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  <xs:element id="pkst_AccruedPropertyOperatingExpenses" abstract="false" name="AccruedPropertyOperatingExpenses" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_AccruedTenantObligations" abstract="false" name="AccruedTenantObligations" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_AccruedConstructionInProgress" abstract="false" name="AccruedConstructionInProgress" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_MutualFundsAssetFairValueDisclosure" abstract="false" name="MutualFundsAssetFairValueDisclosure" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_ATMProgramMember" abstract="true" name="ATMProgramMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_RestrictedSharesMember" abstract="true" name="RestrictedSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_CommonStockSharesIssuedNotDisclosed" abstract="false" name="CommonStockSharesIssuedNotDisclosed" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:booleanItemType"/>
  <xs:element id="pkst_SaleOfStockSharesAuthorized" abstract="false" name="SaleOfStockSharesAuthorized" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_PropertyContributionsByPreviouslyAffiliatedPartiesAndUnaffiliatedThirdPartiesMember" abstract="true" name="PropertyContributionsByPreviouslyAffiliatedPartiesAndUnaffiliatedThirdPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_PropertyContributionsByUnaffiliatedThirdPartiesMember" abstract="true" name="PropertyContributionsByUnaffiliatedThirdPartiesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_GriffinCapitalEssentialAssetOperatingPartnershipL.P.Member" abstract="true" name="GriffinCapitalEssentialAssetOperatingPartnershipL.P.Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_GriffinCapitalLLCMember" abstract="true" name="GriffinCapitalLLCMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_PercentageOfNoncontrollingInterestsBasedOnWeightedAverageShares" abstract="false" name="PercentageOfNoncontrollingInterestsBasedOnWeightedAverageShares" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pkst_LimitedPartnersCapitalAccountUnitsReceivedShares" abstract="false" name="LimitedPartnersCapitalAccountUnitsReceivedShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pkst_LimitedPartnersCapitalAccountUnitsReceivedPercentage" abstract="false" name="LimitedPartnersCapitalAccountUnitsReceivedPercentage" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="pkst_LimitedPartnersCapitalAccountNumberOfAnnualInstallmentsForAwardsSettlement" abstract="false" name="LimitedPartnersCapitalAccountNumberOfAnnualInstallmentsForAwardsSettlement" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pkst_LimitedPartnersCapitalAccountUnitsRedeemed" abstract="false" name="LimitedPartnersCapitalAccountUnitsRedeemed" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="pkst_NoncontrollingInterestExchangeOfNoncontrollingInterestsValue" abstract="false" name="NoncontrollingInterestExchangeOfNoncontrollingInterestsValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_OfficeRentAndRelatedExpensesMember" abstract="true" name="OfficeRentAndRelatedExpensesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_DistributionsMember" abstract="true" name="DistributionsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_CommonSharesOwnedMember" abstract="true" name="CommonSharesOwnedMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_BuildingCorporateHeadquartersMember" abstract="true" name="BuildingCorporateHeadquartersMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_LesseeOperatingLeaseNumberOfLeases" abstract="false" name="LesseeOperatingLeaseNumberOfLeases" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pkst_LessorOperatingLeasePaymentToBeReceivedAfterYearFour" abstract="false" name="LessorOperatingLeasePaymentToBeReceivedAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" abstract="false" name="LesseeOperatingLeaseLiabilityToBePaidAfterYearFour" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="pkst_CapitalExpenditureProjectsLeasingAndTenantImprovementCommitmentsMember" abstract="true" name="CapitalExpenditureProjectsLeasingAndTenantImprovementCommitmentsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_RetentionAgreementMember" abstract="true" name="RetentionAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="pkst_NumberOfEmployeesEligibleForCashRetentionBonus" abstract="false" name="NumberOfEmployeesEligibleForCashRetentionBonus" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="pkst_NetOperatingIncome" abstract="false" name="NetOperatingIncome" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
