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  <xsd:element id="cpt_NumberOfApartmentUnitsInWhollyOwnedPropertyAcquired" name="NumberOfApartmentUnitsInWhollyOwnedPropertyAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan" name="NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlan" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans" name="NumberOfFungibleUnitAuthorizedToIssueUnderShareBasedCompensationPlans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_NumberOfJointVenturesAccountedForUnderEquityMethodInvestments" name="NumberOfJointVenturesAccountedForUnderEquityMethodInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_NumberOfMultifamilyCommunities" name="NumberOfMultifamilyCommunities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_NumberOfMultifamilyPropertiesUnderDevelopment" name="NumberOfMultifamilyPropertiesUnderDevelopment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_NumberOfOperatingPropertiesAcquired" name="NumberOfOperatingPropertiesAcquired" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_NumberOfOperatingPropertiesSold" name="NumberOfOperatingPropertiesSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_OptionToExtendPeriodOfUnsecuredCreditFacility" name="OptionToExtendPeriodOfUnsecuredCreditFacility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_ParticipantWithdrawalsFromDeferredCompensationPlanInvestments" name="ParticipantWithdrawalsFromDeferredCompensationPlanInvestments" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpt_Proceedsfromdispositionincludedinrestrictedcash" name="Proceedsfromdispositionincludedinrestrictedcash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpt_Promotedequityinterest" name="Promotedequityinterest" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpt_PropertiesUnderDevelopmentIncludingLand" name="PropertiesUnderDevelopmentIncludingLand" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpt_PropertyAcquisitionsDiscontinuedOperationsAndAssetsHeldForSaleAbstract" name="PropertyAcquisitionsDiscontinuedOperationsAndAssetsHeldForSaleAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_PropertyAcquisitionsDispositionsDiscontinuedOperationsAndAssetsHeldForSaleDisclosureTextBlock" name="PropertyAcquisitionsDispositionsDiscontinuedOperationsAndAssetsHeldForSaleDisclosureTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_RangeOfExercisePricesFortyFivePointFiveThreeToSixtyTwoPointThreeTwoMember" name="RangeOfExercisePricesFortyFivePointFiveThreeToSixtyTwoPointThreeTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_RangeOfExercisePricesFortyTwoPointNineZeroToFortyThreePointNineFourMember" name="RangeOfExercisePricesFortyTwoPointNineZeroToFortyThreePointNineFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_RangeOfExercisePricesThirtyPointZeroSixToFortyOnePointOneSixMember" name="RangeOfExercisePricesThirtyPointZeroSixToFortyOnePointOneSixMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_RealEstateAssetsAtCostTotal" name="RealEstateAssetsAtCostTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpt_RealEstateAssetsTotal" name="RealEstateAssetsTotal" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpt_ReclassificationOfPriorServiceCostAndLoss" name="ReclassificationOfPriorServiceCostAndLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpt_RedemptionOfPerpetualPreferredUnits" name="RedemptionOfPerpetualPreferredUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_RefundabilityOfDepositAxis" name="RefundabilityOfDepositAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_RefundabilityOfDepositDomain" name="RefundabilityOfDepositDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_RevenuesFromDiscontinuedOperationsAttributableToUnconsolidatedJointVenture" name="RevenuesFromDiscontinuedOperationsAttributableToUnconsolidatedJointVenture" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpt_Revenuespriortosaleofoperatingpropertiesinunconsolidatedjointventures" name="Revenuespriortosaleofoperatingpropertiesinunconsolidatedjointventures" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpt_RevenuesrecognizedrelatedtobelowmarketleasesandamortizationexpenserelatedtoinplaceleasesTableTextBlock" name="RevenuesrecognizedrelatedtobelowmarketleasesandamortizationexpenserelatedtoinplaceleasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_Saleof14operatingpropertieswithinanunconsolidatedjointventureinMay2013Member" name="Saleof14operatingpropertieswithinanunconsolidatedjointventureinMay2013Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_Saleof7operatingpropertieswithintwounconsolidatedjointventuresin2012Member" name="Saleof7operatingpropertieswithintwounconsolidatedjointventuresin2012Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_SalesPriceOfPropertyPurchased" name="SalesPriceOfPropertyPurchased" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpt_ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAndIntrinsicValueTableTextBlock" name="ScheduleOfShareBasedCompensationSharesAuthorizedUnderStockOptionPlansByExercisePriceRangeAndIntrinsicValueTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_ScheduleofunamortizedbelowmarketleasesandinplaceleasesTableTextBlock" name="ScheduleofunamortizedbelowmarketleasesandinplaceleasesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_SecuredNotesOnePointTwoNinePercentageTaxExemptMortgageNoteDueTwoThousandTwentyEightMember" name="SecuredNotesOnePointTwoNinePercentageTaxExemptMortgageNoteDueTwoThousandTwentyEightMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain" name="SecuredNotesOnePointZeroTwoPercentageToSixPointZeroZeroPercentageConventionalMortgageNotesDueTwoThousandFourteenTillTwoThousandFortyFiveDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_SecuredNotesOnePointZeroZeroPercentageFloatingRateMember" name="SecuredNotesOnePointZeroZeroPercentageFloatingRateMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_SeniorUnsecuredNotesMember" name="SeniorUnsecuredNotesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_ShareAwardsAndVestingMember" name="ShareAwardsAndVestingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationCostForPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardCompensationCostForPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice" name="ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeExercisableOptionsWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePrice" name="ShareBasedCompensationSharesAuthorizedUnderStockOptionsPlansExercisePriceRangeOutstandingOptionsWeightedAverageExercisePrice" nillable="true" substitutionGroup="xbrli:item" type="num:perShareItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="cpt_ShareOfferingProgramAxis" name="ShareOfferingProgramAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_ShareOfferingProgramDomain" name="ShareOfferingProgramDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_SharesAuthorized" name="SharesAuthorized" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_TermsOfBidRateLoans" name="TermsOfBidRateLoans" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_ThreePointZeroSevenPercentageNotesDue2022MemberDomain" name="ThreePointZeroSevenPercentageNotesDue2022MemberDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_TotalNonPropertyIncomeLoss" name="TotalNonPropertyIncomeLoss" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="cpt_TotalNumberOfApartmentHomesInMultifamilyCommunities" name="TotalNumberOfApartmentHomesInMultifamilyCommunities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_TotalNumberOfApartmentHomesInMultifamilyPropertiesUponCompletionOfDevelopment" name="TotalNumberOfApartmentHomesInMultifamilyPropertiesUponCompletionOfDevelopment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_TotalOtherExpenses" name="TotalOtherExpenses" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_TwoThousandElevenShareIncentivePlanMember" name="TwoThousandElevenShareIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="cpt_TwoThousandTwelveAtmProgramMember" name="TwoThousandTwelveAtmProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="cpt_UnamortizedValueOfAboveOrBelowMarketLeases" name="UnamortizedValueOfAboveOrBelowMarketLeases" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
  <xsd:element id="cpt_ValueNotExceedingAmountAvailableUnderLineOfCredit" name="ValueNotExceedingAmountAvailableUnderLineOfCredit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="cpt_WeightedAverageMaturityOfIndebtednessIncludingUnsecuredLineOfCredit" name="WeightedAverageMaturityOfIndebtednessIncludingUnsecuredLineOfCredit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:decimalItemType" xbrli:periodType="instant" />
  <xsd:element id="cpt_WriteOffOfOriginalIssuanceCostsOfRedeemedPerpetualPreferredUnits" name="WriteOffOfOriginalIssuanceCostsOfRedeemedPerpetualPreferredUnits" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
</xsd:schema>
