<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<!--
  This file is part of the Dutch Taxonomy (Nederlandse Taxonomie; NT)
  Intellectual Property of the State of the Netherlands
  Architecture: NT20
  Version: 20251210
  Release date: October 31, 2025
-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink">
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:label id="bzk-ww-i_DemolitionExpensesHousingAndNonHousingUnits_label_de" xlink:label="bzk-ww-i_DemolitionExpensesHousingAndNonHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Abrisskosten</link:label>
    <link:label id="bzk-ww-i_CashFlowStatementActivatedProductionOwnBusiness_label_de" xlink:label="bzk-ww-i_CashFlowStatementActivatedProductionOwnBusiness_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Aktivierte Produktion für den eigenen Betrieb (Verkauf, Abriss, Neubau, Kauf und Wohnungsmodernisierung)</link:label>
    <link:label id="bzk-ww-i_PurchaseHousingUnitsVOVForResale_label_de" xlink:label="bzk-ww-i_PurchaseHousingUnitsVOVForResale_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ankauf Wohneinheiten (VOV) für den Weiterverkauf</link:label>
    <link:label id="bzk-ww-i_PurchaseLand_label_de" xlink:label="bzk-ww-i_PurchaseLand_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ankauf von Boden</link:label>
    <link:label id="bzk-ww-i_PurchaseHousingAndNonHousingUnits_label_de" xlink:label="bzk-ww-i_PurchaseHousingAndNonHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ankauf</link:label>
    <link:label id="bzk-ww-i_CashAndCashEquivalentsNumberToSpecify_label_de" xlink:label="bzk-ww-i_CashAndCashEquivalentsNumberToSpecify_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Anzahl der Zahlungsmittel und Zahlungsmitteläquivalente, die angegeben werden müssen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleUnderConstructionNewBuildings_label_de" xlink:label="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleUnderConstructionNewBuildings_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Anzahl der noch zu verkaufenden, im Ausbau befindlichen, Neubauten von Eigentumswohnungen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleDeliveredNewBuildings_label_de" xlink:label="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleDeliveredNewBuildings_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Anzahl der noch zu verkaufenden, inzwischen aber abgeschlossenen, Neubauten von Eigentumswohnungen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleExistingBuildings_label_de" xlink:label="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleExistingBuildings_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Anzahl der noch zu verkaufenden, vorhandenen Eigentumswohnungen (VOV), die für den Wiederverkauf erworben wurden, jedoch noch nicht verkauft sind</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoans_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoans_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Anzahl von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NumberOfInvestments_label_de" xlink:label="bzk-ww-i_NumberOfInvestments_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Anzahl zu spezifizierende Kapitalanlagen</link:label>
    <link:label id="bzk-ww-i_ServiceContractsExpenses_label_de" xlink:label="bzk-ww-i_ServiceContractsExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Aufwendungen Wartungsverträge</link:label>
    <link:label id="bzk-ww-i_PaymentsSoldRealEstateInDevelopment_label_de" xlink:label="bzk-ww-i_PaymentsSoldRealEstateInDevelopment_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ausgaben verkauft(e) Immobilie(n) in Entwicklung</link:label>
    <link:label id="bzk-ww-i_BalanceCashOutflows_label_de" xlink:label="bzk-ww-i_BalanceCashOutflows_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ausgehende Kapitalflüsse</link:label>
    <link:label id="bzk-ww-i_DividendsPaidClassifiedAsInvestingActivities_label_de" xlink:label="bzk-ww-i_DividendsPaidClassifiedAsInvestingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ausgezahlte Dividenden</link:label>
    <link:label id="bzk-ww-i_MaintenanceExpenses_label_de" xlink:label="bzk-ww-i_MaintenanceExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Belastung durch Wartungsarbeiten</link:label>
    <link:label id="bzk-ww-i_ProvideInternalLoanClassifiedAsInvestingActivities_label_de" xlink:label="bzk-ww-i_ProvideInternalLoanClassifiedAsInvestingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Bereitstellung eines internen Darlehens</link:label>
    <link:label id="bzk-ww-i_RealEstateInExploitationValueInUseAssumptionsDescription_label_de" xlink:label="bzk-ww-i_RealEstateInExploitationValueInUseAssumptionsDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der Annahmen zur Bestimmung des Unternehmenswerts</link:label>
    <link:label id="bzk-ww-i_ValuationComplexDescription_label_de" xlink:label="bzk-ww-i_ValuationComplexDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der Art und Weise, in der der Bewertungskomplex bestimmt wird</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditionsDescription_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditionsDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der Bedingungen, unter denen die Transaktionen stattgefunden haben</link:label>
    <link:label id="bzk-ww-i_ValuationOfImmovableInfrastructuralAppurtenancesDescription_label_de" xlink:label="bzk-ww-i_ValuationOfImmovableInfrastructuralAppurtenancesDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der Bewertung von unbeweglichen und infrastrukturellen Einrichtungen</link:label>
    <link:label id="bzk-ww-i_AdditionalRelevantPositionsMembersManagementDescription_label_de" xlink:label="bzk-ww-i_AdditionalRelevantPositionsMembersManagementDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der relevanten Nebentätigkeiten von Mitgliedern des Vorstandes</link:label>
    <link:label id="bzk-ww-i_AdditionalRelevantPositionsMembersSupervisoryBodyDescription_label_de" xlink:label="bzk-ww-i_AdditionalRelevantPositionsMembersSupervisoryBodyDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der relevanten Nebentätigkeiten von Mitgliedern des aufsichtsführenden Organs</link:label>
    <link:label id="bzk-ww-i_RelevantApprovedInstitutionAssociatedCompaniesDescription_label_de" xlink:label="bzk-ww-i_RelevantApprovedInstitutionAssociatedCompaniesDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der relevanten zugelassenen Institute assoziierter Unternehmen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditionsOtherMovementsDescription_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditionsOtherMovementsDescription_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Beschreibung der sonstige mutations verkaufte Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_DeferredTaxAssetsDifferenceCommercialAndFiscal_label_de" xlink:label="bzk-ww-i_DeferredTaxAssetsDifferenceCommercialAndFiscal_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Betrag der latenten Steuerforderungen mit Bezug auf Unterschiede zwischen der handelsrechtlichen und steuerlichen Bewertung des Anlagevermögens</link:label>
    <link:label id="bzk-ww-i_RealEstateAndMovablePropertyUsedForExploitation_label_de" xlink:label="bzk-ww-i_RealEstateAndMovablePropertyUsedForExploitation_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Bewegliche und unbewegliche Sachen im Dienst der Verwertung</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleUnderConstructionNewBuildingsValue_label_de" xlink:label="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleUnderConstructionNewBuildingsValue_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Bilanzwert der zu verkaufenden, im Ausbau befindlichen Neubauten von Eigentumswohnungen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleDeliveredNewBuildingsValue_label_de" xlink:label="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleDeliveredNewBuildingsValue_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Bilanzwert der zu verkaufenden, inzwischen aber abgeschlossenen, Neubauten von Eigentumswohnungen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleExistingBuildingsValue_label_de" xlink:label="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleExistingBuildingsValue_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Bilanzwert der zu verkaufenden, vorhandenen Eigentumswohnungen (VOV), die für den Wiederverkauf erworben wurden, jedoch noch nicht verkauft sind</link:label>
    <link:label id="bzk-ww-i_SectorSpecificLevyIndependentOfResult_label_de" xlink:label="bzk-ww-i_SectorSpecificLevyIndependentOfResult_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Branchenspezifische Steuer, unabhängig vom Ergebnis</link:label>
    <link:label id="bzk-ww-i_BookValueRealEstatePortfolioSold_label_de" xlink:label="bzk-ww-i_BookValueRealEstatePortfolioSold_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Buchwert verkauft(es) Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_SocialRealEstateInExploitation_label_de" xlink:label="bzk-ww-i_SocialRealEstateInExploitation_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">DAWI-Immobilien in Verwertung</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanLoanOrCreditFacility_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanLoanOrCreditFacility_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Darlehen oder Krediteinridchtung von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_LoansGranted_label_de" xlink:label="bzk-ww-i_LoansGranted_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Darlehen u/g</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanBorrower_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanBorrower_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Darlehensnehmer von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanContractEndDate_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanContractEndDate_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Datum des Vertragsendes von Darlehen ohne BSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_DivestmentInvestmentProceedsOther_label_de" xlink:label="bzk-ww-i_DivestmentInvestmentProceedsOther_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Devestitions- und Investitionseinkünfte, sonstige</link:label>
    <link:label id="bzk-ww-i_DividendsReceivedFromNonDaebClassifiedAsInvestingActivities_label_de" xlink:label="bzk-ww-i_DividendsReceivedFromNonDaebClassifiedAsInvestingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Dividende von Nicht-DAWI</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanGuaranteedBy_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanGuaranteedBy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Durch WSW unbesicherte Darlehen garantiert durch</link:label>
    <link:label id="bzk-ww-i_EquityWithPublicHousingPurpose_label_de" xlink:label="bzk-ww-i_EquityWithPublicHousingPurpose_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Eigenkapital mit dem Zweck des öffentlichen Wohnungsbaus</link:label>
    <link:label id="bzk-ww-i_EquityWithoutPublicHousingDesignation_label_de" xlink:label="bzk-ww-i_EquityWithoutPublicHousingDesignation_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Eigenkapital ohne den Zweck des öffentlichen Wohnungsbaus</link:label>
    <link:label id="bzk-ww-i_CashFlowPPEActivities_label_de" xlink:label="bzk-ww-i_CashFlowPPEActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ein- und ausgehender Cashflow (des) Sachanlagevermögens</link:label>
    <link:label id="bzk-ww-i_BalanceCashInflows_label_de" xlink:label="bzk-ww-i_BalanceCashInflows_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Eingehende Kapitalflüsse</link:label>
    <link:label id="bzk-ww-i_IncomeOtherActivities_label_de" xlink:label="bzk-ww-i_IncomeOtherActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Einkünfte aus sonstigen Aktivitäten</link:label>
    <link:label id="bzk-ww-i_IncomeCompounds_label_de" xlink:label="bzk-ww-i_IncomeCompounds_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Einnahmen Verbindungen</link:label>
    <link:label id="bzk-ww-i_IncomeIndependentRentalProperties_label_de" xlink:label="bzk-ww-i_IncomeIndependentRentalProperties_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Einnahmen aus eigenständigen Mietwohnungen</link:label>
    <link:label id="bzk-ww-i_ReceiptsGovernment_label_de" xlink:label="bzk-ww-i_ReceiptsGovernment_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Einnahmen der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_IncomeOtherClassifiedAsInvestingProperties_label_de" xlink:label="bzk-ww-i_IncomeOtherClassifiedAsInvestingProperties_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Einnahmen, sonstige</link:label>
    <link:label id="bzk-ww-i_GroundLeaseExpensesClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_GroundLeaseExpensesClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erbpacht (aus operativen Tätigkeiten)</link:label>
    <link:label id="bzk-ww-i_ResultNonDaebBranch_label_de" xlink:label="bzk-ww-i_ResultNonDaebBranch_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Ergebnis Nicht-DAWI-Zweig</link:label>
    <link:label id="bzk-ww-i_InterestReceivedExcludingInternalLoansClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_InterestReceivedExcludingInternalLoansClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erhaltener Zins (exklusiv internes Darlehen)</link:label>
    <link:label id="bzk-ww-i_InterestReceivedInternalLoansClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_InterestReceivedInternalLoansClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erhaltener Zins internes Darlehen</link:label>
    <link:label id="bzk-ww-i_InternalLoansReceivedClassifiedAsFinancingActivities_label_de" xlink:label="bzk-ww-i_InternalLoansReceivedClassifiedAsFinancingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erhaltener internes Darlehen</link:label>
    <link:label id="bzk-ww-i_RepaymentsInternalLoansReceivedClassifiedAsInvestingActivities_label_de" xlink:label="bzk-ww-i_RepaymentsInternalLoansReceivedClassifiedAsInvestingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erhaltener tilgung von internes Darlehen</link:label>
    <link:label id="bzk-ww-i_CashAndCashEquivalentsNotesToTheBalanceSheetItem_label_de" xlink:label="bzk-ww-i_CashAndCashEquivalentsNotesToTheBalanceSheetItem_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erläuterungen zum Bilanzposten Zahlungsmittel und Zahlungsmitteläquivalente</link:label>
    <link:label id="bzk-ww-i_IncomeServiceContracts_label_de" xlink:label="bzk-ww-i_IncomeServiceContracts_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erträge aus Wartungsverträgen</link:label>
    <link:label id="bzk-ww-i_IncomeDependentHousingUnits_label_de" xlink:label="bzk-ww-i_IncomeDependentHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Erträge aus nicht-eigenständigen Mietwohnungen</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanEurInterestPeriod_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanEurInterestPeriod_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Eur' Zinsperiode (NL: "Eur renteperiode) von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanEuriborPremiumPercentage_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanEuriborPremiumPercentage_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Euribor-Aufschlag von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_ExternalCostAtSale_label_de" xlink:label="bzk-ww-i_ExternalCostAtSale_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Externe Kosten bei Verkauf</link:label>
    <link:label id="bzk-ww-i_TaxesSocialSecurityContributionsReceivables_label_de" xlink:label="bzk-ww-i_TaxesSocialSecurityContributionsReceivables_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Forderungen aus Steuern und Sozialversicherungsprämien</link:label>
    <link:label id="bzk-ww-i_ReceivablesFromDaebBranch_label_de" xlink:label="bzk-ww-i_ReceivablesFromDaebBranch_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Forderungen gegenüber der DAWI</link:label>
    <link:label id="bzk-ww-i_GovernmentReceivables_label_de" xlink:label="bzk-ww-i_GovernmentReceivables_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Forderungen gegenüber der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_LandPositionsAreaChangeConstruction_label_de" xlink:label="bzk-ww-i_LandPositionsAreaChangeConstruction_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundbesitz Oberfläche Änderungen des Bebauungszweckes</link:label>
    <link:label id="bzk-ww-i_LandPositionsBalanceSheetMovements_label_de" xlink:label="bzk-ww-i_LandPositionsBalanceSheetMovements_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundbesitzposten Bilanzwert Mutationen</link:label>
    <link:label id="bzk-ww-i_LandPositionsBalanceSheetInventoryMovements_label_de" xlink:label="bzk-ww-i_LandPositionsBalanceSheetInventoryMovements_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundbesitzposten Bilanzwert Vorratsmutationen</link:label>
    <link:label id="bzk-ww-i_LandPositionsBalanceSheet_label_de" xlink:label="bzk-ww-i_LandPositionsBalanceSheet_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundbesitzposten Bilanzwert</link:label>
    <link:label id="bzk-ww-i_LandPositionsAreaInventoryMovements_label_de" xlink:label="bzk-ww-i_LandPositionsAreaInventoryMovements_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundbesitzposten Oberfläche Vorratsmutationen</link:label>
    <link:label id="bzk-ww-i_LandPositionsArea_label_de" xlink:label="bzk-ww-i_LandPositionsArea_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundbesitzposten Oberfläche</link:label>
    <link:label id="bzk-ww-i_SalesIncomeRealEstatePortfolioPolicy_label_de" xlink:label="bzk-ww-i_SalesIncomeRealEstatePortfolioPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage Verkaufserlös Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_IncomeOtherActivitiesPolicy_label_de" xlink:label="bzk-ww-i_IncomeOtherActivitiesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage der Einkünfte aus sonstigen Aktivitäten</link:label>
    <link:label id="bzk-ww-i_AttributableFinancingCostsPolicy_label_de" xlink:label="bzk-ww-i_AttributableFinancingCostsPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage der kalkulatorischen Finanzierungskosten</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioPolicy_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage der nicht-realisierten Wertänderungen Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_BookValueRealEstatePortfolioSoldPolicy_label_de" xlink:label="bzk-ww-i_BookValueRealEstatePortfolioSoldPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage des Buchwertes verkauft(es) Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_NetResultExploitationOfRealEstatePortfolioPolicy_label_de" xlink:label="bzk-ww-i_NetResultExploitationOfRealEstatePortfolioPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage des Nettoergebnisses Verwertung des Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_NetResultOtherActivitiesPolicy_label_de" xlink:label="bzk-ww-i_NetResultOtherActivitiesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage des Nettoergebnisses sonstige Aktivitäten</link:label>
    <link:label id="bzk-ww-i_NetResultSoldRealEstateInDevelopmentPolicy_label_de" xlink:label="bzk-ww-i_NetResultSoldRealEstateInDevelopmentPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage des Nettoergebnisses verkauft(e) Immobilie(n) in Entwicklung</link:label>
    <link:label id="bzk-ww-i_RevenueSoldRealEstateInDevelopmentPolicy_label_de" xlink:label="bzk-ww-i_RevenueSoldRealEstateInDevelopmentPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage des Umsatzes durch verkaufte Immobilien in Entwicklung</link:label>
    <link:label id="bzk-ww-i_NetRealisedResultSalesRealEstatePortfolioPolicy_label_de" xlink:label="bzk-ww-i_NetRealisedResultSalesRealEstatePortfolioPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage des realisierten Nettogewinns aus dem Verkauf (des) Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_ServiceContractsExpensesPolicy_label_de" xlink:label="bzk-ww-i_ServiceContractsExpensesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Aufwendungen Wartungsverträge</link:label>
    <link:label id="bzk-ww-i_MaintenanceExpensesPolicy_label_de" xlink:label="bzk-ww-i_MaintenanceExpensesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Belastung durch Wartungsarbeiten</link:label>
    <link:label id="bzk-ww-i_SocialRealEstateInExploitationPolicy_label_de" xlink:label="bzk-ww-i_SocialRealEstateInExploitationPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von DAWI-Immobilien in Verwertung</link:label>
    <link:label id="bzk-ww-i_IncomeServiceContractsPolicy_label_de" xlink:label="bzk-ww-i_IncomeServiceContractsPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Erträgen aus Wartungsverträgen</link:label>
    <link:label id="bzk-ww-i_GovernmentReceivablesPolicy_label_de" xlink:label="bzk-ww-i_GovernmentReceivablesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Forderungen gegenüber der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_RealEstateInDevelopmentForOwnExploitationPolicy_label_de" xlink:label="bzk-ww-i_RealEstateInDevelopmentForOwnExploitationPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Immobilie(n) in Entwicklung, vorgesehen zur eigenen Verwertung</link:label>
    <link:label id="bzk-ww-i_RealEstateInDevelopmentForSalePolicy_label_de" xlink:label="bzk-ww-i_RealEstateInDevelopmentForSalePolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Immobilien in Entwicklung für den Verkauf</link:label>
    <link:label id="bzk-ww-i_LiveabilityExpensesPolicy_label_de" xlink:label="bzk-ww-i_LiveabilityExpensesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Kosten bezüglich Lebensqualität</link:label>
    <link:label id="bzk-ww-i_CostsOtherActivitiesPolicy_label_de" xlink:label="bzk-ww-i_CostsOtherActivitiesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Kosten von sonstigen Aktivitäten</link:label>
    <link:label id="bzk-ww-i_RentalReceivablesPolicy_label_de" xlink:label="bzk-ww-i_RentalReceivablesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Mietschuldnern</link:label>
    <link:label id="bzk-ww-i_CommercialRealEstateInExploitationPolicy_label_de" xlink:label="bzk-ww-i_CommercialRealEstateInExploitationPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Nicht-DAWI-Immobilien in Verwertung</link:label>
    <link:label id="bzk-ww-i_ProvisionUnprofitableInvestmentsAndRestructuringPolicy_label_de" xlink:label="bzk-ww-i_ProvisionUnprofitableInvestmentsAndRestructuringPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Rückstellung(en) für unrentable Investitionen und Restrukturierungen</link:label>
    <link:label id="bzk-ww-i_PayablesGovernmentPolicy_label_de" xlink:label="bzk-ww-i_PayablesGovernmentPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Schulden bei der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_RentalAndManagementActivitiesExpensesPolicy_label_de" xlink:label="bzk-ww-i_RentalAndManagementActivitiesExpensesPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Steuern Vermietungs- und Verwaltungsaktivitäten</link:label>
    <link:label id="bzk-ww-i_ChangesValueRealEstatePortfolioPolicy_label_de" xlink:label="bzk-ww-i_ChangesValueRealEstatePortfolioPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von Wertänderungen Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_ChangesValueOtherRealEstatePortfolioPolicy_label_de" xlink:label="bzk-ww-i_ChangesValueOtherRealEstatePortfolioPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von anderen Wertänderungen (des) Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_RealEstateAndMovablePropertyUsedForExploitationPolicy_label_de" xlink:label="bzk-ww-i_RealEstateAndMovablePropertyUsedForExploitationPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von beweglichen und unbeweglichen Sachen im Dienst der Verwertung</link:label>
    <link:label id="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSalesRealEstatePortfolioPolicy_label_de" xlink:label="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSalesRealEstatePortfolioPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von kalkulatorischen Organisationskosten, qualifiziert als Verkauf Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSoldRealEstateInDevelopmentPolicy_label_de" xlink:label="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSoldRealEstateInDevelopmentPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von kalkulatorischen Organisationskosten, qualifiziert als verkauft(e) Immobilie in Entwicklung</link:label>
    <link:label id="bzk-ww-i_PayablesGovernmentCurrentPolicy_label_de" xlink:label="bzk-ww-i_PayablesGovernmentCurrentPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von kurzfristige Schulden bei der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_PayablesGovernmentNoncurrentPolicy_label_de" xlink:label="bzk-ww-i_PayablesGovernmentNoncurrentPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von langfristige Schulden bei der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_PayablesGovernmentNoncurrent_label_de" xlink:label="bzk-ww-i_PayablesGovernmentNoncurrent_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von langfristige Schulden bei der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_LoansGrantedPolicy_label_de" xlink:label="bzk-ww-i_LoansGrantedPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von langfristige gewährten Darlehen u/g</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioSoldUnderConditionsPolicy_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioSoldUnderConditionsPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von nicht-realisierte Wertänderungen Immobilienportfolio, verkauft unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioForSalePolicy_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioForSalePolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von nicht-realisierten Wertänderungen Immobilienportfolio, vorgesehen für den Verkauf</link:label>
    <link:label id="bzk-ww-i_RealEstateOtherInExploitationPolicy_label_de" xlink:label="bzk-ww-i_RealEstateOtherInExploitationPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von sonstigen Immobilien in Verwertung</link:label>
    <link:label id="bzk-ww-i_OrganisationCostsOtherPolicy_label_de" xlink:label="bzk-ww-i_OrganisationCostsOtherPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von sonstigen Organisationskosten</link:label>
    <link:label id="bzk-ww-i_InventoriesOtherPolicy_label_de" xlink:label="bzk-ww-i_InventoriesOtherPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von sonstigen Vorräten</link:label>
    <link:label id="bzk-ww-i_DirectOperationalExpensesOtherExploitationPossessionPolicy_label_de" xlink:label="bzk-ww-i_DirectOperationalExpensesOtherExploitationPossessionPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von sonstigen direkten, operativen Abgaben, Verwertung Besitz</link:label>
    <link:label id="bzk-ww-i_GovernmentContributionsPolicy_label_de" xlink:label="bzk-ww-i_GovernmentContributionsPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von staatlichen Zuschüssen</link:label>
    <link:label id="bzk-ww-i_RealEstateForSalePolicy_label_de" xlink:label="bzk-ww-i_RealEstateForSalePolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlage von zum Verkauf vorgesehenen Immobilien</link:label>
    <link:label id="bzk-ww-i_PaymentsSoldRealEstateInDevelopmentPolicy_label_de" xlink:label="bzk-ww-i_PaymentsSoldRealEstateInDevelopmentPolicy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Grundlagen von Ausgaben verkauft(e) Immobilie(n) in Entwicklung</link:label>
    <link:label id="bzk-ww-i_RealEstateInDevelopmentForSale_label_de" xlink:label="bzk-ww-i_RealEstateInDevelopmentForSale_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Immobilie(n) in Entwicklung für den Verkauf</link:label>
    <link:label id="bzk-ww-i_RealEstateInDevelopmentForOwnExploitation_label_de" xlink:label="bzk-ww-i_RealEstateInDevelopmentForOwnExploitation_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Immobilie(n) in Entwicklung, vorgesehen zur eigenen Verwertung</link:label>
    <link:label id="bzk-ww-i_RentalReceivablesDisclosure_label_de" xlink:label="bzk-ww-i_RentalReceivablesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Informationen über Mietschuldner (NL: "huurdebiteuren")</link:label>
    <link:label id="bzk-ww-i_InternalLoanAsset_label_de" xlink:label="bzk-ww-i_InternalLoanAsset_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Internes Darlehen (Aktiva)</link:label>
    <link:label id="bzk-ww-i_InternalLoanLiability_label_de" xlink:label="bzk-ww-i_InternalLoanLiability_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Internes Darlehen (Haftung)</link:label>
    <link:label id="bzk-ww-i_AttributableFinancingCosts_label_de" xlink:label="bzk-ww-i_AttributableFinancingCosts_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kalkulatorische Finanzierungkosten</link:label>
    <link:label id="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSalesRealEstatePortfolio_label_de" xlink:label="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSalesRealEstatePortfolio_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kalkulatorische Organisationskosten, qualifiziert als Verkauf Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSoldRealEstateInDevelopment_label_de" xlink:label="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSoldRealEstateInDevelopment_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kalkulatorische Organisationskosten, qualifiziert als verkauft(e) Immobilie in Entwicklung</link:label>
    <link:label id="bzk-ww-i_CashFlowStatementCorporationInvestmentsInterestExpenditure_label_de" xlink:label="bzk-ww-i_CashFlowStatementCorporationInvestmentsInterestExpenditure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kalkulatorische Zinsaufwendungen für Investitionen durch die Gesellschaft</link:label>
    <link:label id="bzk-ww-i_IncomeCommercialRealEstate_label_de" xlink:label="bzk-ww-i_IncomeCommercialRealEstate_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kommerzielle Immobilie</link:label>
    <link:label id="bzk-ww-i_LiveabilityExpenses_label_de" xlink:label="bzk-ww-i_LiveabilityExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kosten bezüglich Lebensqualität</link:label>
    <link:label id="bzk-ww-i_CostsOtherActivities_label_de" xlink:label="bzk-ww-i_CostsOtherActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kosten von sonstigen Aktivitäten</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanCouponDate1_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanCouponDate1_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kupondatum 1 (NL: "coupondatum") von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanCouponDate2_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanCouponDate2_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kupondatum 2 (NL: "coupondatum") von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanCouponFrequency_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanCouponFrequency_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kuponfrequenz von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_PayablesGovernmentCurrent_label_de" xlink:label="bzk-ww-i_PayablesGovernmentCurrent_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Kurzfristige schulden bei der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_CorporateTaxClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_CorporateTaxClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Körperschaftssteuer</link:label>
    <link:label id="bzk-ww-i_LiveabilityExpensesExternalExpensesNoninvestmentRelated_label_de" xlink:label="bzk-ww-i_LiveabilityExpensesExternalExpensesNoninvestmentRelated_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Lebensqualität externe Ausgaben nicht investitionsgebunden</link:label>
    <link:label id="bzk-ww-i_LiveabilityExternalExpensesProjectRelated_label_de" xlink:label="bzk-ww-i_LiveabilityExternalExpensesProjectRelated_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Lebensqualität externe Ausgaben projektgebunden</link:label>
    <link:label id="bzk-ww-i_RentalIncomeClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_RentalIncomeClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Mietquittungen (aus operativen Tätigkeiten)</link:label>
    <link:label id="bzk-ww-i_RentalReceivables_label_de" xlink:label="bzk-ww-i_RentalReceivables_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Mietschuldner (NL: "huurdebiteuren")</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditionsMovement_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditionsMovement_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Mutations verkaufte Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanNameFinancier_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanNameFinancier_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Name Finanzier Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanNameParticipant_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanNameParticipant_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Name Teilnehmers Darlehen ohnen WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NetResultExploitationOfRealEstatePortfolio_label_de" xlink:label="bzk-ww-i_NetResultExploitationOfRealEstatePortfolio_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nettoergebnis aus Verwertung des Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_NetResultOtherActivities_label_de" xlink:label="bzk-ww-i_NetResultOtherActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nettoergebnis sonstige Aktivitäten</link:label>
    <link:label id="bzk-ww-i_NetResultSoldRealEstateInDevelopment_label_de" xlink:label="bzk-ww-i_NetResultSoldRealEstateInDevelopment_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nettoergebnis verkauft(e) Immobilie(n) in Entwicklung</link:label>
    <link:label id="bzk-ww-i_NetAssetValueNonDAEBCompound_label_de" xlink:label="bzk-ww-i_NetAssetValueNonDAEBCompound_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nettovermögenswert nicht-DAWI (in Verbindungen)</link:label>
    <link:label id="bzk-ww-i_NetAssetValueNonDaeb_label_de" xlink:label="bzk-ww-i_NetAssetValueNonDaeb_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nettovermögenswert nicht-DAWI</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldNewUnderConditions_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldNewUnderConditions_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Neu verkaufte Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_PaymentsNewBuildingsRentHousingAndNonHousingUnits_label_de" xlink:label="bzk-ww-i_PaymentsNewBuildingsRentHousingAndNonHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Neubau Miete</link:label>
    <link:label id="bzk-ww-i_NewBuildingsSaleHousingAndNonHousingUnits_label_de" xlink:label="bzk-ww-i_NewBuildingsSaleHousingAndNonHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Neubau Verkäufe</link:label>
    <link:label id="bzk-ww-i_NewDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:label="bzk-ww-i_NewDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Neue Darlehen DAWI-Investitionen ohne Bürgschaft durch WSW</link:label>
    <link:label id="bzk-ww-i_NewNonDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:label="bzk-ww-i_NewNonDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Neue Darlehen Nicht-DAWI-Investitionen ohne Bürgschaft durch WSW</link:label>
    <link:label id="bzk-ww-i_NewLoansToBeSecured_label_de" xlink:label="bzk-ww-i_NewLoansToBeSecured_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Neue Kredite werden gesichert</link:label>
    <link:label id="bzk-ww-i_CommercialRealEstateInExploitation_label_de" xlink:label="bzk-ww-i_CommercialRealEstateInExploitation_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nicht-DAWI-Immobilien in Verwertung</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioSoldUnderConditions_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioSoldUnderConditions_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nicht-realisierte Wertänderungen Immobilienportfolio, verkauft unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioForSale_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioForSale_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nicht-realisierte Wertänderungen Immobilienportfolio, vorgesehen für den Verkauf</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolio_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolio_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nicht-realisierte Wertänderungen Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanRemainingLiability_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanRemainingLiability_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Nominaler Schuldenrestbestand von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationDiscountRateDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationDiscountRateDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Diskontierungszinsfuß als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationGroundLeaseExpensesDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationGroundLeaseExpensesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Erbpacht als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationExityieldDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationExityieldDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Kapitalisierungszins als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationVacantValueDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationVacantValueDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Leerwert als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationIncreaseVacantValueDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationIncreaseVacantValueDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Leerwertsteigerung als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationIncreaseMarketRentFreedomDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationIncreaseMarketRentFreedomDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Marktmietanstieg (NL: "markthuurstijging") als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationMarketRentDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationMarketRentDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Marktmiete als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationChangeSalesOpportunityDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationChangeSalesOpportunityDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Mutationen Verkaufsgelegenheit als vorgeschrieber Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationMaintenanceDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationMaintenanceDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert Wartung als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationParticularPrinciplesDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationParticularPrinciplesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert besondere Ausgangspunkte als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationSpecialCircumstancesDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationSpecialCircumstancesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert besondere Umstände als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationManualParameterDeviationTechnicalSeparationCostsDisclosure_label_de" xlink:label="bzk-ww-i_ValuationManualParameterDeviationTechnicalSeparationCostsDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Abweichung vom Marktwert technische Teilungskosten als vorgeschriebener Parameter in dem Handbuch</link:label>
    <link:label id="bzk-ww-i_ValuationBasisFullDisclosure_label_de" xlink:label="bzk-ww-i_ValuationBasisFullDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der Version (Basis oder Voll), die gemäß dem Handbuch verwendet wird</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleDisclosure_label_de" xlink:label="bzk-ww-i_HousingFacilitiesOwnerOccupiedForSaleDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der abgeschlossenen oder noch in Ausbau befindlichen, aber noch nicht verkauften (neu gebauten) Eigentumswohnungen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditionsDisclosure_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditionsDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung der verkauften Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_BookValueRealEstatePortfolioSoldDisclosure_label_de" xlink:label="bzk-ww-i_BookValueRealEstatePortfolioSoldDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung des Buchwerts verkauft(es) Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_NetResultOtherActivitiesDisclosure_label_de" xlink:label="bzk-ww-i_NetResultOtherActivitiesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung des Nettoergebnis sonstige Aktivitäten</link:label>
    <link:label id="bzk-ww-i_NetResultExploitationOfRealEstatePortfolioDisclosure_label_de" xlink:label="bzk-ww-i_NetResultExploitationOfRealEstatePortfolioDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung des Nettoergebnisses Verwertung des Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_NetResultSoldRealEstateInDevelopmentDisclosure_label_de" xlink:label="bzk-ww-i_NetResultSoldRealEstateInDevelopmentDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung des Nettoergebnisses verkauft(e) Immobilie(n) in Entwicklung</link:label>
    <link:label id="bzk-ww-i_RevenueSoldRealEstateInDevelopmentDisclosure_label_de" xlink:label="bzk-ww-i_RevenueSoldRealEstateInDevelopmentDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung des Umsatzes (durch) verkaufte Immobilien in Entwicklung</link:label>
    <link:label id="bzk-ww-i_SalesIncomeRealEstatePortfolioDisclosure_label_de" xlink:label="bzk-ww-i_SalesIncomeRealEstatePortfolioDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung des Verkäufserlöses Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_NetRealisedResultSalesRealEstatePortfolioDisclosure_label_de" xlink:label="bzk-ww-i_NetRealisedResultSalesRealEstatePortfolioDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung des realisierten Nettogewinns aus dem Verkauf (des) Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_ServiceContractsExpensesDisclosure_label_de" xlink:label="bzk-ww-i_ServiceContractsExpensesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Aufwendungen Wartungsverträge</link:label>
    <link:label id="bzk-ww-i_PaymentsSoldRealEstateInDevelopmentDisclosure_label_de" xlink:label="bzk-ww-i_PaymentsSoldRealEstateInDevelopmentDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Ausgaben verkauft(e) Immobilie(n) in Entwicklung</link:label>
    <link:label id="bzk-ww-i_MaintenanceExpensesDisclosure_label_de" xlink:label="bzk-ww-i_MaintenanceExpensesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Belastung durch Wartungsarbeiten</link:label>
    <link:label id="bzk-ww-i_SocialRealEstateInExploitationDisclosure_label_de" xlink:label="bzk-ww-i_SocialRealEstateInExploitationDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von DAWI-Immobilien in Verwertung</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanDisclosure_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_IncomeOtherActivitiesDisclosure_label_de" xlink:label="bzk-ww-i_IncomeOtherActivitiesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Einkünften aus sonstigen Aktivitäten</link:label>
    <link:label id="bzk-ww-i_IncomeServiceContractsDisclosure_label_de" xlink:label="bzk-ww-i_IncomeServiceContractsDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Erträgen aus Wartungsverträgen</link:label>
    <link:label id="bzk-ww-i_TaxesSocialSecurityContributionsReceivablesDisclosure_label_de" xlink:label="bzk-ww-i_TaxesSocialSecurityContributionsReceivablesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Forderungen aus Steuern und Sozialversicherungsprämien</link:label>
    <link:label id="bzk-ww-i_GovernmentReceivablesDisclosure_label_de" xlink:label="bzk-ww-i_GovernmentReceivablesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Forderungen gegenüber der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_LandPositionsDisclosure_label_de" xlink:label="bzk-ww-i_LandPositionsDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Grundbesitzposten</link:label>
    <link:label id="bzk-ww-i_RealEstateInDevelopmentForOwnExploitationDisclosure_label_de" xlink:label="bzk-ww-i_RealEstateInDevelopmentForOwnExploitationDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Immobilie(n) in Entwicklung, vorgesehen zur eigenen Verwertung</link:label>
    <link:label id="bzk-ww-i_LiveabilityExpensesDisclosure_label_de" xlink:label="bzk-ww-i_LiveabilityExpensesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Kosten bezüglich Lebensqualität</link:label>
    <link:label id="bzk-ww-i_CostsOtherActivitiesDisclosure_label_de" xlink:label="bzk-ww-i_CostsOtherActivitiesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Kosten von sonstigen Aktivitäten</link:label>
    <link:label id="bzk-ww-i_CommercialRealEstateInExploitationDisclosure_label_de" xlink:label="bzk-ww-i_CommercialRealEstateInExploitationDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Nicht-DAWI-Immobilien in Verwertung</link:label>
    <link:label id="bzk-ww-i_ProvisionUnprofitableInvestmentsAndRestructuringDisclosure_label_de" xlink:label="bzk-ww-i_ProvisionUnprofitableInvestmentsAndRestructuringDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Rückstellung(en) für unrentable Investitionen und Restrukturierungen</link:label>
    <link:label id="bzk-ww-i_RentalAndManagementActivitiesExpensesDisclosure_label_de" xlink:label="bzk-ww-i_RentalAndManagementActivitiesExpensesDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Steuern Vermietungs- und Verwaltungsaktivitäten</link:label>
    <link:label id="bzk-ww-i_ChangesValueRealEstatePortfolioDisclosure_label_de" xlink:label="bzk-ww-i_ChangesValueRealEstatePortfolioDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von Wertänderungen Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_RealEstateAndMovablePropertyUsedForExploitationDisclosure_label_de" xlink:label="bzk-ww-i_RealEstateAndMovablePropertyUsedForExploitationDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von beweglichen und unbeweglichen Sachen im Dienst der Verwertung</link:label>
    <link:label id="bzk-ww-i_AttributableFinancingCostsDisclosure_label_de" xlink:label="bzk-ww-i_AttributableFinancingCostsDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von kalkulatorischen Finanzierungskosten</link:label>
    <link:label id="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSalesRealEstatePortfolioDisclosure_label_de" xlink:label="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSalesRealEstatePortfolioDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von kalkulatorischen Organisationskosten, qualifiziert als Verkauf Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSoldRealEstateInDevelopmentDisclosure_label_de" xlink:label="bzk-ww-i_AttributableOrganisationCostsQualifiedAsSoldRealEstateInDevelopmentDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von kalkulatorischen Organisationskosten, qualifiziert als verkauft(e) Immobilie in Entwicklung</link:label>
    <link:label id="bzk-ww-i_PayablesGovernmentCurrentDisclosure_label_de" xlink:label="bzk-ww-i_PayablesGovernmentCurrentDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von kurzfristige Schulden bei der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_PayablesGovernmentNoncurrentDisclosure_label_de" xlink:label="bzk-ww-i_PayablesGovernmentNoncurrentDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von langfristige Schulden bei der öffentlichen Hand</link:label>
    <link:label id="bzk-ww-i_LoansGrantedDisclosure_label_de" xlink:label="bzk-ww-i_LoansGrantedDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von langfristige gewährten Darlehen u/g</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioSoldUnderConditionsDisclosure_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioSoldUnderConditionsDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von nicht-realisierte Wertänderungen Immobilienportfolio, verkauft unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioForSaleDisclosure_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioForSaleDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von nicht-realisierten Wertänderungen Immobilienportfolio, vorgesehen für den Verkauf</link:label>
    <link:label id="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioDisclosure_label_de" xlink:label="bzk-ww-i_ChangesValueNotRealisedRealEstatePortfolioDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von nicht-realisierten Wertänderungen Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_OrganisationCostsOtherDisclosure_label_de" xlink:label="bzk-ww-i_OrganisationCostsOtherDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von sonstigen Organisationskosten</link:label>
    <link:label id="bzk-ww-i_InventoriesOtherDisclosure_label_de" xlink:label="bzk-ww-i_InventoriesOtherDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von sonstigen Vorräten</link:label>
    <link:label id="bzk-ww-i_ChangesValueOtherRealEstatePortfolioDisclosure_label_de" xlink:label="bzk-ww-i_ChangesValueOtherRealEstatePortfolioDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von sonstigen Wertänderungen (des) Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_DirectOperationalExpensesOtherExploitationPossessionDisclosure_label_de" xlink:label="bzk-ww-i_DirectOperationalExpensesOtherExploitationPossessionDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von sonstigen direkten, operativen Abgaben, Verwertung Besitz</link:label>
    <link:label id="bzk-ww-i_GovernmentContributionsDisclosure_label_de" xlink:label="bzk-ww-i_GovernmentContributionsDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von staatlichen Zuschüssen</link:label>
    <link:label id="bzk-ww-i_RealEstateForSaleDisclosure_label_de" xlink:label="bzk-ww-i_RealEstateForSaleDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von zum Verkauf vorgesehene Immobilien</link:label>
    <link:label id="bzk-ww-i_RealEstateInDevelopmentForSaleDisclosure_label_de" xlink:label="bzk-ww-i_RealEstateInDevelopmentForSaleDisclosure_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Offenlegung von zum Verkauf vorgesehene Immobilien</link:label>
    <link:label id="bzk-ww-i_IncomeParkingFacilities_label_de" xlink:label="bzk-ww-i_IncomeParkingFacilities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Parkraumbewirtschaftung</link:label>
    <link:label id="bzk-ww-i_CashFlowStatementMaintenanceEmployeeBenefitsExpenses_label_de" xlink:label="bzk-ww-i_CashFlowStatementMaintenanceEmployeeBenefitsExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Personalausgabenteil mit Bezug auf Instandhaltung</link:label>
    <link:label id="bzk-ww-i_CashFlowStatementLiveabilityEmployeeBenefitsExpenses_label_de" xlink:label="bzk-ww-i_CashFlowStatementLiveabilityEmployeeBenefitsExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Personalausgabenteil, der die Lebensqualität betrifft</link:label>
    <link:label id="bzk-ww-i_StaffingFormationPostsIncludingCompounds_label_de" xlink:label="bzk-ww-i_StaffingFormationPostsIncludingCompounds_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Planstellen Personalbesetzung inklusive Verbindungen</link:label>
    <link:label id="bzk-ww-i_StaffingFormationPosts_label_de" xlink:label="bzk-ww-i_StaffingFormationPosts_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Planstellen Personalbesetzung</link:label>
    <link:label id="bzk-ww-i_NetRealisedResultSalesRealEstatePortfolio_label_de" xlink:label="bzk-ww-i_NetRealisedResultSalesRealEstatePortfolio_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Realisierter Nettogewinn aus dem Verkauf (des) Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_LandPositionsRisks_label_de" xlink:label="bzk-ww-i_LandPositionsRisks_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Risiken erwartet als Folge der Grundbesitzposten</link:label>
    <link:label id="bzk-ww-i_ProvisionUnprofitableInvestmentsAndRestructuring_label_de" xlink:label="bzk-ww-i_ProvisionUnprofitableInvestmentsAndRestructuring_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Rückstellung für unrentable Investitionen und Restrukturierungen</link:label>
    <link:label id="bzk-ww-i_RepaymentsExistingLoansFromTIClassifiedAsFinancingActivities_label_de" xlink:label="bzk-ww-i_RepaymentsExistingLoansFromTIClassifiedAsFinancingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Rückzahlung vorhandener Darlehen von einer berechtigten Institution</link:label>
    <link:label id="bzk-ww-i_BalanceFinancialFixedAssets_label_de" xlink:label="bzk-ww-i_BalanceFinancialFixedAssets_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Saldo des ein- und ausgehenden Cashflows (des) Finanzanlagevermögens</link:label>
    <link:label id="bzk-ww-i_OperatingExpensesOtherClassifiedAsOperatingExpenses_label_de" xlink:label="bzk-ww-i_OperatingExpensesOtherClassifiedAsOperatingExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige Betriebsausgaben (aus operativen Tätigkeiten)</link:label>
    <link:label id="bzk-ww-i_InvestmentOtherFromInvestingActivities_label_de" xlink:label="bzk-ww-i_InvestmentOtherFromInvestingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige Investitionen aus Investitionstätigkeiten</link:label>
    <link:label id="bzk-ww-i_OrganisationCostsOther_label_de" xlink:label="bzk-ww-i_OrganisationCostsOther_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige Organisationskosten</link:label>
    <link:label id="bzk-ww-i_InventoriesOther_label_de" xlink:label="bzk-ww-i_InventoriesOther_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige Vorräte</link:label>
    <link:label id="bzk-ww-i_ChangesValueOtherRealEstatePortfolio_label_de" xlink:label="bzk-ww-i_ChangesValueOtherRealEstatePortfolio_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige Wertänderungen (des) Immobilienportfolios</link:label>
    <link:label id="bzk-ww-i_ReceiptsCompaniesOther_label_de" xlink:label="bzk-ww-i_ReceiptsCompaniesOther_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige betriebliche Einnahmen</link:label>
    <link:label id="bzk-ww-i_DirectOperationalExpensesOtherExploitationPossession_label_de" xlink:label="bzk-ww-i_DirectOperationalExpensesOtherExploitationPossession_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige direkte, operative Abgaben, Verwertung Besitz</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditionsOtherMovements_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditionsOtherMovements_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Sonstige mutations verkaufte Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_GovernmentContributions_label_de" xlink:label="bzk-ww-i_GovernmentContributions_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Staatliche Zuschüsse</link:label>
    <link:label id="bzk-ww-i_IntramuralIncomeClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_IntramuralIncomeClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Stationäre Erträge (NL: "intramurale") (aus operativen Tätigkeiten)</link:label>
    <link:label id="bzk-ww-i_RentalAndManagementActivitiesExpenses_label_de" xlink:label="bzk-ww-i_RentalAndManagementActivitiesExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Steuern Vermietungs- und Verwaltungsaktivitäten</link:label>
    <link:label id="bzk-ww-i_RedemptionDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:label="bzk-ww-i_RedemptionDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Tilgung von Darlehen für DAWI-Investitionen ohne Bürgschaft durch WSW</link:label>
    <link:label id="bzk-ww-i_RedemptionNonDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:label="bzk-ww-i_RedemptionNonDAEBInvestmentNonWSWSecuredLoans_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Tilgung von Darlehen für Nicht-DAWI-Investitionen ohne Bürgschaft durch WSW</link:label>
    <link:label id="bzk-ww-i_RepaymentsInternalLoansClassifiedAsFinancingActivities_label_de" xlink:label="bzk-ww-i_RepaymentsInternalLoansClassifiedAsFinancingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Tilgung von internes Darlehen</link:label>
    <link:label id="bzk-ww-i_RedemptionWSWSecuredLoans_label_de" xlink:label="bzk-ww-i_RedemptionWSWSecuredLoans_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Tilgungen von Darlehen mit WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanRedemptionForm_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanRedemptionForm_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Tilgungsart von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredRedemptionFormLoan_label_de" xlink:label="bzk-ww-i_NonWSWSecuredRedemptionFormLoan_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Tilgungsart von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanLoanType_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanLoanType_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Typ fest oder variabel von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanTypeLoan_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanTypeLoan_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Typ fest oder variabel von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_RevenueSoldRealEstateInDevelopment_label_de" xlink:label="bzk-ww-i_RevenueSoldRealEstateInDevelopment_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Umsatz verkauft(e) Immobilien in Entwicklung</link:label>
    <link:label id="bzk-ww-i_PaymentsAccommodationImprovementsHousingAndNonHousingUnits_label_de" xlink:label="bzk-ww-i_PaymentsAccommodationImprovementsHousingAndNonHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verbesserungen</link:label>
    <link:label id="bzk-ww-i_LiabilitiesToDaebBranch_label_de" xlink:label="bzk-ww-i_LiabilitiesToDaebBranch_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verbindlichkeiten gegenüber der DAWI</link:label>
    <link:label id="bzk-ww-i_Reimbursements_label_de" xlink:label="bzk-ww-i_Reimbursements_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Vergütungen</link:label>
    <link:label id="bzk-ww-i_SalesReceiptsExcludingVOV_label_de" xlink:label="bzk-ww-i_SalesReceiptsExcludingVOV_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufsbelege (exklusif verkaufte Wohneinheiten unter Bedingungen)</link:label>
    <link:label id="bzk-ww-i_SalesIncomeNewBuildingsHousingAndNonHousingUnits_label_de" xlink:label="bzk-ww-i_SalesIncomeNewBuildingsHousingAndNonHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufsbelege Neubau</link:label>
    <link:label id="bzk-ww-i_SalesIncomeRentOfHousingAndNonHousingUnits_label_de" xlink:label="bzk-ww-i_SalesIncomeRentOfHousingAndNonHousingUnits_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufseinnahmen vorhandener Miete</link:label>
    <link:label id="bzk-ww-i_SalesIncomeRealEstatePortfolio_label_de" xlink:label="bzk-ww-i_SalesIncomeRealEstatePortfolio_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufserlös Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_SalesIncomeLand_label_de" xlink:label="bzk-ww-i_SalesIncomeLand_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufserlöse Land</link:label>
    <link:label id="bzk-ww-i_SalesIncomeHousingUnitsVOVAfterPurchase_label_de" xlink:label="bzk-ww-i_SalesIncomeHousingUnitsVOVAfterPurchase_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufserlöse Wohneinheiten (VOV)</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditions_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditions_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufte Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditionsNewBuildings_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditionsNewBuildings_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufte, neugebaute Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldUnderConditionsExistingBuildings_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldUnderConditionsExistingBuildings_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkaufte, vorhandene Wohneinheiten unter Bedingungen</link:label>
    <link:label id="bzk-ww-i_SalesToThirdParties_label_de" xlink:label="bzk-ww-i_SalesToThirdParties_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkäufe an Dritte</link:label>
    <link:label id="bzk-ww-i_SalesToPrivateIndividualsOwnHabitation_label_de" xlink:label="bzk-ww-i_SalesToPrivateIndividualsOwnHabitation_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkäufe an Privatpersonen für ihre eigene Wohnung</link:label>
    <link:label id="bzk-ww-i_SalesToOtherParties_label_de" xlink:label="bzk-ww-i_SalesToOtherParties_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Verkäufe an andere Parteien</link:label>
    <link:label id="bzk-ww-i_LessorLevy_label_de" xlink:label="bzk-ww-i_LessorLevy_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Vermieter-Steuer</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanContractStartDate_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanContractStartDate_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Vertragsbeginn von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_MaintenanceExpensesClassifiedAsOperatingExpenses_label_de" xlink:label="bzk-ww-i_MaintenanceExpensesClassifiedAsOperatingExpenses_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Wartungsaufwendungen (aus opertiven Tätigkeiten)</link:label>
    <link:label id="bzk-ww-i_LandPositionsContractuallyAgreed_label_de" xlink:label="bzk-ww-i_LandPositionsContractuallyAgreed_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Wert der möglicherweise vertraglich vereinbarten und nicht in der Bilanz aufgenommenen Grundbesitzposten</link:label>
    <link:label id="bzk-ww-i_ChangesValueRealEstatePortfolio_label_de" xlink:label="bzk-ww-i_ChangesValueRealEstatePortfolio_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Wertänderungen Immobilienportfolio</link:label>
    <link:label id="bzk-ww-i_PaymentsOtherClassifiedAsInvestingActivities_label_de" xlink:label="bzk-ww-i_PaymentsOtherClassifiedAsInvestingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zahlungen andere</link:label>
    <link:label id="bzk-ww-i_PaymentsCompoundClassifiedAsInvestingActivities_label_de" xlink:label="bzk-ww-i_PaymentsCompoundClassifiedAsInvestingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zahlungen in Verbindungen</link:label>
    <link:label id="bzk-ww-i_CashAndCashEquivalentsHeldForLiquidityBuffer_label_de" xlink:label="bzk-ww-i_CashAndCashEquivalentsHeldForLiquidityBuffer_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zahlungsmittel und Zahlungsmitteläquivalente für Liquiditätspuffer</link:label>
    <link:label id="bzk-ww-i_InterestExpensesInternalLoan_label_de" xlink:label="bzk-ww-i_InterestExpensesInternalLoan_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zinsaufwendungen internes Darlehen</link:label>
    <link:label id="bzk-ww-i_InterestIncomeInternalLoan_label_de" xlink:label="bzk-ww-i_InterestIncomeInternalLoan_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zinserträge internes Darlehen</link:label>
    <link:label id="bzk-ww-i_NonWSWSecuredLoanInterestRate_label_de" xlink:label="bzk-ww-i_NonWSWSecuredLoanInterestRate_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zinssatz von Darlehen ohne WSW-Bürgschaft</link:label>
    <link:label id="bzk-ww-i_InterestPaidExcludingInternalLoansClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_InterestPaidExcludingInternalLoansClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zinszahlung (exklusiv internes Darlehen)</link:label>
    <link:label id="bzk-ww-i_InterestPaidInternalLoansClassifiedAsOperatingActivities_label_de" xlink:label="bzk-ww-i_InterestPaidInternalLoansClassifiedAsOperatingActivities_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zinszahlung internes Darlehen</link:label>
    <link:label id="bzk-ww-i_RealEstateForSale_label_de" xlink:label="bzk-ww-i_RealEstateForSale_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zum Verkauf vorgesehene Immobilien</link:label>
    <link:label id="bzk-ww-i_CashFlowStatementLiveabilityOther_label_de" xlink:label="bzk-ww-i_CashFlowStatementLiveabilityOther_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zurechnung andere Cashflows zur Lebensqualität</link:label>
    <link:label id="bzk-ww-i_CashFlowStatementMaintenanceOther_label_de" xlink:label="bzk-ww-i_CashFlowStatementMaintenanceOther_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Zurechnung sonstige Cashflows zu Instandhaltung</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldRepurchaseUnderConditionsTakenIntoLease_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldRepurchaseUnderConditionsTakenIntoLease_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Züruckkauf verkaufte Wohneinheiten unter Bedingungen und in Leasing genommen</link:label>
    <link:label id="bzk-ww-i_HousingFacilitiesSoldRepurchaseUnderConditionsSoldRegularly_label_de" xlink:label="bzk-ww-i_HousingFacilitiesSoldRepurchaseUnderConditionsSoldRegularly_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Züruckkauf verkaufte Wohneinheiten unter Bedingungen und regelmäßig verkauft</link:label>
    <link:label id="bzk-ww-i_ChangesShortTermCashAndCashEquivalents_label_de" xlink:label="bzk-ww-i_ChangesShortTermCashAndCashEquivalents_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Änderung Tagesgeld</link:label>
    <link:label id="bzk-ww-i_IncomeSocialRealEstate_label_de" xlink:label="bzk-ww-i_IncomeSocialRealEstate_label_de" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="de">Öffentliche Immobilie</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="bzk-ww-i_AdditionalRelevantPositionsMembersManagementDescription_loc" xlink:to="bzk-ww-i_AdditionalRelevantPositionsMembersManagementDescription_label_de" xlink:type="arc"/>
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