDownOrRedeemed" name="ScheduleOfPropertyLoansPaidDownOrRedeemed" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_BridleRidgeMember" name="BridleRidgeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TOBTrustsSecuritizationMember" name="TOBTrustsSecuritizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PaymentOfOfferingCostsRelatedToSaleOfBeneficialUnitCertificates" name="PaymentOfOfferingCostsRelatedToSaleOfBeneficialUnitCertificates" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_BondPurchaseCommitmentMember" name="BondPurchaseCommitmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HeightsAtHeightsAtFiveHundredFifteenMember" name="HeightsAtHeightsAtFiveHundredFifteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FixedNotesMember" name="FixedNotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtMurfreesboroMember" name="VantageAtMurfreesboroMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesA1PreferredUnitsIssuedOnJuneTwoThousandTwentyThreeMember" name="SeriesA1PreferredUnitsIssuedOnJuneTwoThousandTwentyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesBPreferredUnitsMember" name="SeriesBPreferredUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansLineItems" name="GovernmentalIssuerLoansLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ScheduleOfTermsOfPartnershipTaxableMortgageRevenueBondsInvestmentsTableTextBlock" name="ScheduleOfTermsOfPartnershipTaxableMortgageRevenueBondsInvestmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_MaximumBalanceOfMRBStabilization" name="MaximumBalanceOfMRBStabilization" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear6" name="DerivativeWeightedAverageFixedInterestRateYear6" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SandyCreekApartments2Member" name="SandyCreekApartments2Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HeritageSquareMember" name="HeritageSquareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveIiGilMember" name="PoppyGroveIiGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LexingtonSouthCarolinaMember" name="LexingtonSouthCarolinaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GatewayVillageMember" name="GatewayVillageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CentennialCrossingsGovernmentalIssuerLoanMember" name="CentennialCrossingsGovernmentalIssuerLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TOBTrustMember" name="TOBTrustMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BoerneTXMember" name="BoerneTXMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BeneficialUnitCertificatesPolicyTextBlock" name="BeneficialUnitCertificatesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_CommitmentInterestRatePeriod" name="CommitmentInterestRatePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AnaheimAndWalnutMember" name="AnaheimAndWalnutMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WoodingtonGardensSeriesAOneMember" name="WoodingtonGardensSeriesAOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember" name="MortgageRevenueBondAndTaxableMortgageRevenueBondInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PropertyLoansNetOfLoanLossAllowanceLineItems" name="PropertyLoansNetOfLoanLossAllowanceLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LincolnNebraskaMember" name="LincolnNebraskaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MontevistaMember" name="MontevistaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LiborMember" name="LiborMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeniorAcquisitionFinancingMember" name="SeniorAcquisitionFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFive" name="DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_VariableInterestEntitiesAbstract" name="VariableInterestEntitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_InvestmentOwnedMonthSold" name="InvestmentOwnedMonthSold" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_HuttoTXMember" name="HuttoTXMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BryanTexasMember" name="BryanTexasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SummaryOfTaxableMortgageRevenueBondsAcquiredTableTextBlock" name="SummaryOfTaxableMortgageRevenueBondsAcquiredTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ProceedsFromSaleOfAssetAtAccruedInterest" name="ProceedsFromSaleOfAssetAtAccruedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_TheParkAtViettiSeriesTwoThousandTwentyTwoAMember" name="TheParkAtViettiSeriesTwoThousandTwentyTwoAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BondPurchaseMaximumCommitmentAmount" name="BondPurchaseMaximumCommitmentAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_MizuhoCapitalMarketsLLCMember" name="MizuhoCapitalMarketsLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HarmonyTerraceMember" name="HarmonyTerraceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableMortgageRevenueBondInitialPrincipalAcquired" name="TaxableMortgageRevenueBondInitialPrincipalAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_MortgageRevenueBondsOnRealEstateAcquisitionsTableTextBlock" name="MortgageRevenueBondsOnRealEstateAcquisitionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ElkGroveCaMember" name="ElkGroveCaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NumberOfInvestmentUnitsSold" name="NumberOfInvestmentUnitsSold" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SanVicenteMember" name="SanVicenteMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AllowanceForCreditLossesPolicyTextBlock" name="AllowanceForCreditLossesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SummaryOfRelatedPartiesReflectedInPartnershipsConsolidatedFinancialStatementsTableTextBlock" name="SummaryOfRelatedPartiesReflectedInPartnershipsConsolidatedFinancialStatementsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VantageAtGermantownMember" name="VantageAtGermantownMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MagnoliaHeightsMember" name="MagnoliaHeightsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FourtyOnColonyMember" name="FourtyOnColonyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageLoanOnRealEstatePropertyLocation" name="MortgageLoanOnRealEstatePropertyLocation" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_BulverdeTXMember" name="BulverdeTXMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AllowanceForCreditLossOnFinancingReceivablesTableTextBlock" name="AllowanceForCreditLossOnFinancingReceivablesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AcquisitionOfAndAdvancesOnTaxableMortgageRevenueBonds" name="AcquisitionOfAndAdvancesOnTaxableMortgageRevenueBonds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_InvestmentOwnedAcquisitionMonthYear" name="InvestmentOwnedAcquisitionMonthYear" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMagnoliaHeightsPropertyLoanMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMagnoliaHeightsPropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ConsolidatedStatementsOfComprehensiveIncomeAbstract" name="ConsolidatedStatementsOfComprehensiveIncomeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AgapeHelotesSeriesA-1MRBMember" name="AgapeHelotesSeriesA-1MRBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AverageNotionalAmountYear9" name="AverageNotionalAmountYear9" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_AdvancesOnTaxableGovernmentalIssuerLoan" name="AdvancesOnTaxableGovernmentalIssuerLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MortgagesPayableAndOtherSecuredFinancingMember" name="MortgagesPayableAndOtherSecuredFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_InvestmentMortgagePlacementFeesEarned" name="InvestmentMortgagePlacementFeesEarned" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIIGILMember" name="TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIIGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CompanionAtThornhillApartmentsMRBMember" name="CompanionAtThornhillApartmentsMRBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MckinneyFallsTxMember" name="MckinneyFallsTxMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesHMortgageMember" name="SeriesHMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear5" name="DerivativeWeightedAverageFixedInterestRateYear5" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_FixedMFortyFiveMember" name="FixedMFortyFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyThreeXFThreeThousandAndSeventySevenMember" name="TrustTwentyTwentyThreeXFThreeThousandAndSeventySevenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WestsideVillageMarketMember" name="WestsideVillageMarketMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesAOneMortgageMember" name="SeriesAOneMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansCurrentInterestRatePercentage" name="GovernmentalIssuerLoansCurrentInterestRatePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour" name="LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PaymentsForPropertyLoans" name="PaymentsForPropertyLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PoppyGroveIMember" name="PoppyGroveIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GreensPropertyMember" name="GreensPropertyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TEBSResidualFinancingMember" name="TEBSResidualFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GuaranteeObligationsLoanBalancePercentage" name="GuaranteeObligationsLoanBalancePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_GreystoneManagerMember" name="GreystoneManagerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesHTMortgageMember" name="SeriesHTMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesJFourMortgageMember" name="SeriesJFourMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HardenRanchMember" name="HardenRanchMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NumberOfSecurititesHeldInTrust" name="NumberOfSecurititesHeldInTrust" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_LandHeldForDevelopmentMember" name="LandHeldForDevelopmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CourtyardMember" name="CourtyardMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarOnTheHillsSeriesAMember" name="AvistarOnTheHillsSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ConstructionLendingJVMember" name="ConstructionLendingJVMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpenses" name="HeldToMaturitySecuritiesProvisionForLoanLossesExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_CommitmentToProvideAdditionalFundingOfMrb" name="CommitmentToProvideAdditionalFundingOfMrb" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_ReserveForCreditLossesOnUnfundedCommitments" name="ReserveForCreditLossesOnUnfundedCommitments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoanHeldInTrust" name="TaxableGovernmentalIssuerLoanHeldInTrust" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ConcordAtLittleYorkMember" name="ConcordAtLittleYorkMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TriangleSquarePredevelopmentProjectMember" name="TriangleSquarePredevelopmentProjectMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VillageAtAvalonMrbMember" name="VillageAtAvalonMrbMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHilltopAtSignalHillsPropertyLoanMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixHilltopAtSignalHillsPropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SummaryOfPartnershipsCarryingValueByOriginationYearGroupedByRiskRatingTableTextBlock" name="SummaryOfPartnershipsCarryingValueByOriginationYearGroupedByRiskRatingTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_BaltimoreMdMember" name="BaltimoreMdMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CumulativeEffectOfAccountingChange" name="CumulativeEffectOfAccountingChange" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_JointVentureInvestmentsMember" name="JointVentureInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OmahaNeMember" name="OmahaNeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MurfreesboroTNMember" name="MurfreesboroTNMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtTomballMember" name="VantageAtTomballMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtInstrumentPaymentOfExtensionFee" name="DebtInstrumentPaymentOfExtensionFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_AverageNotionalAmountYear7" name="AverageNotionalAmountYear7" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ProceedsFromSaleOfTaxableGovernmentalIssuerLoanToJointVenture" name="ProceedsFromSaleOfTaxableGovernmentalIssuerLoanToJointVenture" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_AssetsPercentage" name="AssetsPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AvistarAtWilcrestMember" name="AvistarAtWilcrestMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HopeOnBroadwayGilMember" name="HopeOnBroadwayGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ProceedsFromSaleOfGovernmentalIssuerLoanToJointVenture" name="ProceedsFromSaleOfGovernmentalIssuerLoanToJointVenture" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_TemporaryEquityRedemptionDate" name="TemporaryEquityRedemptionDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RedeemablePreferredUnitsDisclosureTextBlock" name="RedeemablePreferredUnitsDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFour" name="DebtFinancingMaturitiesRepaymentsOfPrincipalInYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetImpairmentOfSecuritiesGainLossIncludedInEarnings" name="FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetImpairmentOfSecuritiesGainLossIncludedInEarnings" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_InvestmentOwnedUnrecognizedUnrealizedDepreciations" name="InvestmentOwnedUnrecognizedUnrealizedDepreciations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_ResidencyAtTheEntrepreneurJOneMember" name="ResidencyAtTheEntrepreneurJOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoan" name="TaxableGovernmentalIssuerLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_BankersTrustNonOperatingMember" name="BankersTrustNonOperatingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineOcotilloSpringsMember" name="TrustTwentyTwentyOneXFTwoThousandNineHundredAndThirtyNineOcotilloSpringsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtEmpireMember" name="ResidencyAtEmpireMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FairValueMeasurementsAbstract" name="FairValueMeasurementsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LoanFinancingBasisSpreadOnVariableRate" name="LoanFinancingBasisSpreadOnVariableRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansAllowanceForCreditLosses" name="GovernmentalIssuerLoansAllowanceForCreditLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_ConstructionLoanMaximumAvailableAmount" name="ConstructionLoanMaximumAvailableAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoansInitialPrincipalAcquired" name="TaxableGovernmentalIssuerLoansInitialPrincipalAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ReclassificationOfGainOnSaleOfMortgageRevenueBondToNetIncome" name="ReclassificationOfGainOnSaleOfMortgageRevenueBondToNetIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PropertyLoansReceivableAbstract" name="PropertyLoansReceivableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_IncomeTaxProvisionLineItems" name="IncomeTaxProvisionLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveOneMember" name="PoppyGroveOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BellevueWaMember" name="BellevueWaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CapitalUnitsRestrictedAndUnrestrictedMember" name="CapitalUnitsRestrictedAndUnrestrictedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ScheduleOfIssuancePartnershipRedeemablePreferredUnitsTableTextBlock" name="ScheduleOfIssuancePartnershipRedeemablePreferredUnitsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_OcotilloSpringsSeriesAMember" name="OcotilloSpringsSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondRedeemedPercentageOfParValue" name="MortgageRevenueBondRedeemedPercentageOfParValue" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_NumberOfRentalUnitsFinancedByTaxExemptLoan" name="NumberOfRentalUnitsFinancedByTaxExemptLoan" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_PartnersCapitalAccountFixedRate" name="PartnersCapitalAccountFixedRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TheResidencyAtEntrepreneurMember" name="TheResidencyAtEntrepreneurMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAvailableForFutureIssuance" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsSharesAvailableForFutureIssuance" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DebtInstrumentRemarketingSeniorSecuritiesRate" name="DebtInstrumentRemarketingSeniorSecuritiesRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_MortgagesPayableNet" name="MortgagesPayableNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_BarclaysCapitalIncMember" name="BarclaysCapitalIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheResidencyAtMayerMember" name="TheResidencyAtMayerMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgagesPayableAbstract" name="MortgagesPayableAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OhioPropertiesSeriesAMember" name="OhioPropertiesSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesJTMortgageMember" name="SeriesJTMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PercentageOfPartnershipsCapitalContributionsToEquityInvestments" name="PercentageOfPartnershipsCapitalContributionsToEquityInvestments" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SantaFeApartmentsMember" name="SantaFeApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxExemptSecuritiesOtherThanMRBsAndOtherInvestmentsMember" name="TaxExemptSecuritiesOtherThanMRBsAndOtherInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PropertyLoansNetOfLoanLossAllowanceTable" name="PropertyLoansNetOfLoanLossAllowanceTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OaksAtGeorgetownMember" name="OaksAtGeorgetownMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_Live929ApartmentsMember" name="Live929ApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SecuredLineOfCreditDisclosureTextBlock" name="SecuredLineOfCreditDisclosureTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ProceedsFromIssuanceOfRedeemablePreferredUnits" name="ProceedsFromIssuanceOfRedeemablePreferredUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_TheParkAtSondrioMember" name="TheParkAtSondrioMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ConroeTXMember" name="ConroeTXMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondRemainingMaximumCommitmentsAmount" name="MortgageRevenueBondRemainingMaximumCommitmentsAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ReimbursementOfFranchiseMarginTaxesPaidOnBehalfOfUnconsolidatedEntities" name="ReimbursementOfFranchiseMarginTaxesPaidOnBehalfOfUnconsolidatedEntities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndTwentySixMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ConstructionLoanAmountOutstanding" name="ConstructionLoanAmountOutstanding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlacePropertyLoanMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeWillowPlacePropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillageSupplementalPropertyLoanMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillageSupplementalPropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PercentageOfCapitalProvidedForJointVenture" name="PercentageOfCapitalProvidedForJointVenture" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TierOneDistributionMember" name="TierOneDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_McDonoughGeorgiaMember" name="McDonoughGeorgiaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear4" name="DerivativeWeightedAverageFixedInterestRateYear4" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SummaryOfPartnershipSBondPurchaseCommitmentsTableTextBlock" name="SummaryOfPartnershipSBondPurchaseCommitmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_MortgageLoansOnRealEstateRedemptionPremiumAmount" name="MortgageLoansOnRealEstateRedemptionPremiumAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_AvistarAtTheOaksSeriesAMember" name="AvistarAtTheOaksSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OtherAssetsLineItems" name="OtherAssetsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SolaImpactOpportunityZoneFundOneMember" name="SolaImpactOpportunityZoneFundOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgagesPayableAndOtherSecuredFinancingNet" name="MortgagesPayableAndOtherSecuredFinancingNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MeadowValleyMember" name="MeadowValleyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PerformingMember" name="PerformingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_InvestmentOwnedRedemptionMonth" name="InvestmentOwnedRedemptionMonth" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_RemainingCommitmentsToEquityInvestmentMaximum" name="RemainingCommitmentsToEquityInvestmentMaximum" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MagnoliaHeightsGilMember" name="MagnoliaHeightsGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesJFiveMortgageMember" name="SeriesJFiveMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PartnershipRecognizedLoanFee" name="PartnershipRecognizedLoanFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_FixedMThirtyThreeMember" name="FixedMThirtyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FortyOnColonyMember" name="FortyOnColonyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AverageNotionalAmountYear3" name="AverageNotionalAmountYear3" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_DebtFinancingMaturitiesRepaymentOfPrincipalInYearTwo" name="DebtFinancingMaturitiesRepaymentOfPrincipalInYearTwo" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PaymentOfDistributionsToPartners" name="PaymentOfDistributionsToPartners" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MorganStanleyBankMember" name="MorganStanleyBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NumberOfVariableInterestEntities" name="NumberOfVariableInterestEntities" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_GuarantyAgreementRequiredPartnershipToMaintainNetWorthAmount" name="GuarantyAgreementRequiredPartnershipToMaintainNetWorthAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear7" name="DerivativeWeightedAverageFixedInterestRateYear7" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_PaymentOfServiceFees" name="PaymentOfServiceFees" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TaxExemptBondSecuritizationMember" name="TaxExemptBondSecuritizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LeaseAgreementAnnualRenewableIncreasePercentage" name="LeaseAgreementAnnualRenewableIncreasePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoansBondsCommitment" name="TaxableGovernmentalIssuerLoansBondsCommitment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ResidencyAtMayerMrbsMember" name="ResidencyAtMayerMrbsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HeldToMaturitySecuritiesProvisionForLoanLossesExpensed" name="HeldToMaturitySecuritiesProvisionForLoanLossesExpensed" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_PropertyLoanReceivableGross" name="PropertyLoanReceivableGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_HelotesTexasMember" name="HelotesTexasMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HopeOnAvalonTaxableGilMember" name="HopeOnAvalonTaxableGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CentennialCrossingsMember" name="CentennialCrossingsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SolanoVistaMember" name="SolanoVistaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VillageAtRiversEdgeMember" name="VillageAtRiversEdgeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GuaranteesExpirationYear" name="GuaranteesExpirationYear" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_The5050StudentHousingUNLMember" name="The5050StudentHousingUNLMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtEntrepreneurSeriesJFiveMember" name="ResidencyAtEntrepreneurSeriesJFiveMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtInstrumentNumberOfExtensions" name="DebtInstrumentNumberOfExtensions" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_PercentageOfLossContingencyRangeOfPossibleLossMaximum" name="PercentageOfLossContingencyRangeOfPossibleLossMaximum" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_FortyOnColonySeriesPMember" name="FortyOnColonySeriesPMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OmahaNebraskaMember" name="OmahaNebraskaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheSaffordMember" name="TheSaffordMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SaleOfInvestmentMonth" name="SaleOfInvestmentMonth" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_EffectiveRateMinimumMember" name="EffectiveRateMinimumMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ThePalmsAtPremierParkApartmentsMRBMember" name="ThePalmsAtPremierParkApartmentsMRBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NumberOfLoansOnNonaccrualStatus" name="NumberOfLoansOnNonaccrualStatus" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AgapeHelotes-SeriesA-OneMember" name="AgapeHelotes-SeriesA-OneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarOnTheBlvdSeriesAMember" name="AvistarOnTheBlvdSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LasPalmasTwoMember" name="LasPalmasTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LimitedPartnerRestrictedAndUnrestrictedMember" name="LimitedPartnerRestrictedAndUnrestrictedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GuaranteesExpirationMonthAndYear" name="GuaranteesExpirationMonthAndYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_CommitmentMaturityDate" name="CommitmentMaturityDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_PartnershipContributedCapitalProvidedForJointVenture" name="PartnershipContributedCapitalProvidedForJointVenture" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TermTobTrustSecuritizationMember" name="TermTobTrustSecuritizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_IncomeTaxProvisionTable" name="IncomeTaxProvisionTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ContingentInterestIncome" name="ContingentInterestIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_ProceedsFromTaxableMortgageRevenueBonds" name="ProceedsFromTaxableMortgageRevenueBonds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_FirstMortgageOneMember" name="FirstMortgageOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RequiredPercentageOfPrincipalPaymentForSecondExtension" name="RequiredPercentageOfPrincipalPaymentForSecondExtension" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VantageAtConroeMember" name="VantageAtConroeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SanDiegoCaliforniaMember" name="SanDiegoCaliforniaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SanMarcosTXMember" name="SanMarcosTXMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RateForAdministrationFees" name="RateForAdministrationFees" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_HilltopAtSignalHillsGilMember" name="HilltopAtSignalHillsGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LegacyCommonsMagnoliaOsperyVillageWillowPalaceApartmentsAndSupplementalMember" name="LegacyCommonsMagnoliaOsperyVillageWillowPalaceApartmentsAndSupplementalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_CommitmentsAndOtherGuaranteesTable" name="CommitmentsAndOtherGuaranteesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RisksAndUncertaintiesPolicyTextBlock" name="RisksAndUncertaintiesPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_NumberOfBedsInRealEstateProperty" name="NumberOfBedsInRealEstateProperty" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AgapeHelotesSeriesBMember" name="AgapeHelotesSeriesBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_NatchitochesThomasApartmentsMember" name="NatchitochesThomasApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RepaymentsOfSecuredLinesOfCredit" name="RepaymentsOfSecuredLinesOfCredit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_CCBASeniorGardenApartmentsMember" name="CCBASeniorGardenApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheJessamAtHaysFarmsMember" name="TheJessamAtHaysFarmsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SummaryOfTobTrustFinancingsTableTextBlock" name="SummaryOfTobTrustFinancingsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_InitialLeaseTermExpirationPeriod" name="InitialLeaseTermExpirationPeriod" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_IncentiveDistributionDistributionPerYearIncomeLoss" name="IncentiveDistributionDistributionPerYearIncomeLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_AvistarOnBoulevardMember" name="AvistarOnBoulevardMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AnaheimWalnutAKAWellspringApartmentsMember" name="AnaheimWalnutAKAWellspringApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansHeldInTrustMember" name="GovernmentalIssuerLoansHeldInTrustMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesPTMortgageMember" name="SeriesPTMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WindsorShoresApartmentsMember" name="WindsorShoresApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarAtCopperfieldSeriesAMember" name="AvistarAtCopperfieldSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember" name="SeriesA1PreferredUnitsIssuedOnAprilTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNinteenSandyCreekTaxableLoanMember" name="TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNinteenSandyCreekTaxableLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_M24TebsMember" name="M24TebsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveTwoMember" name="PoppyGroveTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarPortfolio2Member" name="AvistarPortfolio2Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LegacyCommonsAtSignalHillsMember" name="LegacyCommonsAtSignalHillsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtHuttoMember" name="VantageAtHuttoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustPortfolioPhcftMember" name="TrustPortfolioPhcftMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VillageAtHanfordSquareMember" name="VillageAtHanfordSquareMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VariableInterestEntityClassificationOfCarryingAmountAssetsTableTextBlock" name="VariableInterestEntityClassificationOfCarryingAmountAssetsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear8" name="DerivativeWeightedAverageFixedInterestRateYear8" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VantageAtMckinneyFallsMember" name="VantageAtMckinneyFallsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AverageNotionalAmountAbstract" name="AverageNotionalAmountAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheParkAtViettiMember" name="TheParkAtViettiMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HopeOnBroadwayMember" name="HopeOnBroadwayMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DateOfDebtBorrowing" name="DateOfDebtBorrowing" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SeriesBbFourMortgageMember" name="SeriesBbFourMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TierTwoDistributionMember" name="TierTwoDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PropertyLoanReceivableAllowanceForCreditLosses" name="PropertyLoanReceivableAllowanceForCreditLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_SandyCreekApartmentsGILMember" name="SandyCreekApartmentsGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_Trust2021Xf2926OasisAtTwinLakesPropertyLoanMember" name="Trust2021Xf2926OasisAtTwinLakesPropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtUnamortizedDeferredFinancingCostsAndPremium" name="DebtUnamortizedDeferredFinancingCostsAndPremium" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_PercentageOfNonCumulativeCashDividend" name="PercentageOfNonCumulativeCashDividend" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_InvestmentCommitmentsInterestRatePercentage" name="InvestmentCommitmentsInterestRatePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SeriesPTMember" name="SeriesPTMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ValageSeniorLivingCarsonValleyMember" name="ValageSeniorLivingCarsonValleyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtTheEntrepreneurJFourMember" name="ResidencyAtTheEntrepreneurJFourMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsSupplementalGILMember" name="TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyThreeWillowPlaceApartmentsSupplementalGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RequiredRatingForTaxExemptedInvestmentsOtherThanMortgageRevenueBonds" name="RequiredRatingForTaxExemptedInvestmentsOtherThanMortgageRevenueBonds" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_MFPropertiesSegmentMember" name="MFPropertiesSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_Live929Member" name="Live929Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansAbstract" name="GovernmentalIssuerLoansAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GreeleyCoMember" name="GreeleyCoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HuntsvilleALMember" name="HuntsvilleALMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtInstrumentRedemptionPrincipalPaydownApplied" name="DebtInstrumentRedemptionPrincipalPaydownApplied" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_LoanMaturityDate" name="LoanMaturityDate" type="xbrli:dateItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TaxableMortgageRevenueBondsMember" name="TaxableMortgageRevenueBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_EffectiveRateMaximumMember" name="EffectiveRateMaximumMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FloorInterestRate" name="FloorInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AvistarAtWoodHollowMember" name="AvistarAtWoodHollowMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LoanFinancingFixedInterestRate" name="LoanFinancingFixedInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_InvestmentOwnedUnrecognizedUnrealizedAppreciations" name="InvestmentOwnedUnrecognizedUnrealizedAppreciations" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_SummaryOfSignificantAccountingPoliciesLineItems" name="SummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ColumbiaSouthCarolinaMember" name="ColumbiaSouthCarolinaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LynnhavenApartmentsMember" name="LynnhavenApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ProceedsFromSaleOfInvestmentInUnconsolidatedEntity" name="ProceedsFromSaleOfInvestmentInUnconsolidatedEntity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_MortgageRevenueBondsOnRealEstateRedemptionsTableTextBlock" name="MortgageRevenueBondsOnRealEstateRedemptionsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DebtInstrumentStatedMaturityDate" name="DebtInstrumentStatedMaturityDate" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_NonPartnershipAdministrativeFeeReceived" name="NonPartnershipAdministrativeFeeReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember" name="MortgageRevenueBondsAndTaxableMortgageRevenueBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BorrowerReAllocatedPreviouslyProvidedFunding" name="BorrowerReAllocatedPreviouslyProvidedFunding" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_PalmsAtPremierParkMember" name="PalmsAtPremierParkMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoansMember" name="TaxableGovernmentalIssuerLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TwentyTwentyFourPFASecuritizationTransactionMember" name="TwentyTwentyFourPFASecuritizationTransactionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PartnershipInvestmentAcquisitionMonthAndYear" name="PartnershipInvestmentAcquisitionMonthAndYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AffordableMultifamilyGovernmentalIssuerLoanInvestmentsSegmentMember" name="AffordableMultifamilyGovernmentalIssuerLoanInvestmentsSegmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RosewoodTownhomesSeriesATOBTrustsSecuritizationMember" name="RosewoodTownhomesSeriesATOBTrustsSecuritizationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateRemainderOfFiscalYear" name="DerivativeWeightedAverageFixedInterestRateRemainderOfFiscalYear" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_LeaseAgreementExtendedTerm" name="LeaseAgreementExtendedTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AverageNotionalAmountYear2" name="AverageNotionalAmountYear2" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIGILMember" name="TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PropertyLoansNetOfLoanLossAllowanceAbstract" name="PropertyLoansNetOfLoanLossAllowanceAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoans" name="TaxableGovernmentalIssuerLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_SummaryOfTaxableMortgageRevenueBondsAndGovernmentalIssuerLoansAcquiredTableTextBlock" name="SummaryOfTaxableMortgageRevenueBondsAndGovernmentalIssuerLoansAcquiredTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_PercentOfSpecialAllocations" name="PercentOfSpecialAllocations" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TaxableBondsMember" name="TaxableBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesA2MortgageMember" name="SeriesA2MortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MinimumLiquidity" name="MinimumLiquidity" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_MortgageRevenueBondsHeldInTrustMember" name="MortgageRevenueBondsHeldInTrustMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WoodingtonGardensApartmentsMember" name="WoodingtonGardensApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtFinancingResetFrequency" name="DebtFinancingResetFrequency" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VantageAtBulverdeMember" name="VantageAtBulverdeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AverageNotionalAmountRemainderOfFiscalYear" name="AverageNotionalAmountRemainderOfFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_AvistarAtTheCrestSeriesAMember" name="AvistarAtTheCrestSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesBbTMortgageMember" name="SeriesBbTMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AverageNotionalAmountYear4" name="AverageNotionalAmountYear4" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_LiveNineTwoNineApartmentsSeriesTwoThousandFourteenAMember" name="LiveNineTwoNineApartmentsSeriesTwoThousandFourteenAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FreestoneAtCrestaBellaMember" name="FreestoneAtCrestaBellaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeasonsLakewoodMember" name="SeasonsLakewoodMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PartnershipCapitalAccountAdvancedFund" name="PartnershipCapitalAccountAdvancedFund" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_PartnersCapitalReverseUnitSplit" name="PartnersCapitalReverseUnitSplit" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TemporaryEquityRedeemablePreferredUnitsRedemptionValue" name="TemporaryEquityRedeemablePreferredUnitsRedemptionValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_SummaryOfSalesInformationOfPartnershipInvestmentInUnconsolidatedEntitiesTableTextBlock" name="SummaryOfSalesInformationOfPartnershipInvestmentInUnconsolidatedEntitiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_GuarantyAgreementRequiredPartnershipToMaintainLiquidAssetsAmount" name="GuarantyAgreementRequiredPartnershipToMaintainLiquidAssetsAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_SeriesMMortgageMember" name="SeriesMMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BondPurchaseCommitmentAbstract" name="BondPurchaseCommitmentAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_UnfundedCommitmentsMember" name="UnfundedCommitmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_UnrealizedGainsLossesFromPropertyLoanHeldForSale" name="UnrealizedGainsLossesFromPropertyLoanHeldForSale" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_HopeOnAvalonGilMember" name="HopeOnAvalonGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtEmpireBbOneMember" name="ResidencyAtEmpireBbOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RequiredPercentageOfPrincipalPaymentForFirstExtension" name="RequiredPercentageOfPrincipalPaymentForFirstExtension" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_HopeOnAvalonTaxableMember" name="HopeOnAvalonTaxableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_The5050MfPropertyMortgageMember" name="The5050MfPropertyMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GreystoneBridgeLendingFundManagerLLCMember" name="GreystoneBridgeLendingFundManagerLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ThirdPartyInvestorMember" name="ThirdPartyInvestorMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillagePropertyLoanMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndThirtyNineOspreyVillagePropertyLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarIn09Member" name="AvistarIn09Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_InvestmentCommitmentExecutedMonth" name="InvestmentCommitmentExecutedMonth" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear3" name="DerivativeWeightedAverageFixedInterestRateYear3" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VantageAtHuttoVantageAtLovelandAndFreestoneCrestaBellaMember" name="VantageAtHuttoVantageAtLovelandAndFreestoneCrestaBellaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WillowPlaceApartmentsSupplementalMember" name="WillowPlaceApartmentsSupplementalMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RaleighNCMember" name="RaleighNCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtHelotesMember" name="VantageAtHelotesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMember" name="TaxableMortgageRevenueBondsAndTaxableGovernmentalIssuerLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OtherAssetsTable" name="OtherAssetsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BondPurchaseCommitmentLineItems" name="BondPurchaseCommitmentLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheSuitesOnPaseoMember" name="TheSuitesOnPaseoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ScheduleOfNetLossExclusiveOfGainsOnSaleOfMfPropertyTableTextBlock" name="ScheduleOfNetLossExclusiveOfGainsOnSaleOfMfPropertyTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_RealEstateOwnershipPercentage" name="RealEstateOwnershipPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoansAllowanceForCreditLosses" name="TaxableGovernmentalIssuerLoansAllowanceForCreditLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_FourVantagePropertiesAndFreestoneAtCrestaBellaMember" name="FourVantagePropertiesAndFreestoneAtCrestaBellaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_RemainingPartnershipsCommitmentsAmount" name="RemainingPartnershipsCommitmentsAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_CommitmentMaturityDateDescription" name="CommitmentMaturityDateDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_IncreaseDecreaseFinancingReceivableAllowanceForCreditLossesRecovery" name="IncreaseDecreaseFinancingReceivableAllowanceForCreditLossesRecovery" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_DebtFinancingMaturitiesRepaymentsOfPrincipalAfterYearFive" name="DebtFinancingMaturitiesRepaymentsOfPrincipalAfterYearFive" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TaxExemptBondSecuritizationResidualFinancingMember" name="TaxExemptBondSecuritizationResidualFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TierThreeDistributionMember" name="TierThreeDistributionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ForwardLoanPurchaseAgreementMember" name="ForwardLoanPurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtEmpire-SeriesBB-4MRBMember" name="ResidencyAtEmpire-SeriesBB-4MRBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" name="FairValueAssetsLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_PartnershipAdvancedAdditionalFunds" name="PartnershipAdvancedAdditionalFunds" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMagnoliaHeightsGILMember" name="TrustTwentyTwentyOneXfTwoThousandNineHundredAndFiftyThreeMagnoliaHeightsGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenMember" name="TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMember" name="GovernmentalIssuerLoansAndTaxableGovernmentalIssuerLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MaryaliceCircleApartmentsMember" name="MaryaliceCircleApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondsIncludingBondsHeldInTrustMember" name="MortgageRevenueBondsIncludingBondsHeldInTrustMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtWestoverHillsMember" name="VantageAtWestoverHillsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LoanFinancingInterestRate" name="LoanFinancingInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenSandyCreekTaxableLoanMember" name="TrustTwentyTwentyFourXFThreeThousandTwoHundredAndNineteenSandyCreekTaxableLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TheParkAtSondrioSeriesTwoThousandTwentyTwoAMember" name="TheParkAtSondrioSeriesTwoThousandTwentyTwoAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MagnoliaCrossingMember" name="MagnoliaCrossingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MezzanineFinancingMember" name="MezzanineFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeniorConstructionFinancingMember" name="SeniorConstructionFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GuaranteesExtendedMaturityPeriod" name="GuaranteesExtendedMaturityPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_BondPurchaseCommitmentInterestRatePercentage" name="BondPurchaseCommitmentInterestRatePercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ProceedsFromPaymentToDivestitureOfRealEstatePartnership" name="ProceedsFromPaymentToDivestitureOfRealEstatePartnership" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_CompanionAtThornHillApartmentsMember" name="CompanionAtThornHillApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PowdersvilleSCMember" name="PowdersvilleSCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtInstrumentExtendedMaturityPeriods" name="DebtInstrumentExtendedMaturityPeriods" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear1" name="DerivativeWeightedAverageFixedInterestRateYear1" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_VantageAtPowdersvilleMember" name="VantageAtPowdersvilleMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WatchMember" name="WatchMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LiveNineTwoNineSeriesTwoThousandTwentyTwoAMrbMember" name="LiveNineTwoNineSeriesTwoThousandTwentyTwoAMrbMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_LoanFinancingFloorInterestRate" name="LoanFinancingFloorInterestRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_PercentageOfReferralFeeToBeReceivedInOriginalPrincipalAmount" name="PercentageOfReferralFeeToBeReceivedInOriginalPrincipalAmount" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_BondPurchaseCommitmentEstimatedClosingDateDescription" name="BondPurchaseCommitmentEstimatedClosingDateDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_WillowPlaceGILMember" name="WillowPlaceGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TylerParkTownhomesMember" name="TylerParkTownhomesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarAtCopperfieldMember" name="AvistarAtCopperfieldMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember" name="SeriesA1PreferredUnitsIssuedOnOctoberTwoThousandTwentyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OperatingLeaseAnnualLeasePayment" name="OperatingLeaseAnnualLeasePayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_AggregateAvailableCommitmentCannotExceedBorrowingBaseCalculationEqualToPercentMultipliedByTheAggregateValueOfPoolOfEligibleEncumberedAssets" name="AggregateAvailableCommitmentCannotExceedBorrowingBaseCalculationEqualToPercentMultipliedByTheAggregateValueOfPoolOfEligibleEncumberedAssets" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DebtInstrumentRedemptionMonth" name="DebtInstrumentRedemptionMonth" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ThirdMortgageMember" name="ThirdMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FortyOnColonyMRBMember" name="FortyOnColonyMRBMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TomballTXMember" name="TomballTXMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SeriesAMortgageMember" name="SeriesAMortgageMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtLovelandMember" name="VantageAtLovelandMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_AvistarAtWilcrestSeriesAMember" name="AvistarAtWilcrestSeriesAMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveIGilMember" name="PoppyGroveIGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PartnershipIncomeExpensesAndCashDistributionsAbstract" name="PartnershipIncomeExpensesAndCashDistributionsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BondPurchaseCommitmentYearAndMonth" name="BondPurchaseCommitmentYearAndMonth" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_LongTermPurchaseCommitmentsFairValue" name="LongTermPurchaseCommitmentsFairValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_VillageAtMaderaMember" name="VillageAtMaderaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VillagePointMember" name="VillagePointMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtSanMarcosMember" name="VantageAtSanMarcosMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ColumbiaGardensMember" name="ColumbiaGardensMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HopeOfAvalonMember" name="HopeOfAvalonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HopeOnAvalonMember" name="HopeOnAvalonMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondsOnRealEstateSalesTableTextBlock" name="MortgageRevenueBondsOnRealEstateSalesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_RestrictedUnitholdersMember" name="RestrictedUnitholdersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ScharbauerFlatsApartmentsMember" name="ScharbauerFlatsApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtFinancingFairValueDisclosure" name="DebtFinancingFairValueDisclosure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_The5050MfPropertyTifLoanMember" name="The5050MfPropertyTifLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GermantownTNMember" name="GermantownTNMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtTheMayerSeriesAT1Member" name="ResidencyAtTheMayerSeriesAT1Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_GovernmentalIssuerLoanMember" name="GovernmentalIssuerLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HandselMorganVillageApartmentsMember" name="HandselMorganVillageApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PoppyGroveIPoppyGroveIIAndPoppyGroveIIIMember" name="PoppyGroveIPoppyGroveIIAndPoppyGroveIIIMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIGILMember" name="TrustTwentyTwentyOneXFTwoThousandNineHundredAndFiftyPoppyGroveIIGILMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MizuhoMember" name="MizuhoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_PreviouslySoldInvestmentsMember" name="PreviouslySoldInvestmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableMortgageRevenueBondsWithFairValueHeldInTrust" name="TaxableMortgageRevenueBondsWithFairValueHeldInTrust" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="ghi_OasisAtTwinLakesGilMember" name="OasisAtTwinLakesGilMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SummaryOfAverageNotionalAmountAndWeightedAverageFixedRateByYearTableTextBlock" name="SummaryOfAverageNotionalAmountAndWeightedAverageFixedRateByYearTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TheResidencyAtEmpireMember" name="TheResidencyAtEmpireMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_WillowPlaceApartmentsMember" name="WillowPlaceApartmentsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_FreestoneGreeleyMember" name="FreestoneGreeleyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_OcotilloSpringsSeriesATMember" name="OcotilloSpringsSeriesATMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BeneficialUnitCertificatesMember" name="BeneficialUnitCertificatesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_BeneficialUnitCertificatesDistributionRatio" name="BeneficialUnitCertificatesDistributionRatio" type="xbrli:pureItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SummaryOfRangeOfEffectiveYieldsAndWeightedAverageEffectiveYieldsOfPartnershipsInvestmentsTableTextBlock" name="SummaryOfRangeOfEffectiveYieldsAndWeightedAverageEffectiveYieldsOfPartnershipsInvestmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SummaryOfSignificantAccountingPoliciesAbstract" name="SummaryOfSignificantAccountingPoliciesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ResidencyAtTheEntrepreneurMrbsAndTaxableMember" name="ResidencyAtTheEntrepreneurMrbsAndTaxableMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_DebtInstrumentMaturityDateMonthAndYear" name="DebtInstrumentMaturityDateMonthAndYear" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_TaxExemptLoanMaturityPeriods" name="TaxExemptLoanMaturityPeriods" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_SoLaImpactOpportunityZoneFundMember" name="SoLaImpactOpportunityZoneFundMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_HilltopAtSignalHillsMember" name="HilltopAtSignalHillsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_SaleOfMortgageRevenueBondsMember" name="SaleOfMortgageRevenueBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_TaxableGovernmentalIssuerLoanAndRemainingFundingCommitmentYearAndMonth" name="TaxableGovernmentalIssuerLoanAndRemainingFundingCommitmentYearAndMonth" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_DerivativeWeightedAverageFixedInterestRateYear9" name="DerivativeWeightedAverageFixedInterestRateYear9" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_AverageNotionalAmountYear1" name="AverageNotionalAmountYear1" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_ProceedsFromFinalLiquidation" name="ProceedsFromFinalLiquidation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_GovernmentalIssuerLoansHeldInTrust" name="GovernmentalIssuerLoansHeldInTrust" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_TaxableMortgageRevenueBondsAndRemainingFundingCommitmentYearAndMonth" name="TaxableMortgageRevenueBondsAndRemainingFundingCommitmentYearAndMonth" type="xbrli:gYearMonthItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="ghi_BuildingsImprovementsAndEquipmentGross" name="BuildingsImprovementsAndEquipmentGross" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_DebtInstrumentPercentageOfFacilityFees" name="DebtInstrumentPercentageOfFacilityFees" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="ghi_ConcordAtGulfgateMember" name="ConcordAtGulfgateMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_VantageAtFairOaksMember" name="VantageAtFairOaksMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_ProceedsFromReturnOfInvestmentsInUnconsolidatedEntities" name="ProceedsFromReturnOfInvestmentsInUnconsolidatedEntities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="ghi_BrookstoneMember" name="BrookstoneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="ghi_MortgageRevenueBondMember" name="MortgageRevenueBondMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>
