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    <link:label id="lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_AD889BF5458C4C0AB3CEEFFF65200A4F_verboseLabel_en-US" xlink:label="lab_us-gaap_EquityMethodInvestmentOwnershipPercentage_AD889BF5458C4C0AB3CEEFFF65200A4F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity method investment ownership percentage</link:label>
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    <link:label id="lab_us-gaap_GuaranteeObligationsMaximumExposure_A821778E29BA447CCE53EFFF65204949_verboseLabel_en-US" xlink:label="lab_us-gaap_GuaranteeObligationsMaximumExposure_A821778E29BA447CCE53EFFF65204949" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Maximum guaranteed amount of loans utilized for construction and development activities for joint ventures</link:label>
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    <link:label id="lab_cpt_FeesEarnedForPropertyAndAssetManagementConstructionDevelopmentAndOtherServicesToJointVentures_2F864B99EB67FB29FE2BEFFF65205CBA_terseLabel_en-US" xlink:label="lab_cpt_FeesEarnedForPropertyAndAssetManagementConstructionDevelopmentAndOtherServicesToJointVentures_2F864B99EB67FB29FE2BEFFF65205CBA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fees earned for property and asset management, construction, development, and other services to joint ventures</link:label>
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    <link:label id="lab_cpt_NumberOfOperatingPropertiesSold_C98B8C439F9C87C6DD96EFFF6520E2CD_terseLabel_en-US" xlink:label="lab_cpt_NumberOfOperatingPropertiesSold_C98B8C439F9C87C6DD96EFFF6520E2CD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of operating properties sold</link:label>
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    <link:loc xlink:href="cpt-20130930.xsd#cpt_NumberOfOperatingPropertiesSold" xlink:label="loc_cpt_NumberOfOperatingPropertiesSold_C98B8C439F9C87C6DD96EFFF6520E2CD" xlink:type="locator" />
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    <link:label id="lab_cpt_NumberOfApartmentUnitsInPropertyDisposed_C8E986C5A620783DA909EFFF6520DAF5_terseLabel_en-US" xlink:label="lab_cpt_NumberOfApartmentUnitsInPropertyDisposed_C8E986C5A620783DA909EFFF6520DAF5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of apartment homes in operating properties sold</link:label>
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    <link:label id="lab_cpt_NumberOfApartmentUnitsInPropertyDisposed_C8E986C5A620783DA909EFFF6520DAF5_documentation_en-US" xlink:label="lab_cpt_NumberOfApartmentUnitsInPropertyDisposed_C8E986C5A620783DA909EFFF6520DAF5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Number of apartment units in property disposed of or held for sale during the period.</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_8513F0C1494C08E858A4EFFF65209BC1_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_8513F0C1494C08E858A4EFFF65209BC1" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of 14 operating properties</link:label>
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    <link:label id="lab_cpt_GainLossOnSaleOfUnconsolidatedJvProperty_A0698E1C44234A3EA6E1EFFF65203741_terseLabel_en-US" xlink:label="lab_cpt_GainLossOnSaleOfUnconsolidatedJvProperty_A0698E1C44234A3EA6E1EFFF65203741" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on sale of unconsolidated JV property</link:label>
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    <link:label id="lab_cpt_Promotedequityinterest_C30EDF82053F7DD047A6EFFF6520DD4B_terseLabel_en-US" xlink:label="lab_cpt_Promotedequityinterest_C30EDF82053F7DD047A6EFFF6520DD4B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Promoted equity interest in assets sold during period</link:label>
    <link:label id="lab_cpt_Promotedequityinterest_C30EDF82053F7DD047A6EFFF6520DD4B_label_en-US" xlink:label="lab_cpt_Promotedequityinterest_C30EDF82053F7DD047A6EFFF6520DD4B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Promoted equity interest</link:label>
    <link:label id="lab_cpt_Promotedequityinterest_C30EDF82053F7DD047A6EFFF6520DD4B_documentation_en-US" xlink:label="lab_cpt_Promotedequityinterest_C30EDF82053F7DD047A6EFFF6520DD4B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Promote income recognized in equity in income (loss) of joint ventures within our consolidated statements of income earned as a result of achieving certain performance measures as set forth in the joint venture agreement.</link:label>
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    <link:label id="lab_cpt_PropertyAcquisitionsDiscontinuedOperationsAndAssetsHeldForSaleAbstract_13777DB507AC36F40F4F0F8DB43E86E8_label_en-US" xlink:label="lab_cpt_PropertyAcquisitionsDiscontinuedOperationsAndAssetsHeldForSaleAbstract_13777DB507AC36F40F4F0F8DB43E86E8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property Acquisitions, Discontinued Operations, And Assets Held For Sale [Abstract]</link:label>
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    <link:label id="lab_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_4F85A748545CAC013E810F8DB43ED07D_label_en-US" xlink:label="lab_us-gaap_LongLivedAssetsHeldForSaleByAssetTypeAxis_4F85A748545CAC013E810F8DB43ED07D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Lived Assets Held-for-sale by Asset Type [Axis]</link:label>
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    <link:label id="lab_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3C30B7756AF111F73F1C0F8DB43EFD5D_label_en-US" xlink:label="lab_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3C30B7756AF111F73F1C0F8DB43EFD5D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Long Lived Assets Held-for-sale, Name [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LongLivedAssetsHeldForSaleNameDomain" xlink:label="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3C30B7756AF111F73F1C0F8DB43EFD5D" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3C30B7756AF111F73F1C0F8DB43EFD5D" xlink:to="lab_us-gaap_LongLivedAssetsHeldForSaleNameDomain_3C30B7756AF111F73F1C0F8DB43EFD5D" xlink:type="arc" />
    <link:label id="lab_us-gaap_AssetsHeldForSaleMember_8B56CFADDFE49571005B0F8DB43E1EEA_terseLabel_en-US" xlink:label="lab_us-gaap_AssetsHeldForSaleMember_8B56CFADDFE49571005B0F8DB43E1EEA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Assets Held-for-sale [Member]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AssetsHeldForSaleMember" xlink:label="loc_us-gaap_AssetsHeldForSaleMember_8B56CFADDFE49571005B0F8DB43E1EEA" xlink:type="locator" />
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    <link:label id="lab_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_DD115B83770293CAAC370F8DB43E7960_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_DD115B83770293CAAC370F8DB43E7960" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Name of Property [Domain]</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain" xlink:label="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_DD115B83770293CAAC370F8DB43E7960" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_DD115B83770293CAAC370F8DB43E7960" xlink:to="lab_us-gaap_RealEstateAndAccumulatedDepreciationNameOfPropertyDomain_DD115B83770293CAAC370F8DB43E7960" xlink:type="arc" />
    <link:label id="lab_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE_terseLabel_en-US" xlink:label="lab_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Camden Post Oak [Member]</link:label>
    <link:label id="lab_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE_label_en-US" xlink:label="lab_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Camden Post Oak [Member]</link:label>
    <link:label id="lab_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE_documentation_en-US" xlink:label="lab_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Camden Post Oak</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_CamdenPostOakMember" xlink:label="loc_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE" xlink:to="lab_cpt_CamdenPostOakMember_BA91506B5237F17BC5160F8DB43E6BAE" xlink:type="arc" />
    <link:label id="lab_cpt_CamdenSoteloMember_D49FF505D0C026D828EE0F8DB43E3F4E_terseLabel_en-US" xlink:label="lab_cpt_CamdenSoteloMember_D49FF505D0C026D828EE0F8DB43E3F4E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Camden Sotelo [Member]</link:label>
    <link:label id="lab_cpt_CamdenSoteloMember_D49FF505D0C026D828EE0F8DB43E3F4E_label_en-US" xlink:label="lab_cpt_CamdenSoteloMember_D49FF505D0C026D828EE0F8DB43E3F4E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Camden Sotelo [Member]</link:label>
    <link:label id="lab_cpt_CamdenSoteloMember_D49FF505D0C026D828EE0F8DB43E3F4E_documentation_en-US" xlink:label="lab_cpt_CamdenSoteloMember_D49FF505D0C026D828EE0F8DB43E3F4E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Camden Sotelo</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_CamdenSoteloMember" xlink:label="loc_cpt_CamdenSoteloMember_D49FF505D0C026D828EE0F8DB43E3F4E" xlink:type="locator" />
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    <link:label id="lab_cpt_CamdenVantageMember_FD4453E1919874CB1F900F8DB43E9DBC_terseLabel_en-US" xlink:label="lab_cpt_CamdenVantageMember_FD4453E1919874CB1F900F8DB43E9DBC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Camden Vantage [Member]</link:label>
    <link:label id="lab_cpt_CamdenVantageMember_FD4453E1919874CB1F900F8DB43E9DBC_label_en-US" xlink:label="lab_cpt_CamdenVantageMember_FD4453E1919874CB1F900F8DB43E9DBC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Camden Vantage [Member]</link:label>
    <link:label id="lab_cpt_CamdenVantageMember_FD4453E1919874CB1F900F8DB43E9DBC_documentation_en-US" xlink:label="lab_cpt_CamdenVantageMember_FD4453E1919874CB1F900F8DB43E9DBC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Camden Vantage</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_CamdenVantageMember" xlink:label="loc_cpt_CamdenVantageMember_FD4453E1919874CB1F900F8DB43E9DBC" xlink:type="locator" />
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    <link:label id="lab_us-gaap_BusinessAcquisitionLineItems_8133E81F4F9BC75E36320F8DB43ECC8C_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessAcquisitionLineItems_8133E81F4F9BC75E36320F8DB43ECC8C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Acquisition [Line Items]</link:label>
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    <link:label id="lab_cpt_NumberOfApartmentUnitsInWhollyOwnedPropertyAcquired_9C30140332C5ADBA55460F8DB43EDB74_terseLabel_en-US" xlink:label="lab_cpt_NumberOfApartmentUnitsInWhollyOwnedPropertyAcquired_9C30140332C5ADBA55460F8DB43EDB74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of apartment units in wholly owned property acquired</link:label>
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    <link:label id="lab_cpt_SalesPriceOfPropertyPurchased_C3587289896B6BF7EA8F0F8DB43E7E0B_terseLabel_en-US" xlink:label="lab_cpt_SalesPriceOfPropertyPurchased_C3587289896B6BF7EA8F0F8DB43E7E0B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Purchase price of operating properties acquired</link:label>
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    <link:label id="lab_us-gaap_NumberOfRealEstateProperties_7A0933373D1C45F5C5D00F8DB43E6C33_terseLabel_en-US" xlink:label="lab_us-gaap_NumberOfRealEstateProperties_7A0933373D1C45F5C5D00F8DB43E6C33" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Number of operating properties held for sale</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyHeldForSale_B7FD47EFD703192830720F8DB43E8655_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyHeldForSale_B7FD47EFD703192830720F8DB43E8655" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Property Held-for-sale</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromSaleOfPropertyHeldForSale" xlink:label="loc_us-gaap_ProceedsFromSaleOfPropertyHeldForSale_B7FD47EFD703192830720F8DB43E8655" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfPropertyHeldForSale_B7FD47EFD703192830720F8DB43E8655" xlink:to="lab_us-gaap_ProceedsFromSaleOfPropertyHeldForSale_B7FD47EFD703192830720F8DB43E8655" xlink:type="arc" />
    <link:label id="lab_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643_terseLabel_en-US" xlink:label="lab_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acres of land acquired</link:label>
    <link:label id="lab_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643_label_en-US" xlink:label="lab_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Acres of land acquired</link:label>
    <link:label id="lab_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643_documentation_en-US" xlink:label="lab_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Acres of land acquired by the company during the period to be utilized in the development of multiple multifamily apartment communities.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_AcresOfLandAcquired" xlink:label="loc_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643" xlink:to="lab_cpt_AcresOfLandAcquired_32BB89BF1DD4070E2FBA0F8DB43EA643" xlink:type="arc" />
    <link:label id="lab_us-gaap_PaymentsToAcquireLand_D03286B671DFDCB208D30F8DB43E2612_terseLabel_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireLand_D03286B671DFDCB208D30F8DB43E2612" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Payments to Acquire Land</link:label>
    <link:label id="lab_us-gaap_PaymentsToAcquireLand_D03286B671DFDCB208D30F8DB43E2612_label_en-US" xlink:label="lab_us-gaap_PaymentsToAcquireLand_D03286B671DFDCB208D30F8DB43E2612" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Payments to Acquire Land</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireLand" xlink:label="loc_us-gaap_PaymentsToAcquireLand_D03286B671DFDCB208D30F8DB43E2612" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_PaymentsToAcquireLand_D03286B671DFDCB208D30F8DB43E2612" xlink:to="lab_us-gaap_PaymentsToAcquireLand_D03286B671DFDCB208D30F8DB43E2612" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_D330B5CECD97B6B594DF0F8DB43E48EB_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_D330B5CECD97B6B594DF0F8DB43E48EB" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_D330B5CECD97B6B594DF0F8DB43E48EB_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_D330B5CECD97B6B594DF0F8DB43E48EB" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual" xlink:label="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_D330B5CECD97B6B594DF0F8DB43E48EB" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_D330B5CECD97B6B594DF0F8DB43E48EB" xlink:to="lab_us-gaap_BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual_D330B5CECD97B6B594DF0F8DB43E48EB" xlink:type="arc" />
    <link:label id="lab_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204_terseLabel_en-US" xlink:label="lab_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Business Combination, Pro Forma Information, Property Expenses Since Acquisition Date, Actual</link:label>
    <link:label id="lab_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204_label_en-US" xlink:label="lab_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combination Pro Forma Information Property Expenses Since Acquisition Date Actual</link:label>
    <link:label id="lab_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204_documentation_en-US" xlink:label="lab_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents the amount of property expenses of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual" xlink:label="loc_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204" xlink:to="lab_cpt_BusinessCombinationProFormaInformationPropertyExpensesSinceAcquisitionDateActual_C5F4EC27975DD89540510F8DB43E6204" xlink:type="arc" />
    <link:label id="lab_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950_verboseLabel_en-US" xlink:label="lab_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash related to the proceeds from the discpostion of two operating properties</link:label>
    <link:label id="lab_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950_label_en-US" xlink:label="lab_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from disposition included in restricted cash</link:label>
    <link:label id="lab_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950_documentation_en-US" xlink:label="lab_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Proceeds from the disposition of operating properties which was held with a qualified intermediary for use in a like-kind exchange.  We included this amount in restricted cash in our consolidated balance sheets.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_Proceedsfromdispositionincludedinrestrictedcash" xlink:label="loc_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950" xlink:to="lab_cpt_Proceedsfromdispositionincludedinrestrictedcash_54729EFE8161D2F9DF0A0F8DB43E5950" xlink:type="arc" />
    <link:label id="lab_us-gaap_AreaOfLand_C1CCA504BAE629D8386D0F8DB44E64F8_terseLabel_en-US" xlink:label="lab_us-gaap_AreaOfLand_C1CCA504BAE629D8386D0F8DB44E64F8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Acres of land sold</link:label>
    <link:label id="lab_us-gaap_AreaOfLand_C1CCA504BAE629D8386D0F8DB44E64F8_label_en-US" xlink:label="lab_us-gaap_AreaOfLand_C1CCA504BAE629D8386D0F8DB44E64F8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Area of Land</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AreaOfLand" xlink:label="loc_us-gaap_AreaOfLand_C1CCA504BAE629D8386D0F8DB44E64F8" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AreaOfLand_C1CCA504BAE629D8386D0F8DB44E64F8" xlink:to="lab_us-gaap_AreaOfLand_C1CCA504BAE629D8386D0F8DB44E64F8" xlink:type="arc" />
    <link:label id="lab_us-gaap_ProceedsFromSaleOfLandHeldforinvestment_1907E610680B20B457210F8DB44E7A6C_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfLandHeldforinvestment_1907E610680B20B457210F8DB44E7A6C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Sales price of land parcels</link:label>
    <link:label id="lab_us-gaap_ProceedsFromSaleOfLandHeldforinvestment_1907E610680B20B457210F8DB44E7A6C_label_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfLandHeldforinvestment_1907E610680B20B457210F8DB44E7A6C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Proceeds from Sale of Land Held-for-investment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ProceedsFromSaleOfLandHeldforinvestment" xlink:label="loc_us-gaap_ProceedsFromSaleOfLandHeldforinvestment_1907E610680B20B457210F8DB44E7A6C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ProceedsFromSaleOfLandHeldforinvestment_1907E610680B20B457210F8DB44E7A6C" xlink:to="lab_us-gaap_ProceedsFromSaleOfLandHeldforinvestment_1907E610680B20B457210F8DB44E7A6C" xlink:type="arc" />
    <link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_CA9235FF4B9CF91D3B760F8DB44EE6A5_terseLabel_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_CA9235FF4B9CF91D3B760F8DB44EE6A5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on sale of land</link:label>
    <link:label id="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_CA9235FF4B9CF91D3B760F8DB44EE6A5_label_en-US" xlink:label="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_CA9235FF4B9CF91D3B760F8DB44EE6A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Gain (Loss) on Disposition of Property Plant Equipment</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_GainLossOnSaleOfPropertyPlantEquipment" xlink:label="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_CA9235FF4B9CF91D3B760F8DB44EE6A5" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_CA9235FF4B9CF91D3B760F8DB44EE6A5" xlink:to="lab_us-gaap_GainLossOnSaleOfPropertyPlantEquipment_CA9235FF4B9CF91D3B760F8DB44EE6A5" xlink:type="arc" />
    <link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_CE7C606A688A13D5CEA8524FCB6B5D6F_verboseLabel_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_CE7C606A688A13D5CEA8524FCB6B5D6F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Principles Of Consolidation</link:label>
    <link:label id="lab_us-gaap_ConsolidationPolicyTextBlock_CE7C606A688A13D5CEA8524FCB6B5D6F_label_en-US" xlink:label="lab_us-gaap_ConsolidationPolicyTextBlock_CE7C606A688A13D5CEA8524FCB6B5D6F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Consolidation, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ConsolidationPolicyTextBlock" xlink:label="loc_us-gaap_ConsolidationPolicyTextBlock_CE7C606A688A13D5CEA8524FCB6B5D6F" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ConsolidationPolicyTextBlock_CE7C606A688A13D5CEA8524FCB6B5D6F" xlink:to="lab_us-gaap_ConsolidationPolicyTextBlock_CE7C606A688A13D5CEA8524FCB6B5D6F" xlink:type="arc" />
    <link:label id="lab_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412_verboseLabel_en-US" xlink:label="lab_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Interim Financial Reporting</link:label>
    <link:label id="lab_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412_label_en-US" xlink:label="lab_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interim Financial Reporting, Policy [Text Block]</link:label>
    <link:label id="lab_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412_documentation_en-US" xlink:label="lab_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Describes an entity's accounting policy for interim financial reporting.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_InterimFinancialReportingPolicyTextBlock" xlink:label="loc_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412" xlink:to="lab_cpt_InterimFinancialReportingPolicyTextBlock_364E328DF81A19E37CF8524FCB6B2412" xlink:type="arc" />
    <link:label id="lab_us-gaap_BusinessCombinationsPolicy_3562D914C8469FD3E2FE524FCB6B4E14_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_3562D914C8469FD3E2FE524FCB6B4E14" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Allocations of Purchase Price</link:label>
    <link:label id="lab_us-gaap_BusinessCombinationsPolicy_3562D914C8469FD3E2FE524FCB6B4E14_label_en-US" xlink:label="lab_us-gaap_BusinessCombinationsPolicy_3562D914C8469FD3E2FE524FCB6B4E14" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Business Combinations Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_BusinessCombinationsPolicy" xlink:label="loc_us-gaap_BusinessCombinationsPolicy_3562D914C8469FD3E2FE524FCB6B4E14" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_BusinessCombinationsPolicy_3562D914C8469FD3E2FE524FCB6B4E14" xlink:to="lab_us-gaap_BusinessCombinationsPolicy_3562D914C8469FD3E2FE524FCB6B4E14" xlink:type="arc" />
    <link:label id="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_0C5FB6737C4E8641CE4A524FCB6BAF76_verboseLabel_en-US" xlink:label="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_0C5FB6737C4E8641CE4A524FCB6BAF76" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Asset Impairment</link:label>
    <link:label id="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_0C5FB6737C4E8641CE4A524FCB6BAF76_label_en-US" xlink:label="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_0C5FB6737C4E8641CE4A524FCB6BAF76" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock" xlink:label="loc_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_0C5FB6737C4E8641CE4A524FCB6BAF76" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_0C5FB6737C4E8641CE4A524FCB6BAF76" xlink:to="lab_us-gaap_ImpairmentOrDisposalOfLongLivedAssetsPolicyTextBlock_0C5FB6737C4E8641CE4A524FCB6BAF76" xlink:type="arc" />
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_873C15B15C28D3EEDC82524FCB6B94F5_verboseLabel_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_873C15B15C28D3EEDC82524FCB6B94F5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cost Capitalization</link:label>
    <link:label id="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_873C15B15C28D3EEDC82524FCB6B94F5_label_en-US" xlink:label="lab_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_873C15B15C28D3EEDC82524FCB6B94F5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Property, Plant and Equipment, Policy [Policy Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PropertyPlantAndEquipmentPolicyTextBlock" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentPolicyTextBlock_873C15B15C28D3EEDC82524FCB6B94F5" xlink:type="locator" />
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    <link:label id="lab_cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePrice_1527AFF0B8BDB2D344480F8DB3F0AF8F_terseLabel_en-US" xlink:label="lab_cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePrice_1527AFF0B8BDB2D344480F8DB3F0AF8F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding Options, Weighted Average Price</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions_EDBD271D6AE7BFC9BDFA0F8DB3F00E0D" xlink:to="lab_us-gaap_ShareBasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeNumberOfExercisableOptions_EDBD271D6AE7BFC9BDFA0F8DB3F00E0D" xlink:type="arc" />
    <link:label id="lab_cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice_5DBCAB528C458FC4E5C90F8DB3F070E3_verboseLabel_en-US" xlink:label="lab_cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice_5DBCAB528C458FC4E5C90F8DB3F070E3" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Exercisable Options, Weighted Average Price</link:label>
    <link:label id="lab_cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice_5DBCAB528C458FC4E5C90F8DB3F070E3_label_en-US" xlink:label="lab_cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice_5DBCAB528C458FC4E5C90F8DB3F070E3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Based Compensation Shares Authorized Under Stock Options Plans Exercise Price Range Exercisable Options Weighted Average Exercise Price</link:label>
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    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_6EBB367D25C640C460210F8DB3F0DDB5_verboseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue_6EBB367D25C640C460210F8DB3F0DDB5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Aggregate intrinsic value of outstanding options</link:label>
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    <link:label id="lab_cpt_RealEstateAssetsAtCostTotal_9B05BBA031180F0956290F8DB4DBE3C2_label_en-US" xlink:label="lab_cpt_RealEstateAssetsAtCostTotal_9B05BBA031180F0956290F8DB4DBE3C2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real estate assets, at cost, total</link:label>
    <link:label id="lab_cpt_RealEstateAssetsAtCostTotal_9B05BBA031180F0956290F8DB4DBE3C2_documentation_en-US" xlink:label="lab_cpt_RealEstateAssetsAtCostTotal_9B05BBA031180F0956290F8DB4DBE3C2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The value of land and buildings and improvement before accumulated depreciation.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_RealEstateAssetsAtCostTotal" xlink:label="loc_cpt_RealEstateAssetsAtCostTotal_9B05BBA031180F0956290F8DB4DBE3C2" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_RealEstateAssetsAtCostTotal_9B05BBA031180F0956290F8DB4DBE3C2" xlink:to="lab_cpt_RealEstateAssetsAtCostTotal_9B05BBA031180F0956290F8DB4DBE3C2" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9EC47201F4EF2FCAE49B0F8DB4DB7756_negatedLabel_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9EC47201F4EF2FCAE49B0F8DB4DB7756" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Accumulated depreciation</link:label>
    <link:label id="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9EC47201F4EF2FCAE49B0F8DB4DB7756_label_en-US" xlink:label="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9EC47201F4EF2FCAE49B0F8DB4DB7756" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Investment Property, Accumulated Depreciation</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9EC47201F4EF2FCAE49B0F8DB4DB7756" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9EC47201F4EF2FCAE49B0F8DB4DB7756" xlink:to="lab_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9EC47201F4EF2FCAE49B0F8DB4DB7756" xlink:type="arc" />
    <link:label id="lab_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49_totalLabel_en-US" xlink:label="lab_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net operating real estate assets</link:label>
    <link:label id="lab_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49_label_en-US" xlink:label="lab_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net operating real estate assets</link:label>
    <link:label id="lab_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49_documentation_en-US" xlink:label="lab_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The net book value of land and buildings and improvement.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_NetOperatingRealEstateAssets" xlink:label="loc_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49" xlink:to="lab_cpt_NetOperatingRealEstateAssets_E9B777ED0A898B8DA7490F8DB4DB7F49" xlink:type="arc" />
    <link:label id="lab_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114_verboseLabel_en-US" xlink:label="lab_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Properties under development, including land</link:label>
    <link:label id="lab_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114_label_en-US" xlink:label="lab_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Properties under development including land</link:label>
    <link:label id="lab_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114_documentation_en-US" xlink:label="lab_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The current amount of expenditures for a real estate project that has not yet been completed including the carrying amount of
land available for development.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_PropertiesUnderDevelopmentIncludingLand" xlink:label="loc_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114" xlink:to="lab_cpt_PropertiesUnderDevelopmentIncludingLand_DEE55474CAF230C4EEBF0F8DB4DBE114" xlink:type="arc" />
    <link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_C6AEEE51673C51BE8EA80F8DB4DB7FDA_verboseLabel_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_C6AEEE51673C51BE8EA80F8DB4DB7FDA" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Investments in joint ventures</link:label>
    <link:label id="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_C6AEEE51673C51BE8EA80F8DB4DB7FDA_label_en-US" xlink:label="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_C6AEEE51673C51BE8EA80F8DB4DB7FDA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures" xlink:label="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_C6AEEE51673C51BE8EA80F8DB4DB7FDA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_C6AEEE51673C51BE8EA80F8DB4DB7FDA" xlink:to="lab_us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures_C6AEEE51673C51BE8EA80F8DB4DB7FDA" xlink:type="arc" />
    <link:label id="lab_us-gaap_RealEstateHeldforsale_281AC300688915037C310F8DB4DB19DE_terseLabel_en-US" xlink:label="lab_us-gaap_RealEstateHeldforsale_281AC300688915037C310F8DB4DB19DE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Properties held for sale</link:label>
    <link:label id="lab_us-gaap_RealEstateHeldforsale_281AC300688915037C310F8DB4DB19DE_label_en-US" xlink:label="lab_us-gaap_RealEstateHeldforsale_281AC300688915037C310F8DB4DB19DE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Held-for-sale</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RealEstateHeldforsale" xlink:label="loc_us-gaap_RealEstateHeldforsale_281AC300688915037C310F8DB4DB19DE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RealEstateHeldforsale_281AC300688915037C310F8DB4DB19DE" xlink:to="lab_us-gaap_RealEstateHeldforsale_281AC300688915037C310F8DB4DB19DE" xlink:type="arc" />
    <link:label id="lab_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B_totalLabel_en-US" xlink:label="lab_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total real estate assets</link:label>
    <link:label id="lab_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B_label_en-US" xlink:label="lab_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Real Estate Assets Total</link:label>
    <link:label id="lab_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B_documentation_en-US" xlink:label="lab_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Total net real estate assets, including investments in joint ventures.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_RealEstateAssetsTotal" xlink:label="loc_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B" xlink:to="lab_cpt_RealEstateAssetsTotal_48FAA124C6F73E34306A0F8DB4DB2A5B" xlink:type="arc" />
    <link:label id="lab_us-gaap_AccountsReceivableRelatedParties_EF721231EA29B1F1A3BA0F8DB4DB2C38_verboseLabel_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_EF721231EA29B1F1A3BA0F8DB4DB2C38" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Accounts receivable - affiliates</link:label>
    <link:label id="lab_us-gaap_AccountsReceivableRelatedParties_EF721231EA29B1F1A3BA0F8DB4DB2C38_label_en-US" xlink:label="lab_us-gaap_AccountsReceivableRelatedParties_EF721231EA29B1F1A3BA0F8DB4DB2C38" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Accounts Receivable, Related Parties</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AccountsReceivableRelatedParties" xlink:label="loc_us-gaap_AccountsReceivableRelatedParties_EF721231EA29B1F1A3BA0F8DB4DB2C38" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AccountsReceivableRelatedParties_EF721231EA29B1F1A3BA0F8DB4DB2C38" xlink:to="lab_us-gaap_AccountsReceivableRelatedParties_EF721231EA29B1F1A3BA0F8DB4DB2C38" xlink:type="arc" />
    <link:label id="lab_us-gaap_OtherAssets_4FAA6550EE31FAA42B990F8DB4DBF4BD_verboseLabel_en-US" xlink:label="lab_us-gaap_OtherAssets_4FAA6550EE31FAA42B990F8DB4DBF4BD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Other assets, net</link:label>
    <link:label id="lab_us-gaap_OtherAssets_4FAA6550EE31FAA42B990F8DB4DBF4BD_label_en-US" xlink:label="lab_us-gaap_OtherAssets_4FAA6550EE31FAA42B990F8DB4DBF4BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Other Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OtherAssets" xlink:label="loc_us-gaap_OtherAssets_4FAA6550EE31FAA42B990F8DB4DBF4BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_OtherAssets_4FAA6550EE31FAA42B990F8DB4DBF4BD" xlink:to="lab_us-gaap_OtherAssets_4FAA6550EE31FAA42B990F8DB4DBF4BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_A547D3A5D511831DBF600F8DB4DB5CD1_verboseLabel_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_A547D3A5D511831DBF600F8DB4DB5CD1" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Cash and cash equivalents</link:label>
    <link:label id="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_A547D3A5D511831DBF600F8DB4DB5CD1_label_en-US" xlink:label="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_A547D3A5D511831DBF600F8DB4DB5CD1" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Cash and Cash Equivalents, at Carrying Value</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_A547D3A5D511831DBF600F8DB4DB5CD1" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_A547D3A5D511831DBF600F8DB4DB5CD1" xlink:to="lab_us-gaap_CashAndCashEquivalentsAtCarryingValue_A547D3A5D511831DBF600F8DB4DB5CD1" xlink:type="arc" />
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalents_239FB13FD2DD4ED307040F8DB4DB15CE_terseLabel_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents_239FB13FD2DD4ED307040F8DB4DB15CE" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Restricted cash</link:label>
    <link:label id="lab_us-gaap_RestrictedCashAndCashEquivalents_239FB13FD2DD4ED307040F8DB4DB15CE_label_en-US" xlink:label="lab_us-gaap_RestrictedCashAndCashEquivalents_239FB13FD2DD4ED307040F8DB4DB15CE" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Restricted Cash and Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_RestrictedCashAndCashEquivalents" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_239FB13FD2DD4ED307040F8DB4DB15CE" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_RestrictedCashAndCashEquivalents_239FB13FD2DD4ED307040F8DB4DB15CE" xlink:to="lab_us-gaap_RestrictedCashAndCashEquivalents_239FB13FD2DD4ED307040F8DB4DB15CE" xlink:type="arc" />
    <link:label id="lab_us-gaap_Assets_DBAC620788E8253C0B790F8DB4DB76B4_totalLabel_en-US" xlink:label="lab_us-gaap_Assets_DBAC620788E8253C0B790F8DB4DB76B4" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total assets</link:label>
    <link:label id="lab_us-gaap_Assets_DBAC620788E8253C0B790F8DB4DB76B4_label_en-US" xlink:label="lab_us-gaap_Assets_DBAC620788E8253C0B790F8DB4DB76B4" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Assets</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_Assets" xlink:label="loc_us-gaap_Assets_DBAC620788E8253C0B790F8DB4DB76B4" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_Assets_DBAC620788E8253C0B790F8DB4DB76B4" xlink:to="lab_us-gaap_Assets_DBAC620788E8253C0B790F8DB4DB76B4" xlink:type="arc" />
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_97208B40950BB31D04700F8DB4DB25AD_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_97208B40950BB31D04700F8DB4DB25AD" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Liabilities and equity</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_97208B40950BB31D04700F8DB4DB25AD_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAndStockholdersEquityAbstract_97208B40950BB31D04700F8DB4DB25AD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities and Equity [Abstract]</link:label>
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    <link:label id="lab_us-gaap_LiabilitiesAbstract_CFF9720E303991970BFB0F8DB4DB379D_verboseLabel_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_CFF9720E303991970BFB0F8DB4DB379D" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Liabilities</link:label>
    <link:label id="lab_us-gaap_LiabilitiesAbstract_CFF9720E303991970BFB0F8DB4DB379D_label_en-US" xlink:label="lab_us-gaap_LiabilitiesAbstract_CFF9720E303991970BFB0F8DB4DB379D" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Liabilities [Abstract]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LiabilitiesAbstract" xlink:label="loc_us-gaap_LiabilitiesAbstract_CFF9720E303991970BFB0F8DB4DB379D" xlink:type="locator" />
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    <link:label id="lab_cpt_FairValueOfNotesReceivableAndNotesPayableTableTextBlock_CF207DBEC7520389D2AB989424D344CF_documentation_en-US" xlink:label="lab_cpt_FairValueOfNotesReceivableAndNotesPayableTableTextBlock_CF207DBEC7520389D2AB989424D344CF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Fair Value Of Notes Receivable And Notes Payable.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FairValueOfNotesReceivableAndNotesPayableTableTextBlock" xlink:label="loc_cpt_FairValueOfNotesReceivableAndNotesPayableTableTextBlock_CF207DBEC7520389D2AB989424D344CF" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NotesPayableAbstract" xlink:label="loc_us-gaap_NotesPayableAbstract_40F09962CF8A04D95069989425703158" xlink:type="locator" />
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    <link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_068A1EAB51DBE54FA5A2989425701744_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_068A1EAB51DBE54FA5A2989425701744" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Summary Of Indebtedness</link:label>
    <link:label id="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_068A1EAB51DBE54FA5A2989425701744_label_en-US" xlink:label="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_068A1EAB51DBE54FA5A2989425701744" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Schedule of Long-term Debt Instruments [Table Text Block]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ScheduleOfDebtInstrumentsTextBlock" xlink:label="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_068A1EAB51DBE54FA5A2989425701744" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ScheduleOfDebtInstrumentsTextBlock_068A1EAB51DBE54FA5A2989425701744" xlink:to="lab_us-gaap_ScheduleOfDebtInstrumentsTextBlock_068A1EAB51DBE54FA5A2989425701744" xlink:type="arc" />
    <link:label id="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_309CBC55155AF6BC11E9989425702800_terseLabel_en-US" xlink:label="lab_us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_309CBC55155AF6BC11E9989425702800" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Scheduled Repayments On Outstanding Debt</link:label>
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    <link:label id="lab_cpt_NoncontrollingInterestsAbstract_722C2101389AAFD1CCA606E3A2E8ECBF_label_en-US" xlink:label="lab_cpt_NoncontrollingInterestsAbstract_722C2101389AAFD1CCA606E3A2E8ECBF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Noncontrolling Interests [Abstract]</link:label>
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    <link:label id="lab_us-gaap_SecuredDebtMember_BB1CD3ED340E29F1A3E6989424A5418A_terseLabel_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_BB1CD3ED340E29F1A3E6989424A5418A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Secured Debt [Member]</link:label>
    <link:label id="lab_us-gaap_SecuredDebtMember_BB1CD3ED340E29F1A3E6989424A5418A_label_en-US" xlink:label="lab_us-gaap_SecuredDebtMember_BB1CD3ED340E29F1A3E6989424A5418A" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_SecuredDebtMember" xlink:label="loc_us-gaap_SecuredDebtMember_BB1CD3ED340E29F1A3E6989424A5418A" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_SecuredDebtMember_BB1CD3ED340E29F1A3E6989424A5418A" xlink:to="lab_us-gaap_SecuredDebtMember_BB1CD3ED340E29F1A3E6989424A5418A" xlink:type="arc" />
    <link:label id="lab_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD_terseLabel_en-US" xlink:label="lab_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Floating Rate Debt [Member]</link:label>
    <link:label id="lab_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD_label_en-US" xlink:label="lab_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Floating Rate Debt [Member]</link:label>
    <link:label id="lab_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD_documentation_en-US" xlink:label="lab_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Floating Rate Debt [Member]</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FloatingRateDebtMember" xlink:label="loc_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD" xlink:to="lab_cpt_FloatingRateDebtMember_046E8B5FDCB8C414F30C989424A5BFFD" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_C216D1A71D549A7F5E63989424A516AA_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_C216D1A71D549A7F5E63989424A516AA" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeAxis_C216D1A71D549A7F5E63989424A516AA_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeAxis_C216D1A71D549A7F5E63989424A516AA" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeAxis" xlink:label="loc_us-gaap_ShortTermDebtTypeAxis_C216D1A71D549A7F5E63989424A516AA" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeAxis_C216D1A71D549A7F5E63989424A516AA" xlink:to="lab_us-gaap_ShortTermDebtTypeAxis_C216D1A71D549A7F5E63989424A516AA" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_E74C7E42F38A4FB0F609989424A52811_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_E74C7E42F38A4FB0F609989424A52811" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtTypeDomain_E74C7E42F38A4FB0F609989424A52811_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtTypeDomain_E74C7E42F38A4FB0F609989424A52811" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt, Type [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtTypeDomain" xlink:label="loc_us-gaap_ShortTermDebtTypeDomain_E74C7E42F38A4FB0F609989424A52811" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtTypeDomain_E74C7E42F38A4FB0F609989424A52811" xlink:to="lab_us-gaap_ShortTermDebtTypeDomain_E74C7E42F38A4FB0F609989424A52811" xlink:type="arc" />
    <link:label id="lab_us-gaap_LetterOfCreditMember_E92CE6DB8008A87A8871989424A53FC0_terseLabel_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_E92CE6DB8008A87A8871989424A53FC0" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Letter Of Credit [Member]</link:label>
    <link:label id="lab_us-gaap_LetterOfCreditMember_E92CE6DB8008A87A8871989424A53FC0_label_en-US" xlink:label="lab_us-gaap_LetterOfCreditMember_E92CE6DB8008A87A8871989424A53FC0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Letter of Credit [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LetterOfCreditMember" xlink:label="loc_us-gaap_LetterOfCreditMember_E92CE6DB8008A87A8871989424A53FC0" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_LetterOfCreditMember_E92CE6DB8008A87A8871989424A53FC0" xlink:to="lab_us-gaap_LetterOfCreditMember_E92CE6DB8008A87A8871989424A53FC0" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShortTermDebtMember_5686377D58C3137D093A989424A582BD_terseLabel_en-US" xlink:label="lab_us-gaap_ShortTermDebtMember_5686377D58C3137D093A989424A582BD" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Short-term Debt [Member]</link:label>
    <link:label id="lab_us-gaap_ShortTermDebtMember_5686377D58C3137D093A989424A582BD_label_en-US" xlink:label="lab_us-gaap_ShortTermDebtMember_5686377D58C3137D093A989424A582BD" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Short-term Debt [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShortTermDebtMember" xlink:label="loc_us-gaap_ShortTermDebtMember_5686377D58C3137D093A989424A582BD" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShortTermDebtMember_5686377D58C3137D093A989424A582BD" xlink:to="lab_us-gaap_ShortTermDebtMember_5686377D58C3137D093A989424A582BD" xlink:type="arc" />
    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_ADA927B1B349AF68EDDC989424A50F7F_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_ADA927B1B349AF68EDDC989424A50F7F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Amount of current borrowing capacity under unsecured credit facility</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_ADA927B1B349AF68EDDC989424A50F7F_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_ADA927B1B349AF68EDDC989424A50F7F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Current Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity_ADA927B1B349AF68EDDC989424A50F7F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityExpirationDate1_BBEB982E9E202903C3F9989424A5810F_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityExpirationDate1_BBEB982E9E202903C3F9989424A5810F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unsecured Credit Facility, Expiration Date</link:label>
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    <link:label id="lab_cpt_OptionToExtendPeriodOfUnsecuredCreditFacility_DE9503E304F9B4FCDA76989424A53ACF_terseLabel_en-US" xlink:label="lab_cpt_OptionToExtendPeriodOfUnsecuredCreditFacility_DE9503E304F9B4FCDA76989424A53ACF" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Optional extension period of unsecured credit facility</link:label>
    <link:label id="lab_cpt_OptionToExtendPeriodOfUnsecuredCreditFacility_DE9503E304F9B4FCDA76989424A53ACF_label_en-US" xlink:label="lab_cpt_OptionToExtendPeriodOfUnsecuredCreditFacility_DE9503E304F9B4FCDA76989424A53ACF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Option to extend the period of unsecured credit facility</link:label>
    <link:label id="lab_cpt_OptionToExtendPeriodOfUnsecuredCreditFacility_DE9503E304F9B4FCDA76989424A53ACF_documentation_en-US" xlink:label="lab_cpt_OptionToExtendPeriodOfUnsecuredCreditFacility_DE9503E304F9B4FCDA76989424A53ACF" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Option to extend the period of unsecured credit facility.</link:label>
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    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1FF0CC033691E05B94EA989424A5CD1C_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1FF0CC033691E05B94EA989424A5CD1C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Maximum borrowing capacity under unsecured credit facility</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1FF0CC033691E05B94EA989424A5CD1C_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1FF0CC033691E05B94EA989424A5CD1C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_1FF0CC033691E05B94EA989424A5CD1C" xlink:type="locator" />
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    <link:label id="lab_cpt_TermsOfBidRateLoans_E48A524A50561B4B9ADB989424A5F48B_verboseLabel_en-US" xlink:label="lab_cpt_TermsOfBidRateLoans_E48A524A50561B4B9ADB989424A5F48B" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Maximum term of bid rate loans (days)</link:label>
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    <link:label id="lab_cpt_TermsOfBidRateLoans_E48A524A50561B4B9ADB989424A5F48B_documentation_en-US" xlink:label="lab_cpt_TermsOfBidRateLoans_E48A524A50561B4B9ADB989424A5F48B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Maximum term of bid rate loans in days related to the line of credit.  Advances under the line of credit may be priced at the scheduled rates, or we may enter into bid rate loans with participating banks at rates below the scheduled rates</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_TermsOfBidRateLoans" xlink:label="loc_cpt_TermsOfBidRateLoans_E48A524A50561B4B9ADB989424A5F48B" xlink:type="locator" />
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    <link:label id="lab_cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit_11C18F2D612778B09610989424A5DE1F_verboseLabel_en-US" xlink:label="lab_cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit_11C18F2D612778B09610989424A5DE1F" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Lesser of amount stated or the amount available under the line of credit</link:label>
    <link:label id="lab_cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit_11C18F2D612778B09610989424A5DE1F_label_en-US" xlink:label="lab_cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit_11C18F2D612778B09610989424A5DE1F" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Value not exceeding the amount available under the line of credit</link:label>
    <link:label id="lab_cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit_11C18F2D612778B09610989424A5DE1F_documentation_en-US" xlink:label="lab_cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit_11C18F2D612778B09610989424A5DE1F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Advances under the line of credit may be priced at the scheduled rates, or we may enter into bid rate loans with participating banks at rates below the scheduled rates.  These bid rate loans have terms of 180 days or less and may not exceed the lesser of $250 million or the remaining amount available under the line of credit.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit" xlink:label="loc_cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit_11C18F2D612778B09610989424A5DE1F" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LineOfCreditFacilityAmountOutstanding_AFBAA00C30843D854FD5989424A5F490_terseLabel_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityAmountOutstanding_AFBAA00C30843D854FD5989424A5F490" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Outstanding letters of credit under credit facility</link:label>
    <link:label id="lab_us-gaap_LineOfCreditFacilityAmountOutstanding_AFBAA00C30843D854FD5989424A5F490_label_en-US" xlink:label="lab_us-gaap_LineOfCreditFacilityAmountOutstanding_AFBAA00C30843D854FD5989424A5F490" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Line of Credit Facility, Amount Outstanding</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_LineOfCreditFacilityAmountOutstanding" xlink:label="loc_us-gaap_LineOfCreditFacilityAmountOutstanding_AFBAA00C30843D854FD5989424A5F490" xlink:type="locator" />
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    <link:label id="lab_us-gaap_LeaseAndRentalExpense_E3F2D6F5638726C2E4B509DB8412A8A2_verboseLabel_en-US" xlink:label="lab_us-gaap_LeaseAndRentalExpense_E3F2D6F5638726C2E4B509DB8412A8A2" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Rental expense</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_79EB4878984E4ECB12FF09DB8412A7A4_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueCurrent_79EB4878984E4ECB12FF09DB8412A7A4" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Minimum annual rental commitments, remainder of 2013</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F66DF831E9533EC37B7709DB8412C5B5_verboseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F66DF831E9533EC37B7709DB8412C5B5" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Minimum annual rental commitments, 2014</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInTwoYears_F66DF831E9533EC37B7709DB8412C5B5" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInThreeYears_5BD753362F4F9908F2C509DB8412590D" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears" xlink:label="loc_us-gaap_OperatingLeasesFutureMinimumPaymentsDueInFourYears_5FB5C74863AF098681FA09DB8412C214" xlink:type="locator" />
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    <link:label id="lab_cpt_EconomicInterestInJointVentures_BC754FED4CF9AE2E6FCD09DB84128978_terseLabel_en-US" xlink:label="lab_cpt_EconomicInterestInJointVentures_BC754FED4CF9AE2E6FCD09DB84128978" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Less than joint venture economic interest noted</link:label>
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    <link:label id="lab_cpt_ExpenseBenefitOnDeferredCompensationPlans_D7D619257BEBE0C7D4040AAD21ED596F_documentation_en-US" xlink:label="lab_cpt_ExpenseBenefitOnDeferredCompensationPlans_D7D619257BEBE0C7D4040AAD21ED596F" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This item represents the expense (benefit) on our deferred compensation plans included in earnings for the period as a result of holding marketable securities categorized as trading.  Gross presentation is based on principal vs. agent accounting for revenues as the company is the principal and gains control of the assets from the deferred compensation plan before transferring the assets to the employees and the company's performance obligation is to provide the assets to the employees.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_ExpenseBenefitOnDeferredCompensationPlans" xlink:label="loc_cpt_ExpenseBenefitOnDeferredCompensationPlans_D7D619257BEBE0C7D4040AAD21ED596F" xlink:type="locator" />
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    <link:label id="lab_cpt_TotalOtherExpenses_190801251A7FBE6936FF0AAD21EDEE55_totalLabel_en-US" xlink:label="lab_cpt_TotalOtherExpenses_190801251A7FBE6936FF0AAD21EDEE55" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Total other expenses</link:label>
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    <link:label id="lab_cpt_TotalOtherExpenses_190801251A7FBE6936FF0AAD21EDEE55_documentation_en-US" xlink:label="lab_cpt_TotalOtherExpenses_190801251A7FBE6936FF0AAD21EDEE55" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">This element represents a sum total of property management, fee and asset management, general and administrative, interest, depreciation and amortization, amortization of deferred financing costs, and expense (benefit) on deferred compensation plans.</link:label>
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    <link:label id="lab_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss_72A393068F5062698A2C0AAD21EDE36A_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationStepAcquisitionEquityInterestInAcquireeRemeasurementGainOrLoss_72A393068F5062698A2C0AAD21EDE36A" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Gain on acquisition of controlling interest in joint ventures</link:label>
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    <link:label id="lab_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_2A84F98A3968D5718CC00AAD21ED4AAE_verboseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions_2A84F98A3968D5718CC00AAD21ED4AAE" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Equity in income of joint ventures</link:label>
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    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_B1C839ECBCC9DCE7E6A20AAD21ED0D23_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_B1C839ECBCC9DCE7E6A20AAD21ED0D23" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income from continuing operations before income taxes</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_B1C839ECBCC9DCE7E6A20AAD21ED0D23_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic_B1C839ECBCC9DCE7E6A20AAD21ED0D23" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations before Income Taxes, Domestic</link:label>
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    <link:label id="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_93FAA97D58CBFE4FEA170AAD21ED2113_negatedLabel_en-US" xlink:label="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_93FAA97D58CBFE4FEA170AAD21ED2113" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Income tax expense</link:label>
    <link:label id="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_93FAA97D58CBFE4FEA170AAD21ED2113_label_en-US" xlink:label="lab_us-gaap_CurrentIncomeTaxExpenseBenefit_93FAA97D58CBFE4FEA170AAD21ED2113" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Current Income Tax Expense (Benefit)</link:label>
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    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_B1AB386D3F55724F9B8C0AAD21EDD361_totalLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_B1AB386D3F55724F9B8C0AAD21EDD361" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Income from continuing operations</link:label>
    <link:label id="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_B1AB386D3F55724F9B8C0AAD21EDD361_label_en-US" xlink:label="lab_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_B1AB386D3F55724F9B8C0AAD21EDD361" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest_B1AB386D3F55724F9B8C0AAD21EDD361" xlink:type="locator" />
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    <link:label id="lab_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_BA9D7059E3329E77F9630AAD21ED0707_terseLabel_en-US" xlink:label="lab_us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationDuringPhaseOutPeriodNetOfTax_BA9D7059E3329E77F9630AAD21ED0707" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Income from discontinued operations</link:label>
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    <link:label id="lab_us-gaap_ProfitLoss_41AD763E2BDC9E2B1C880AAD21ED4112_totalLabel_en-US" xlink:label="lab_us-gaap_ProfitLoss_41AD763E2BDC9E2B1C880AAD21ED4112" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">Net income</link:label>
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    <link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2A3665EFCEEDDEB43D590AAD21EDFFC9_negatedLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2A3665EFCEEDDEB43D590AAD21EDFFC9" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less income allocated to non-controlling interests from continuing operations</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2A3665EFCEEDDEB43D590AAD21EDFFC9_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2A3665EFCEEDDEB43D590AAD21EDFFC9" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2A3665EFCEEDDEB43D590AAD21EDFFC9" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2A3665EFCEEDDEB43D590AAD21EDFFC9" xlink:to="lab_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_2A3665EFCEEDDEB43D590AAD21EDFFC9" xlink:type="arc" />
    <link:label id="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest_9847B59EEEB92B1C667D0AAD21EDF132_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest_9847B59EEEB92B1C667D0AAD21EDF132" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Less income, including gain on sale, allocated to non-controlling interests from discontinued operations</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest" xlink:label="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest_9847B59EEEB92B1C667D0AAD21EDF132" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest_9847B59EEEB92B1C667D0AAD21EDF132" xlink:to="lab_us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToNoncontrollingInterest_9847B59EEEB92B1C667D0AAD21EDF132" xlink:type="arc" />
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_8B5777378135AC48BA470AAD21EDC7EF_negatedLabel_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_8B5777378135AC48BA470AAD21EDC7EF" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Less income allocated to perpetual preferred units</link:label>
    <link:label id="lab_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_8B5777378135AC48BA470AAD21EDC7EF_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_8B5777378135AC48BA470AAD21EDC7EF" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Redeemable Noncontrolling Interest</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest" xlink:label="loc_us-gaap_NetIncomeLossAttributableToRedeemableNoncontrollingInterest_8B5777378135AC48BA470AAD21EDC7EF" xlink:type="locator" />
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    <link:label id="lab_cpt_Diversificationofshareawards_F195BEFBE4D3DD0F9F7F10201BC152E5_documentation_en-US" xlink:label="lab_cpt_Diversificationofshareawards_F195BEFBE4D3DD0F9F7F10201BC152E5" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The value of share awards diversified into other equity securities following the amendment of the Non-Qualified Deferred Compensation plan.</link:label>
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    <link:label id="lab_cpt_FairvalueofassetsandliabilitiesacquiredAbstract_DC408FE679F670E0C7BB522E51D86076_label_en-US" xlink:label="lab_cpt_FairvalueofassetsandliabilitiesacquiredAbstract_DC408FE679F670E0C7BB522E51D86076" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fair value of assets and liabilities acquired [Abstract]</link:label>
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    <link:label id="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings_FC89938A0BB20AB88EF8522E51D85CB5_terseLabel_en-US" xlink:label="lab_us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedBuildings_FC89938A0BB20AB88EF8522E51D85CB5" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Buildings and improvements</link:label>
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    <link:label id="lab_us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_10A314AD0A0649E862F70F8DB47D2620_terseLabel_en-US" xlink:label="lab_us-gaap_FiniteLivedIntangibleAssetAcquiredInPlaceLeases_10A314AD0A0649E862F70F8DB47D2620" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Unamortized value of in-place leases</link:label>
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    <link:label id="lab_cpt_FivePointFourFivePercentageNotesDue2013Member_C2CDAEE1054BB3454F9E06E24607BB47_terseLabel_en-US" xlink:label="lab_cpt_FivePointFourFivePercentageNotesDue2013Member_C2CDAEE1054BB3454F9E06E24607BB47" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.45% Notes Due 2013 [Member]</link:label>
    <link:label id="lab_cpt_FivePointFourFivePercentageNotesDue2013Member_C2CDAEE1054BB3454F9E06E24607BB47_label_en-US" xlink:label="lab_cpt_FivePointFourFivePercentageNotesDue2013Member_C2CDAEE1054BB3454F9E06E24607BB47" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Five Point Four Five Percentage Notes Due2013 [Member]</link:label>
    <link:label id="lab_cpt_FivePointFourFivePercentageNotesDue2013Member_C2CDAEE1054BB3454F9E06E24607BB47_documentation_en-US" xlink:label="lab_cpt_FivePointFourFivePercentageNotesDue2013Member_C2CDAEE1054BB3454F9E06E24607BB47" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five Point Four Five Percentage Notes Due 2013.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FivePointFourFivePercentageNotesDue2013Member" xlink:label="loc_cpt_FivePointFourFivePercentageNotesDue2013Member_C2CDAEE1054BB3454F9E06E24607BB47" xlink:type="locator" />
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    <link:label id="lab_cpt_FivePointZeroEightPercentageNotesDue2015Member_ECF7EFD67337C22C9D4506E246071AD2_terseLabel_en-US" xlink:label="lab_cpt_FivePointZeroEightPercentageNotesDue2015Member_ECF7EFD67337C22C9D4506E246071AD2" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.08% Notes Due 2015 [Member]</link:label>
    <link:label id="lab_cpt_FivePointZeroEightPercentageNotesDue2015Member_ECF7EFD67337C22C9D4506E246071AD2_label_en-US" xlink:label="lab_cpt_FivePointZeroEightPercentageNotesDue2015Member_ECF7EFD67337C22C9D4506E246071AD2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Five Point Zero Eight Percentage Notes Due2015 [Member]</link:label>
    <link:label id="lab_cpt_FivePointZeroEightPercentageNotesDue2015Member_ECF7EFD67337C22C9D4506E246071AD2_documentation_en-US" xlink:label="lab_cpt_FivePointZeroEightPercentageNotesDue2015Member_ECF7EFD67337C22C9D4506E246071AD2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five Point Zero Eight Percentage Notes Due 2015 Member.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FivePointZeroEightPercentageNotesDue2015Member" xlink:label="loc_cpt_FivePointZeroEightPercentageNotesDue2015Member_ECF7EFD67337C22C9D4506E246071AD2" xlink:type="locator" />
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    <link:label id="lab_cpt_FivePointSevenFivePercentageNotesDue2017Member_660F48D6AA53EA8FA71506E24607D101_terseLabel_en-US" xlink:label="lab_cpt_FivePointSevenFivePercentageNotesDue2017Member_660F48D6AA53EA8FA71506E24607D101" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.75% Notes Due 2017 [Member]</link:label>
    <link:label id="lab_cpt_FivePointSevenFivePercentageNotesDue2017Member_660F48D6AA53EA8FA71506E24607D101_label_en-US" xlink:label="lab_cpt_FivePointSevenFivePercentageNotesDue2017Member_660F48D6AA53EA8FA71506E24607D101" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Five Point Seven Five Percentage Notes Due2017 [Member]</link:label>
    <link:label id="lab_cpt_FivePointSevenFivePercentageNotesDue2017Member_660F48D6AA53EA8FA71506E24607D101_documentation_en-US" xlink:label="lab_cpt_FivePointSevenFivePercentageNotesDue2017Member_660F48D6AA53EA8FA71506E24607D101" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five Point Seven Five Percentage Notes Due 2017.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FivePointSevenFivePercentageNotesDue2017Member" xlink:label="loc_cpt_FivePointSevenFivePercentageNotesDue2017Member_660F48D6AA53EA8FA71506E24607D101" xlink:type="locator" />
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    <link:label id="lab_cpt_FourPointSevenZeroPercentageNotesDue2021Member_7D62C41897B2A151B95106E246070559_terseLabel_en-US" xlink:label="lab_cpt_FourPointSevenZeroPercentageNotesDue2021Member_7D62C41897B2A151B95106E246070559" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">4.70% Notes Due 2021 [Member]</link:label>
    <link:label id="lab_cpt_FourPointSevenZeroPercentageNotesDue2021Member_7D62C41897B2A151B95106E246070559_label_en-US" xlink:label="lab_cpt_FourPointSevenZeroPercentageNotesDue2021Member_7D62C41897B2A151B95106E246070559" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Four Point Seven Zero Percentage Notes Due2021 [Member]</link:label>
    <link:label id="lab_cpt_FourPointSevenZeroPercentageNotesDue2021Member_7D62C41897B2A151B95106E246070559_documentation_en-US" xlink:label="lab_cpt_FourPointSevenZeroPercentageNotesDue2021Member_7D62C41897B2A151B95106E246070559" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Four Point Seven Zero Percentage Notes Due 2021 [Member]</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FourPointSevenZeroPercentageNotesDue2021Member" xlink:label="loc_cpt_FourPointSevenZeroPercentageNotesDue2021Member_7D62C41897B2A151B95106E246070559" xlink:type="locator" />
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    <link:label id="lab_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC_terseLabel_en-US" xlink:label="lab_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">3.07% Notes Due 2022 [Member]</link:label>
    <link:label id="lab_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC_label_en-US" xlink:label="lab_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Three Point Zero Seven Percentage Notes Due 2022 [Member] [Domain]</link:label>
    <link:label id="lab_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC_documentation_en-US" xlink:label="lab_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Three Point Zero Seven Percentage Notes Due 2022 [Member] [Domain]</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain" xlink:label="loc_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC" xlink:to="lab_cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain_1B037D5182B3CEEF757E06E2460794BC" xlink:type="arc" />
    <link:label id="lab_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3_terseLabel_en-US" xlink:label="lab_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">5.00% Notes Due 2023 [Member]</link:label>
    <link:label id="lab_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3_label_en-US" xlink:label="lab_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Five Point Zero Zero Percentage Notes Due 2023 [Member]</link:label>
    <link:label id="lab_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3_documentation_en-US" xlink:label="lab_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Five Point Zero Zero Percentage Notes Due 2023</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FivePointZeroZeroPercentageNotesDue2023Member" xlink:label="loc_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3" xlink:to="lab_cpt_FivePointZeroZeroPercentageNotesDue2023Member_CFB668B711BD5828F53906E246172AA3" xlink:type="arc" />
    <link:label id="lab_cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain_233277552DEA36A5B07A06E246172278_terseLabel_en-US" xlink:label="lab_cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain_233277552DEA36A5B07A06E246172278" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">1.00% - 6.00% Conventional Mortgage Notes, Due 2014 - 2045</link:label>
    <link:label id="lab_cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain_233277552DEA36A5B07A06E246172278_label_en-US" xlink:label="lab_cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain_233277552DEA36A5B07A06E246172278" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Secured Notes One Point Zero Two Percentage To Six Point Zero Zero Percentage Conventional Mortgage Notes Due Two Thousand Fourteen Till Two Thousand Forty Five [Domain]</link:label>
    <link:label id="lab_cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain_233277552DEA36A5B07A06E246172278_documentation_en-US" xlink:label="lab_cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain_233277552DEA36A5B07A06E246172278" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Secured Notes One Point Zero Two Percentage To Six Point Zero Zero Percentage Conventional Mortgage Notes Due Two Thousand Fourteen Till Two Thousand Forty Five</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain" xlink:label="loc_cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain_233277552DEA36A5B07A06E246172278" xlink:type="locator" />
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    <link:label id="lab_cpt_SecuredNotesOnePointTwoNinePercentageTaxExemptMortgageNoteDueTwoThousandTwentyEightMember_5A48BF6FAB913EF0690F06E246176C64_terseLabel_en-US" xlink:label="lab_cpt_SecuredNotesOnePointTwoNinePercentageTaxExemptMortgageNoteDueTwoThousandTwentyEightMember_5A48BF6FAB913EF0690F06E246176C64" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Tax-Exempt Mortgage Note Due 2028 (1.26% floating rate)</link:label>
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    <link:label id="lab_cpt_SecuredNotesOnePointTwoNinePercentageTaxExemptMortgageNoteDueTwoThousandTwentyEightMember_5A48BF6FAB913EF0690F06E246176C64_documentation_en-US" xlink:label="lab_cpt_SecuredNotesOnePointTwoNinePercentageTaxExemptMortgageNoteDueTwoThousandTwentyEightMember_5A48BF6FAB913EF0690F06E246176C64" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Secured Notes One Point Two Nine Percentage Tax Exempt Mortgage Note Due Two Thousand Twenty Eight [Member]</link:label>
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    <link:label id="lab_cpt_SecuredNotesOnePointZeroZeroPercentageFloatingRateMember_0FC5D32BDF2EFE01B70606E2461710A9_terseLabel_en-US" xlink:label="lab_cpt_SecuredNotesOnePointZeroZeroPercentageFloatingRateMember_0FC5D32BDF2EFE01B70606E2461710A9" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Other Floating Rate Debt Included In Secured Notes (1.00%)</link:label>
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    <link:label id="lab_cpt_SecuredNotesOnePointZeroZeroPercentageFloatingRateMember_0FC5D32BDF2EFE01B70606E2461710A9_documentation_en-US" xlink:label="lab_cpt_SecuredNotesOnePointZeroZeroPercentageFloatingRateMember_0FC5D32BDF2EFE01B70606E2461710A9" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Secured Notes One Point Zero Zero Percentage Floating Rate [Member]</link:label>
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    <link:label id="lab_cpt_CommercialBanksMember_BEDA35D53473DF7AF03806E246172363_terseLabel_en-US" xlink:label="lab_cpt_CommercialBanksMember_BEDA35D53473DF7AF03806E246172363" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Commercial Banks [Member]</link:label>
    <link:label id="lab_cpt_CommercialBanksMember_BEDA35D53473DF7AF03806E246172363_label_en-US" xlink:label="lab_cpt_CommercialBanksMember_BEDA35D53473DF7AF03806E246172363" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Commercial Banks [Member]</link:label>
    <link:label id="lab_cpt_CommercialBanksMember_BEDA35D53473DF7AF03806E246172363_documentation_en-US" xlink:label="lab_cpt_CommercialBanksMember_BEDA35D53473DF7AF03806E246172363" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Commercial Banks.</link:label>
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    <link:label id="lab_cpt_SeniorUnsecuredNotesMember_170496C5DEE2A967F03806E24617A5FC_terseLabel_en-US" xlink:label="lab_cpt_SeniorUnsecuredNotesMember_170496C5DEE2A967F03806E24617A5FC" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Senior Unsecured Notes [Member]</link:label>
    <link:label id="lab_cpt_SeniorUnsecuredNotesMember_170496C5DEE2A967F03806E24617A5FC_label_en-US" xlink:label="lab_cpt_SeniorUnsecuredNotesMember_170496C5DEE2A967F03806E24617A5FC" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Senior Unsecured Notes [Member]</link:label>
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    <link:label id="lab_us-gaap_PaymentsToDevelopRealEstateAssets_62D767EB7603188AEB140A896A3F91BC_negatedLabel_en-US" xlink:label="lab_us-gaap_PaymentsToDevelopRealEstateAssets_62D767EB7603188AEB140A896A3F91BC" xlink:role="http://www.xbrl.org/2009/role/negatedLabel" xlink:type="resource" xml:lang="en-US">Development and capital improvements</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_87577C6A0BB9A8F8F2DC0A896A3F6334_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_87577C6A0BB9A8F8F2DC0A896A3F6334" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from sale of land and discontinued operations</link:label>
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_PaymentsToAcquireInterestInJointVenture" xlink:label="loc_us-gaap_PaymentsToAcquireInterestInJointVenture_9B8392F34D9FA77862FB0A896A3FC0CE" xlink:type="locator" />
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    <link:label id="lab_cpt_TwoThousandElevenShareIncentivePlanMember_12E293FA3198DC19B4D50F8DB400927B_terseLabel_en-US" xlink:label="lab_cpt_TwoThousandElevenShareIncentivePlanMember_12E293FA3198DC19B4D50F8DB400927B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">2011 Share Incentive Plan [Member]</link:label>
    <link:label id="lab_cpt_TwoThousandElevenShareIncentivePlanMember_12E293FA3198DC19B4D50F8DB400927B_label_en-US" xlink:label="lab_cpt_TwoThousandElevenShareIncentivePlanMember_12E293FA3198DC19B4D50F8DB400927B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Two Thousand Eleven Share Incentive Plan [Member]</link:label>
    <link:label id="lab_cpt_TwoThousandElevenShareIncentivePlanMember_12E293FA3198DC19B4D50F8DB400927B_documentation_en-US" xlink:label="lab_cpt_TwoThousandElevenShareIncentivePlanMember_12E293FA3198DC19B4D50F8DB400927B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">2011 Share Incentive Plan [Member]</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_TwoThousandElevenShareIncentivePlanMember" xlink:label="loc_cpt_TwoThousandElevenShareIncentivePlanMember_12E293FA3198DC19B4D50F8DB400927B" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AwardTypeAxis_A6750DDB9F0058969D9F0F8DB400C894_terseLabel_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_A6750DDB9F0058969D9F0F8DB400C894" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:label id="lab_us-gaap_AwardTypeAxis_A6750DDB9F0058969D9F0F8DB400C894_label_en-US" xlink:label="lab_us-gaap_AwardTypeAxis_A6750DDB9F0058969D9F0F8DB400C894" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Award Type [Axis]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_AwardTypeAxis" xlink:label="loc_us-gaap_AwardTypeAxis_A6750DDB9F0058969D9F0F8DB400C894" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_AwardTypeAxis_A6750DDB9F0058969D9F0F8DB400C894" xlink:to="lab_us-gaap_AwardTypeAxis_A6750DDB9F0058969D9F0F8DB400C894" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_DF22F9F1399E586E22110F8DB400709B_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_DF22F9F1399E586E22110F8DB400709B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Award Type [Domain]</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_DF22F9F1399E586E22110F8DB400709B_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_DF22F9F1399E586E22110F8DB400709B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Equity Award [Domain]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_DF22F9F1399E586E22110F8DB400709B" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_DF22F9F1399E586E22110F8DB400709B" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardAwardTypeAndPlanNameDomain_DF22F9F1399E586E22110F8DB400709B" xlink:type="arc" />
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_E5CC4D0C924B5B4A8B970F8DB400DD2C_terseLabel_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_E5CC4D0C924B5B4A8B970F8DB400DD2C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options [Member]</link:label>
    <link:label id="lab_us-gaap_EmployeeStockOptionMember_E5CC4D0C924B5B4A8B970F8DB400DD2C_label_en-US" xlink:label="lab_us-gaap_EmployeeStockOptionMember_E5CC4D0C924B5B4A8B970F8DB400DD2C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Employee Stock Option [Member]</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_EmployeeStockOptionMember" xlink:label="loc_us-gaap_EmployeeStockOptionMember_E5CC4D0C924B5B4A8B970F8DB400DD2C" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_EmployeeStockOptionMember_E5CC4D0C924B5B4A8B970F8DB400DD2C" xlink:to="lab_us-gaap_EmployeeStockOptionMember_E5CC4D0C924B5B4A8B970F8DB400DD2C" xlink:type="arc" />
    <link:label id="lab_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81_terseLabel_en-US" xlink:label="lab_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Share Awards and Vesting [Member]</link:label>
    <link:label id="lab_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81_label_en-US" xlink:label="lab_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share Awards And Vesting [Member]</link:label>
    <link:label id="lab_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81_documentation_en-US" xlink:label="lab_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Share Awards and Vesting [Member]</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_ShareAwardsAndVestingMember" xlink:label="loc_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81" xlink:to="lab_cpt_ShareAwardsAndVestingMember_1C20CF78B487555005D50F8DB400DC81" xlink:type="arc" />
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_94F34E1C29BB2A5BC3250F8DB4008B77_terseLabel_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_94F34E1C29BB2A5BC3250F8DB4008B77" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Total fungible units to be issued</link:label>
    <link:label id="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_94F34E1C29BB2A5BC3250F8DB4008B77_label_en-US" xlink:label="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_94F34E1C29BB2A5BC3250F8DB4008B77" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant" xlink:label="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_94F34E1C29BB2A5BC3250F8DB4008B77" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_94F34E1C29BB2A5BC3250F8DB4008B77" xlink:to="lab_us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant_94F34E1C29BB2A5BC3250F8DB4008B77" xlink:type="arc" />
    <link:label id="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74_terseLabel_en-US" xlink:label="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Units available under the 2011 Share Plan</link:label>
    <link:label id="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74_label_en-US" xlink:label="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Fungible Unit Authorized To Issue Under Share Based Compensation Plan</link:label>
    <link:label id="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74_documentation_en-US" xlink:label="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Shares reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable, specifically for the 2011 Share Plan, which superseded the 2002 Share Plan.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan" xlink:label="loc_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74" xlink:to="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan_12C62CD02A356BEBEBD90F8DB400DA74" xlink:type="arc" />
    <link:label id="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364_terseLabel_en-US" xlink:label="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fungible units transferred from the 2002 Share Plan to the 2011 Share Plan</link:label>
    <link:label id="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364_label_en-US" xlink:label="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Number Of Fungible Unit Authorized To Issue Under Share Based Compensation Plans</link:label>
    <link:label id="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364_documentation_en-US" xlink:label="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Shares reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable, specifically from the 2002 Share Plan, which has been superseded by the 2011 Share Plan.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans" xlink:label="loc_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364" xlink:type="locator" />
    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364" xlink:to="lab_cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans_9ADBC4BF01A38531EEE50F8DB4005364" xlink:type="arc" />
    <link:label id="lab_cpt_FungibleUnitsToFullValueAwardConversionRatio_282E293E35CCA11E00740F8DB400647C_terseLabel_en-US" xlink:label="lab_cpt_FungibleUnitsToFullValueAwardConversionRatio_282E293E35CCA11E00740F8DB400647C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Fungible Units To Full Value Award Conversion Ratio</link:label>
    <link:label id="lab_cpt_FungibleUnitsToFullValueAwardConversionRatio_282E293E35CCA11E00740F8DB400647C_label_en-US" xlink:label="lab_cpt_FungibleUnitsToFullValueAwardConversionRatio_282E293E35CCA11E00740F8DB400647C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Fungible Units To Full Value Award Conversion Ratio</link:label>
    <link:label id="lab_cpt_FungibleUnitsToFullValueAwardConversionRatio_282E293E35CCA11E00740F8DB400647C_documentation_en-US" xlink:label="lab_cpt_FungibleUnitsToFullValueAwardConversionRatio_282E293E35CCA11E00740F8DB400647C" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The award conversion ratio regarding the shares from the 2002 share incentive plan transferred into the 2011 share incentive plan.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_FungibleUnitsToFullValueAwardConversionRatio" xlink:label="loc_cpt_FungibleUnitsToFullValueAwardConversionRatio_282E293E35CCA11E00740F8DB400647C" xlink:type="locator" />
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    <link:label id="lab_cpt_ExpirationValueOfOptionRightOrOtherAward_E190764544A5944DD9510F8DB4006C7B_terseLabel_en-US" xlink:label="lab_cpt_ExpirationValueOfOptionRightOrOtherAward_E190764544A5944DD9510F8DB4006C7B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Expiration value of option right or other award</link:label>
    <link:label id="lab_cpt_ExpirationValueOfOptionRightOrOtherAward_E190764544A5944DD9510F8DB4006C7B_label_en-US" xlink:label="lab_cpt_ExpirationValueOfOptionRightOrOtherAward_E190764544A5944DD9510F8DB4006C7B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Expiration Value Of Option Right Or Other Award</link:label>
    <link:label id="lab_cpt_ExpirationValueOfOptionRightOrOtherAward_E190764544A5944DD9510F8DB4006C7B_documentation_en-US" xlink:label="lab_cpt_ExpirationValueOfOptionRightOrOtherAward_E190764544A5944DD9510F8DB4006C7B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">An option, right, or other award which does not deliver the full value at date of grant and expires five years or less from the date of grant counts against the Fungible Pool Limit as this portion of a fungible pool unit</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_ExpirationValueOfOptionRightOrOtherAward" xlink:label="loc_cpt_ExpirationValueOfOptionRightOrOtherAward_E190764544A5944DD9510F8DB4006C7B" xlink:type="locator" />
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    <link:label id="lab_cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards_DA8ADCD6225AD38D4C360F8DB400E93E_verboseLabel_en-US" xlink:label="lab_cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards_DA8ADCD6225AD38D4C360F8DB400E93E" xlink:role="http://www.xbrl.org/2003/role/verboseLabel" xlink:type="resource" xml:lang="en-US">Common shares which could be granted pursuant to full value awards</link:label>
    <link:label id="lab_cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards_DA8ADCD6225AD38D4C360F8DB400E93E_label_en-US" xlink:label="lab_cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards_DA8ADCD6225AD38D4C360F8DB400E93E" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Common Shares Which Could Be Granted Pursuant To Full Value Awards</link:label>
    <link:label id="lab_cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards_DA8ADCD6225AD38D4C360F8DB400E93E_documentation_en-US" xlink:label="lab_cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards_DA8ADCD6225AD38D4C360F8DB400E93E" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">Common shares which could be granted pursuant to full value awards based on the 3.45 to 1.0 fungible unit-to-full value award conversion ratio.</link:label>
    <link:loc xlink:href="cpt-20130930.xsd#cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards" xlink:label="loc_cpt_CommonSharesWhichCouldBeGrantedPursuantToFullValueAwards_DA8ADCD6225AD38D4C360F8DB400E93E" xlink:type="locator" />
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    <link:label id="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_0A41E41E337289C5B4750F8DB4008395_terseLabel_en-US" xlink:label="lab_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_0A41E41E337289C5B4750F8DB4008395" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Options exercised during the period</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2013/elts/us-gaap-2013-01-31.xsd#us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised" xlink:label="loc_us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised_0A41E41E337289C5B4750F8DB4008395" xlink:type="locator" />
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    <link:label id="lab_invest_InvestmentOptionsExercisePrice_A0862795D014CBEB8EA80F8DB400A93C_terseLabel_en-US" xlink:label="lab_invest_InvestmentOptionsExercisePrice_A0862795D014CBEB8EA80F8DB400A93C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Exercise price range for options exercised during the period</link:label>
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