<?xml version="1.0"?>
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd http://www.w3.org/1999/xlink http://www.xbrl.org/2003/xlink-2003-12-31.xsd">
  <link:roleRef xlink:type="simple" xlink:href="http://www.xbrl.org/lrr/role/net-2009-12-16.xsd#netLabel" roleURI="http://www.xbrl.org/2009/role/netLabel" />
  <link:labelLink xlink:role="http://www.xbrl.org/2003/role/link" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="NoncurrentFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_NoncurrentFinancialLiabilities" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="NoncurrentFinancialLiabilities_totalLabel_labelfr" xml:lang="fr">Passifs financiers non courants</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncurrentFinancialLiabilities" xlink:to="NoncurrentFinancialLiabilities_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashEquivalents" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="CashEquivalents_periodEndLabel_labelfr" xml:lang="fr">Équivalents de trésorerie de clôture</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashEquivalents" xlink:to="CashEquivalents_periodEndLabel_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="CashEquivalents_periodStartLabel_labelfr" xml:lang="fr">Équivalents de trésorerie d'ouverture </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashEquivalents" xlink:to="CashEquivalents_periodStartLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CurrentFinancialLiabilities" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CurrentFinancialLiabilities" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="CurrentFinancialLiabilities_totalLabel_labelfr" xml:lang="fr">Passifs financiers courants</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentFinancialLiabilities" xlink:to="CurrentFinancialLiabilities_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_totalLabel_labelfr" xml:lang="fr">Flux de trésorerie résultant (utilisés dans le cadre) des activités avant variations du fonds de roulement</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital" xlink:to="CashFlowsFromUsedInOperationsBeforeChangesInWorkingCapital_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="Equity" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_Equity" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="Equity_periodStartLabel_labelfr" xml:lang="fr">Capitaux propres - ouverture</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Equity" xlink:to="Equity_periodStartLabel_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="Equity_periodEndLabel_labelfr" xml:lang="fr">Capitaux propres- clôture</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Equity" xlink:to="Equity_periodEndLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CashAndCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalents" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="CashAndCashEquivalents_periodStartLabel_labelfr" xml:lang="fr">Trésorerie et équivalents de trésorerie d'ouverture </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalents" xlink:to="CashAndCashEquivalents_periodStartLabel_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="CashAndCashEquivalents_periodEndLabel_labelfr" xml:lang="fr">Trésorerie et équivalents de trésorerie de clôture</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalents" xlink:to="CashAndCashEquivalents_periodEndLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="IntangibleAssetsAndGoodwill" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_IntangibleAssetsAndGoodwill" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="IntangibleAssetsAndGoodwill_totalLabel_labelfr" xml:lang="fr">Immobilisations incorporelles et goodwill</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IntangibleAssetsAndGoodwill" xlink:to="IntangibleAssetsAndGoodwill_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="BankOverdraftsClassifiedAsCashEquivalents" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="BankOverdraftsClassifiedAsCashEquivalents_periodEndLabel_labelfr" xml:lang="fr">Découverts bancaires de clôture </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalents" xlink:to="BankOverdraftsClassifiedAsCashEquivalents_periodEndLabel_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="BankOverdraftsClassifiedAsCashEquivalents_periodStartLabel_labelfr" xml:lang="fr">Découverts bancaires d'ouverture </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalents" xlink:to="BankOverdraftsClassifiedAsCashEquivalents_periodStartLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="InvestmentProperty" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_InvestmentProperty" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="InvestmentProperty_totalLabel_labelfr" xml:lang="fr">Immeubles de placement</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentProperty" xlink:to="InvestmentProperty_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:href="https://xbrl.ifrs.org/taxonomy/2022-03-24/full_ifrs/full_ifrs-cor_2022-03-24.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_periodEndLabel_labelfr" xml:lang="fr">Trésorerie et équivalents de trésorerie si différents de l’état de la situation financière fermeture</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:to="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_periodEndLabel_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_periodStartLabel_labelfr" xml:lang="fr">Trésorerie et équivalents de trésorerie si différents de l’état de la situation financière ouverture</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:to="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_periodStartLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CurrentContractAssetsOrLiabilities_Ext" xlink:href="altareit-2023-12-31.xsd#altareit_CurrentContractAssetsOrLiabilities_Ext" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="CurrentContractAssetsOrLiabilities_Ext_label_labelfr" xml:lang="fr">Actifs ou Passifs sur contrats</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentContractAssetsOrLiabilities_Ext" xlink:to="CurrentContractAssetsOrLiabilities_Ext_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetChargeToProvisionsForCurrentAssets" xlink:href="altareit-2023-12-31.xsd#altareit_NetChargeToProvisionsForCurrentAssets" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetChargeToProvisionsForCurrentAssets_label_labelfr" xml:lang="fr">Dotations nettes aux provisions sur actif circulant </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetChargeToProvisionsForCurrentAssets" xlink:to="NetChargeToProvisionsForCurrentAssets_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetFinancialIndebtednessAndSecurities_Ext" xlink:href="altareit-2023-12-31.xsd#altareit_NetFinancialIndebtednessAndSecurities_Ext" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetFinancialIndebtednessAndSecurities_Ext_label_labelfr" xml:lang="fr">Endettement financier net et sûretés   </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetFinancialIndebtednessAndSecurities_Ext" xlink:to="NetFinancialIndebtednessAndSecurities_Ext_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NoncurrentAdvancesFromGroupShareholdersAndPartners" xlink:href="altareit-2023-12-31.xsd#altareit_NoncurrentAdvancesFromGroupShareholdersAndPartners" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NoncurrentAdvancesFromGroupShareholdersAndPartners_label_labelfr" xml:lang="fr">dont Avances Groupe et associés</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncurrentAdvancesFromGroupShareholdersAndPartners" xlink:to="NoncurrentAdvancesFromGroupShareholdersAndPartners_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:href="altareit-2023-12-31.xsd#altareit_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts_label_labelfr" xml:lang="fr">Cession d’actifs immobilisés et remboursement d’avances et acomptes(a)  </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:to="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="EquityProfitLossAttributableToNonControllingInterests" xlink:href="altareit-2023-12-31.xsd#altareit_EquityProfitLossAttributableToNonControllingInterests" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="EquityProfitLossAttributableToNonControllingInterests_label_labelfr" xml:lang="fr">Résultat, part des actionnaires minoritaires des ?liales </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityProfitLossAttributableToNonControllingInterests" xlink:to="EquityProfitLossAttributableToNonControllingInterests_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetPropertyIncome" xlink:href="altareit-2023-12-31.xsd#altareit_NetPropertyIncome" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetPropertyIncome_label_labelfr" xml:lang="fr">Marge immobilière </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetPropertyIncome" xlink:to="NetPropertyIncome_label_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="NetPropertyIncome_totalLabel_labelfr" xml:lang="fr">Marge immobilière </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetPropertyIncome" xlink:to="NetPropertyIncome_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="OperatingWorkingCapitalRequirement_Ext" xlink:href="altareit-2023-12-31.xsd#altareit_OperatingWorkingCapitalRequirement_Ext" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="OperatingWorkingCapitalRequirement_Ext_label_labelfr" xml:lang="fr">Besoin en fonds de roulement d’exploitation</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingWorkingCapitalRequirement_Ext" xlink:to="OperatingWorkingCapitalRequirement_Ext_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:href="altareit-2023-12-31.xsd#altareit_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_label_labelfr" xml:lang="fr">Découverts bancaires</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:to="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_label_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:label="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_periodEndLabel_labelfr" xml:lang="fr">Découverts bancaires</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:to="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_periodEndLabel_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:label="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_periodStartLabel_labelfr" xml:lang="fr">Découverts bancaires  - ouverture</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:to="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_periodStartLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CostOfNetDebt" xlink:href="altareit-2023-12-31.xsd#altareit_CostOfNetDebt" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="CostOfNetDebt_label_labelfr" xml:lang="fr">Coût de l’endettement net</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfNetDebt" xlink:to="CostOfNetDebt_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="InvestmentPropertyAtAmortizedCost" xlink:href="altareit-2023-12-31.xsd#altareit_InvestmentPropertyAtAmortizedCost" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="InvestmentPropertyAtAmortizedCost_label_labelfr" xml:lang="fr">dont Immeubles de placement évalués au coût </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentPropertyAtAmortizedCost" xlink:to="InvestmentPropertyAtAmortizedCost_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CostsOfDebt" xlink:href="altareit-2023-12-31.xsd#altareit_CostsOfDebt" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="CostsOfDebt_label_labelfr" xml:lang="fr">Charges ?nancières</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsOfDebt" xlink:to="CostsOfDebt_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:href="altareit-2023-12-31.xsd#altareit_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate_label_labelfr" xml:lang="fr">Amortissement des relations clientèles  </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:to="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="ReservesAndRetainedEarningMember" xlink:href="altareit-2023-12-31.xsd#altareit_ReservesAndRetainedEarningMember" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ReservesAndRetainedEarningMember_label_labelfr" xml:lang="fr">Réserves et résultats non distribués </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReservesAndRetainedEarningMember" xlink:to="ReservesAndRetainedEarningMember_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="AssetsAndImpairmentTests_Ext" xlink:href="altareit-2023-12-31.xsd#altareit_AssetsAndImpairmentTests_Ext" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="AssetsAndImpairmentTests_Ext_label_labelfr" xml:lang="fr">Actifs et tests de valeur   </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAndImpairmentTests_Ext" xlink:to="AssetsAndImpairmentTests_Ext_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="InvestmentPropertyAtFairValue" xlink:href="altareit-2023-12-31.xsd#altareit_InvestmentPropertyAtFairValue" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="InvestmentPropertyAtFairValue_label_labelfr" xml:lang="fr">dont Immeubles de placement évalués à la juste valeur </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentPropertyAtFairValue" xlink:to="InvestmentPropertyAtFairValue_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:href="altareit-2023-12-31.xsd#altareit_ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome_label_labelfr" xml:lang="fr">Résultat net avant impôt et avant intérêts nets </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:to="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome_label_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome_totalLabel_labelfr" xml:lang="fr">Résultat net avant impôt et avant intérêts nets </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:to="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:href="altareit-2023-12-31.xsd#altareit_InvestmentAndReceivablesAccountedForUsingEquityMethod" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="InvestmentAndReceivablesAccountedForUsingEquityMethod_label_labelfr" xml:lang="fr">Titres et créances sur les sociétés mises en équivalence  </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:to="InvestmentAndReceivablesAccountedForUsingEquityMethod_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:href="altareit-2023-12-31.xsd#altareit_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent_label_labelfr" xml:lang="fr">Réserves </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:to="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CurrentAdvancesFromGroupShareholdersAndPartners" xlink:href="altareit-2023-12-31.xsd#altareit_CurrentAdvancesFromGroupShareholdersAndPartners" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="CurrentAdvancesFromGroupShareholdersAndPartners_label_labelfr" xml:lang="fr">dont Avances Groupe et associés </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentAdvancesFromGroupShareholdersAndPartners" xlink:to="CurrentAdvancesFromGroupShareholdersAndPartners_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="EquityProfitLossAttributableToOwnersOfParent" xlink:href="altareit-2023-12-31.xsd#altareit_EquityProfitLossAttributableToOwnersOfParent" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="EquityProfitLossAttributableToOwnersOfParent_label_labelfr" xml:lang="fr">Résultat, part des actionnaires d’Altarea SCA </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityProfitLossAttributableToOwnersOfParent" xlink:to="EquityProfitLossAttributableToOwnersOfParent_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="RightOfUseOnInvestmentPropertyAtFairValue" xlink:href="altareit-2023-12-31.xsd#altareit_RightOfUseOnInvestmentPropertyAtFairValue" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="RightOfUseOnInvestmentPropertyAtFairValue_label_labelfr" xml:lang="fr">dont Droits d’utilisation sur Immeubles de placement  </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RightOfUseOnInvestmentPropertyAtFairValue" xlink:to="RightOfUseOnInvestmentPropertyAtFairValue_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetGainLossOnDisposalOfInvestments" xlink:href="altareit-2023-12-31.xsd#altareit_NetGainLossOnDisposalOfInvestments" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetGainLossOnDisposalOfInvestments_label_labelfr" xml:lang="fr">Résultats de cession des participations  </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetGainLossOnDisposalOfInvestments" xlink:to="NetGainLossOnDisposalOfInvestments_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="SignificantEventsAndConsolidationScopeVariation_Ext" xlink:href="altareit-2023-12-31.xsd#altareit_SignificantEventsAndConsolidationScopeVariation_Ext" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="SignificantEventsAndConsolidationScopeVariation_Ext_label_labelfr" xml:lang="fr">Faits significatifs et evolution du perimetre de consolidation   </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantEventsAndConsolidationScopeVariation_Ext" xlink:to="SignificantEventsAndConsolidationScopeVariation_Ext_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="IssuanceOfDebtAndOtherFinancialLiabilities" xlink:href="altareit-2023-12-31.xsd#altareit_IssuanceOfDebtAndOtherFinancialLiabilities" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="IssuanceOfDebtAndOtherFinancialLiabilities_label_labelfr" xml:lang="fr">Émission d’emprunts et autres dettes ?nancières </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IssuanceOfDebtAndOtherFinancialLiabilities" xlink:to="IssuanceOfDebtAndOtherFinancialLiabilities_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="MiscellaneousOtherOperatingIncomeExpense" xlink:href="altareit-2023-12-31.xsd#altareit_MiscellaneousOtherOperatingIncomeExpense" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="MiscellaneousOtherOperatingIncomeExpense_label_labelfr" xml:lang="fr">Autres produits et charges</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MiscellaneousOtherOperatingIncomeExpense" xlink:to="MiscellaneousOtherOperatingIncomeExpense_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xlink:href="altareit-2023-12-31.xsd#altareit_OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames_label_labelfr" xml:lang="fr">Autres immobilisations incorporelles</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xlink:to="OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:href="altareit-2023-12-31.xsd#altareit_ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_label_labelfr" xml:lang="fr">Résultat opérationnel après quote-part du résultat net des entreprises mises en équivalence</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:to="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_label_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_totalLabel_labelfr" xml:lang="fr">Résultat opérationnel après quote-part du résultat net des entreprises mises en équivalence</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:to="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetChargeToProvisionsForRisksAndContingencies" xlink:href="altareit-2023-12-31.xsd#altareit_NetChargeToProvisionsForRisksAndContingencies" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetChargeToProvisionsForRisksAndContingencies_label_labelfr" xml:lang="fr">Dotations nettes aux provisions  </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetChargeToProvisionsForRisksAndContingencies" xlink:to="NetChargeToProvisionsForRisksAndContingencies_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NoncurrentDepositsAndSecurityInterestsReceived" xlink:href="altareit-2023-12-31.xsd#altareit_NoncurrentDepositsAndSecurityInterestsReceived" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NoncurrentDepositsAndSecurityInterestsReceived_label_labelfr" xml:lang="fr">Dépôts et cautionnements reçus</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncurrentDepositsAndSecurityInterestsReceived" xlink:to="NoncurrentDepositsAndSecurityInterestsReceived_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:href="altareit-2023-12-31.xsd#altareit_RepaymentOfBorrowingsAndOtherFinancialLiabilities" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="RepaymentOfBorrowingsAndOtherFinancialLiabilities_label_labelfr" xml:lang="fr">Remboursement d’emprunts et autres dettes ?nancières </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:to="RepaymentOfBorrowingsAndOtherFinancialLiabilities_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:href="altareit-2023-12-31.xsd#altareit_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived_label_labelfr" xml:lang="fr">Variation nette des dépôts et cautionnements </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:to="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetOverheadExpense" xlink:href="altareit-2023-12-31.xsd#altareit_NetOverheadExpense" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetOverheadExpense_label_labelfr" xml:lang="fr">Frais de structure nets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetOverheadExpense" xlink:to="NetOverheadExpense_label_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="NetOverheadExpense_totalLabel_labelfr" xml:lang="fr">Frais de structure nets</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetOverheadExpense" xlink:to="NetOverheadExpense_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="ChangesInCashAndCashEquivalentsIfDifferentFromStatementOfFinancialPositionAbstract" xlink:href="altareit-2023-12-31.xsd#altareit_ChangesInCashAndCashEquivalentsIfDifferentFromStatementOfFinancialPositionAbstract" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ChangesInCashAndCashEquivalentsIfDifferentFromStatementOfFinancialPositionAbstract_label_labelfr" xml:lang="fr">Variation Trésorerie et équivalents de trésorerie si différents de l’état de la situation financière Abstract</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ChangesInCashAndCashEquivalentsIfDifferentFromStatementOfFinancialPositionAbstract" xlink:to="ChangesInCashAndCashEquivalentsIfDifferentFromStatementOfFinancialPositionAbstract_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="Liabilities_Ext" xlink:href="altareit-2023-12-31.xsd#altareit_Liabilities_Ext" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="Liabilities_Ext_label_labelfr" xml:lang="fr">Passifs</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Liabilities_Ext" xlink:to="Liabilities_Ext_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:href="altareit-2023-12-31.xsd#altareit_ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_label_labelfr" xml:lang="fr">Résultat opérationnel avant quote-part du résultat net des entreprises mises en équivalence</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:to="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_label_labelfr" xlink:type="arc" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:label="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_totalLabel_labelfr" xml:lang="fr">Résultat opérationnel avant quote-part du résultat net des entreprises mises en équivalence</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:to="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod_totalLabel_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="NetChangeInInvestmentsAndDerivativeFinancialInstruments" xlink:href="altareit-2023-12-31.xsd#altareit_NetChangeInInvestmentsAndDerivativeFinancialInstruments" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="NetChangeInInvestmentsAndDerivativeFinancialInstruments_label_labelfr" xml:lang="fr">Variation nette des placements et des instruments ?nanciers dérivés</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetChangeInInvestmentsAndDerivativeFinancialInstruments" xlink:to="NetChangeInInvestmentsAndDerivativeFinancialInstruments_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:href="altareit-2023-12-31.xsd#altareit_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests_label_labelfr" xml:lang="fr">Réserves, part des actionnaires minoritaires des ?liales </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:to="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CurrentDerivativeFinancialLiabilitiesHeldForTrading" xlink:href="altareit-2023-12-31.xsd#altareit_CurrentDerivativeFinancialLiabilitiesHeldForTrading" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="CurrentDerivativeFinancialLiabilitiesHeldForTrading_label_labelfr" xml:lang="fr">Instruments ?nanciers dérivés</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentDerivativeFinancialLiabilitiesHeldForTrading" xlink:to="CurrentDerivativeFinancialLiabilitiesHeldForTrading_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:href="altareit-2023-12-31.xsd#altareit_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets_label_labelfr" xml:lang="fr">Pertes de valeur nettes sur autres actifs immobilisés  </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:to="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="OtherDepreciationExpense" xlink:href="altareit-2023-12-31.xsd#altareit_OtherDepreciationExpense" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="OtherDepreciationExpense_label_labelfr" xml:lang="fr">Dotations aux amortissements </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherDepreciationExpense" xlink:to="OtherDepreciationExpense_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:href="altareit-2023-12-31.xsd#altareit_AdjustmentsForNetInterestExpenseOrIncomeAndDividends" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="AdjustmentsForNetInterestExpenseOrIncomeAndDividends_label_labelfr" xml:lang="fr">Élimination des charges (produits) d’intérêts nettes et dividendes </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:to="AdjustmentsForNetInterestExpenseOrIncomeAndDividends_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="CustomerRelationship" xlink:href="altareit-2023-12-31.xsd#altareit_CustomerRelationship" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="CustomerRelationship_label_labelfr" xml:lang="fr">Relations Clientèles</link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerRelationship" xlink:to="CustomerRelationship_label_labelfr" xlink:type="arc" />
    <link:loc xlink:type="locator" xlink:label="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:href="altareit-2023-12-31.xsd#altareit_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" />
    <link:label xlink:type="resource" xlink:role="http://www.xbrl.org/2003/role/label" xlink:label="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense_label_labelfr" xml:lang="fr">Dotations aux amortissements des biens d’exploitation </link:label>
    <link:labelArc xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:to="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense_label_labelfr" xlink:type="arc" />
  </link:labelLink>
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