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    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_BankOverdraftsClassifiedAsCashEquivalents" xlink:label="BankOverdraftsClassifiedAsCashEquivalents_2" xlink:title="BankOverdraftsClassifiedAsCashEquivalents"/>
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    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalents_2" xlink:to="label_BankOverdraftsClassifiedAsCashEquivalents_2" xlink:title="label: BankOverdraftsClassifiedAsCashEquivalents to label_BankOverdraftsClassifiedAsCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="CashAndCashEquivalents" xlink:title="CashAndCashEquivalents"/>
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_CashAndCashEquivalents" xml:lang="fr" id="label_CashAndCashEquivalents">Trésorerie et équivalents de trésorerie d'ouverture </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalents" xlink:to="label_CashAndCashEquivalents" xlink:title="label: CashAndCashEquivalents to label_CashAndCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashAndCashEquivalents" xlink:label="CashAndCashEquivalents_2" xlink:title="CashAndCashEquivalents"/>
    <link:label xlink:type="resource" xlink:label="label_CashAndCashEquivalents_2" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_CashAndCashEquivalents" xml:lang="fr" id="label_CashAndCashEquivalents_2">Trésorerie et équivalents de trésorerie de clôture</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashAndCashEquivalents_2" xlink:to="label_CashAndCashEquivalents_2" xlink:title="label: CashAndCashEquivalents to label_CashAndCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_Equity" xlink:label="Equity" xlink:title="Equity"/>
    <link:label xlink:type="resource" xlink:label="label_Equity" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_Equity" xml:lang="fr" id="label_Equity">Capitaux propres - ouverture</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Equity" xlink:to="label_Equity" xlink:title="label: Equity to label_Equity"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_Equity" xlink:label="Equity_2" xlink:title="Equity"/>
    <link:label xlink:type="resource" xlink:label="label_Equity_2" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_Equity" xml:lang="fr" id="label_Equity_2">Capitaux propres- clôture</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="Equity_2" xlink:to="label_Equity_2" xlink:title="label: Equity to label_Equity"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashEquivalents" xlink:label="CashEquivalents" xlink:title="CashEquivalents"/>
    <link:label xlink:type="resource" xlink:label="label_CashEquivalents" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_CashEquivalents" xml:lang="fr" id="label_CashEquivalents">Équivalents de trésorerie de clôture</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashEquivalents" xlink:to="label_CashEquivalents" xlink:title="label: CashEquivalents to label_CashEquivalents"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashEquivalents" xlink:label="CashEquivalents_2" xlink:title="CashEquivalents"/>
    <link:label xlink:type="resource" xlink:label="label_CashEquivalents_2" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_CashEquivalents" xml:lang="fr" id="label_CashEquivalents_2">Équivalents de trésorerie d'ouverture </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CashEquivalents_2" xlink:to="label_CashEquivalents_2" xlink:title="label: CashEquivalents to label_CashEquivalents"/>
    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:label="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:title="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition"/>
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    <link:loc xlink:type="locator" xlink:href="http://xbrl.ifrs.org/taxonomy/2021-03-24/full_ifrs/full_ifrs-cor_2021-03-24.xsd#ifrs-full_CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition" xlink:label="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition_2" xlink:title="CashAndCashEquivalentsIfDifferentFromStatementOfFinancialPosition"/>
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    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:label="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:title="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate"/>
    <link:label xlink:type="resource" xlink:label="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xml:lang="fr" id="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate">Amortissement des relations clientèles  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:to="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:title="label: ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate to label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate"/>
    <link:label xlink:type="resource" xlink:label="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xml:lang="fr" id="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate_2">Montant des dotations aux amortissements : L’amortissement correspond à la répartition systématique des montants amortissables d’actifs sur leur durée d’utilité</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate" xlink:to="label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate_2" xlink:title="label: ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate to label_ImpairmentLossOfCustomerRelatedIntangibleAssetsRecognisedAsOfAcquisitionDate"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetPropertyIncome" xlink:label="NetPropertyIncome" xlink:title="NetPropertyIncome"/>
    <link:label xlink:type="resource" xlink:label="label_NetPropertyIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetPropertyIncome" xml:lang="fr" id="label_NetPropertyIncome">Marge immobilière </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetPropertyIncome" xlink:to="label_NetPropertyIncome" xlink:title="label: NetPropertyIncome to label_NetPropertyIncome"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:label="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:title="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense"/>
    <link:label xlink:type="resource" xlink:label="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xml:lang="fr" id="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense">Dotations aux amortissements des biens d’exploitation </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:to="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:title="label: DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense to label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense"/>
    <link:label xlink:type="resource" xlink:label="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xml:lang="fr" id="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense_2">Montant des dotations aux amortissements : L’amortissement correspond à la répartition systématique des montants amortissables d’actifs sur leur durée d’utilité </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense" xlink:to="label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense_2" xlink:title="label: DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense to label_DepreciationAndAmortisationExpenseIncludedInNetOverheadExpense"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetOverheadExpense" xlink:label="NetOverheadExpense" xlink:title="NetOverheadExpense"/>
    <link:label xlink:type="resource" xlink:label="label_NetOverheadExpense" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetOverheadExpense" xml:lang="fr" id="label_NetOverheadExpense">Frais de structure nets</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetOverheadExpense" xlink:to="label_NetOverheadExpense" xlink:title="label: NetOverheadExpense to label_NetOverheadExpense"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_MiscellaneousOtherOperatingIncomeExpense" xlink:label="MiscellaneousOtherOperatingIncomeExpense_2" xlink:title="MiscellaneousOtherOperatingIncomeExpense"/>
    <link:label xlink:type="resource" xlink:label="label_MiscellaneousOtherOperatingIncomeExpense_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_MiscellaneousOtherOperatingIncomeExpense" xml:lang="fr" id="label_MiscellaneousOtherOperatingIncomeExpense_2">Autres produits et charges</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MiscellaneousOtherOperatingIncomeExpense_2" xlink:to="label_MiscellaneousOtherOperatingIncomeExpense_2" xlink:title="label: MiscellaneousOtherOperatingIncomeExpense to label_MiscellaneousOtherOperatingIncomeExpense"/>
    <link:label xlink:type="resource" xlink:label="label_MiscellaneousOtherOperatingIncomeExpense_3" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_MiscellaneousOtherOperatingIncomeExpense" xml:lang="fr" id="label_MiscellaneousOtherOperatingIncomeExpense_3">Montant des recettes (charges) d’exploitation que l’entité ne communique pas séparément dans les mêmes états ou notes. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="MiscellaneousOtherOperatingIncomeExpense_2" xlink:to="label_MiscellaneousOtherOperatingIncomeExpense_3" xlink:title="label: MiscellaneousOtherOperatingIncomeExpense to label_MiscellaneousOtherOperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_OtherDepreciationExpense" xlink:label="OtherDepreciationExpense_2" xlink:title="OtherDepreciationExpense"/>
    <link:label xlink:type="resource" xlink:label="label_OtherDepreciationExpense_2" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherDepreciationExpense" xml:lang="fr" id="label_OtherDepreciationExpense_2">Dotations aux amortissements </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherDepreciationExpense_2" xlink:to="label_OtherDepreciationExpense_2" xlink:title="label: OtherDepreciationExpense to label_OtherDepreciationExpense"/>
    <link:label xlink:type="resource" xlink:label="label_OtherDepreciationExpense" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_OtherDepreciationExpense" xml:lang="fr" id="label_OtherDepreciationExpense">Montant des dotations aux amortissements.  L’amortissement correspond à la répartition systématique des montants amortissables d’actifs sur leur durée d’utilité. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherDepreciationExpense_2" xlink:to="label_OtherDepreciationExpense" xlink:title="label: OtherDepreciationExpense to label_OtherDepreciationExpense"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:label="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:title="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets"/>
    <link:label xlink:type="resource" xlink:label="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xml:lang="fr" id="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets">Pertes de valeur nettes sur autres actifs immobilisés  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:to="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:title="label: ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets to label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets"/>
    <link:label xlink:type="resource" xlink:label="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xml:lang="fr" id="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets_2">Montant de la perte de valeur comptabilisée en résultat</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets" xlink:to="label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets_2" xlink:title="label: ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets to label_ImpairmentLossReversalOfImpairmentLossOtherNoncurrentAssets"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetChargeToProvisionsForRisksAndContingencies" xlink:label="NetChargeToProvisionsForRisksAndContingencies" xlink:title="NetChargeToProvisionsForRisksAndContingencies"/>
    <link:label xlink:type="resource" xlink:label="label_NetChargeToProvisionsForRisksAndContingencies" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetChargeToProvisionsForRisksAndContingencies" xml:lang="fr" id="label_NetChargeToProvisionsForRisksAndContingencies">Dotations nettes aux provisions  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetChargeToProvisionsForRisksAndContingencies" xlink:to="label_NetChargeToProvisionsForRisksAndContingencies" xlink:title="label: NetChargeToProvisionsForRisksAndContingencies to label_NetChargeToProvisionsForRisksAndContingencies"/>
    <link:label xlink:type="resource" xlink:label="label_NetChargeToProvisionsForRisksAndContingencies_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NetChargeToProvisionsForRisksAndContingencies" xml:lang="fr" id="label_NetChargeToProvisionsForRisksAndContingencies_2">Autres charges, par nature : Montant des charges que l’entité ne communique pas séparément dans les mêmes états ou notes, lorsqu’elle utilise la forme «charges par nature» pour son analyse des charges. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetChargeToProvisionsForRisksAndContingencies" xlink:to="label_NetChargeToProvisionsForRisksAndContingencies_2" xlink:title="label: NetChargeToProvisionsForRisksAndContingencies to label_NetChargeToProvisionsForRisksAndContingencies"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:label="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:title="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"/>
    <link:label xlink:type="resource" xlink:label="label_ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xml:lang="fr" id="label_ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod">Résultat opérationnel avant quote-part du résultat net des entreprises mises en équivalence</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:to="label_ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:title="label: ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod to label_ProfitLossFromOperatingActivitiesBeforeShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:label="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:title="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"/>
    <link:label xlink:type="resource" xlink:label="label_ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xml:lang="fr" id="label_ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod">Résultat opérationnel après quote-part du résultat net des entreprises mises en équivalence</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:to="label_ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod" xlink:title="label: ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod to label_ProfitLossFromOperatingActivitiesAfterShareOfProfitLossOfAssociatesAndJointVenturesAccountedForUsingEquityMethod"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_CostOfNetDebt" xlink:label="CostOfNetDebt" xlink:title="CostOfNetDebt"/>
    <link:label xlink:type="resource" xlink:label="label_CostOfNetDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostOfNetDebt" xml:lang="fr" id="label_CostOfNetDebt">Coût de l’endettement net</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostOfNetDebt" xlink:to="label_CostOfNetDebt" xlink:title="label: CostOfNetDebt to label_CostOfNetDebt"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_CostsOfDebt" xlink:label="CostsOfDebt" xlink:title="CostsOfDebt"/>
    <link:label xlink:type="resource" xlink:label="label_CostsOfDebt" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CostsOfDebt" xml:lang="fr" id="label_CostsOfDebt">Charges ﬁnancières</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsOfDebt" xlink:to="label_CostsOfDebt" xlink:title="label: CostsOfDebt to label_CostsOfDebt"/>
    <link:label xlink:type="resource" xlink:label="label_CostsOfDebt_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CostsOfDebt" xml:lang="fr" id="label_CostsOfDebt_2">"	Montant des charges associées aux activités de financement de l’entité." </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CostsOfDebt" xlink:to="label_CostsOfDebt_2" xlink:title="label: CostsOfDebt to label_CostsOfDebt"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetGainLossOnDisposalOfInvestments" xlink:label="NetGainLossOnDisposalOfInvestments" xlink:title="NetGainLossOnDisposalOfInvestments"/>
    <link:label xlink:type="resource" xlink:label="label_NetGainLossOnDisposalOfInvestments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetGainLossOnDisposalOfInvestments" xml:lang="fr" id="label_NetGainLossOnDisposalOfInvestments">Résultats de cession des participations  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetGainLossOnDisposalOfInvestments" xlink:to="label_NetGainLossOnDisposalOfInvestments" xlink:title="label: NetGainLossOnDisposalOfInvestments to label_NetGainLossOnDisposalOfInvestments"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_InvestmentPropertyAtFairValue" xlink:label="IinvestmentPropertyAtFairValue" xlink:title="IinvestmentPropertyAtFairValue"/>
    <link:label xlink:type="resource" xlink:label="label_IinvestmentPropertyAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IinvestmentPropertyAtFairValue" xml:lang="fr" id="label_IinvestmentPropertyAtFairValue">dont Immeubles de placement évalués à la juste valeur </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IinvestmentPropertyAtFairValue" xlink:to="label_IinvestmentPropertyAtFairValue" xlink:title="label: IinvestmentPropertyAtFairValue to label_IinvestmentPropertyAtFairValue"/>
    <link:label xlink:type="resource" xlink:label="label_IinvestmentPropertyAtFairValue_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IinvestmentPropertyAtFairValue" xml:lang="fr" id="label_IinvestmentPropertyAtFairValue_2">Montant d’un bien immobilier (terrain ou bâtiment – ou partie d’un bâtiment – ou les deux) détenu (par le propriétaire ou par le preneur en tant qu’actif lié au droit d’utilisation) pour en retirer des loyers ou pour valoriser le capital ou les deux, plutôt que pour: a) l’utiliser dans la production ou la fourniture de biens ou de services ou à des fins administratives; ou b) le vendre dans le cadre de l’activité ordinaire. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IinvestmentPropertyAtFairValue" xlink:to="label_IinvestmentPropertyAtFairValue_2" xlink:title="label: IinvestmentPropertyAtFairValue to label_IinvestmentPropertyAtFairValue"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_InvestmentPropertyAtAmortizedCost" xlink:label="InvestmentPropertyAtAmortizedCost" xlink:title="InvestmentPropertyAtAmortizedCost"/>
    <link:label xlink:type="resource" xlink:label="label_InvestmentPropertyAtAmortizedCost" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InvestmentPropertyAtAmortizedCost" xml:lang="fr" id="label_InvestmentPropertyAtAmortizedCost">dont Immeubles de placement évalués au coût </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentPropertyAtAmortizedCost" xlink:to="label_InvestmentPropertyAtAmortizedCost" xlink:title="label: InvestmentPropertyAtAmortizedCost to label_InvestmentPropertyAtAmortizedCost"/>
    <link:label xlink:type="resource" xlink:label="label_InvestmentPropertyAtAmortizedCost_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_InvestmentPropertyAtAmortizedCost" xml:lang="fr" id="label_InvestmentPropertyAtAmortizedCost_2">Montant d’un bien immobilier (terrain ou bâtiment – ou partie d’un bâtiment – ou les deux) détenu (par le propriétaire ou par le preneur en tant qu’actif lié au droit d’utilisation) pour en retirer des loyers ou pour valoriser le capital ou les deux, plutôt que pour: a) l’utiliser dans la production ou la fourniture de biens ou de services ou à des fins administratives; ou b) le vendre dans le cadre de l’activité ordinaire. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentPropertyAtAmortizedCost" xlink:to="label_InvestmentPropertyAtAmortizedCost_2" xlink:title="label: InvestmentPropertyAtAmortizedCost to label_InvestmentPropertyAtAmortizedCost"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_RightOfUseOnInvestmentPropertyAtFairValue" xlink:label="RightOfUseOnInvestmentPropertyAtFairValue" xlink:title="RightOfUseOnInvestmentPropertyAtFairValue"/>
    <link:label xlink:type="resource" xlink:label="label_RightOfUseOnInvestmentPropertyAtFairValue" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RightOfUseOnInvestmentPropertyAtFairValue" xml:lang="fr" id="label_RightOfUseOnInvestmentPropertyAtFairValue">dont Droits d’utilisation sur Immeubles de placement  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RightOfUseOnInvestmentPropertyAtFairValue" xlink:to="label_RightOfUseOnInvestmentPropertyAtFairValue" xlink:title="label: RightOfUseOnInvestmentPropertyAtFairValue to label_RightOfUseOnInvestmentPropertyAtFairValue"/>
    <link:label xlink:type="resource" xlink:label="label_RightOfUseOnInvestmentPropertyAtFairValue_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RightOfUseOnInvestmentPropertyAtFairValue" xml:lang="fr" id="label_RightOfUseOnInvestmentPropertyAtFairValue_2">Montant des actifs qui représentent le droit d’un preneur d’utiliser un actif sous-jacent pendant la durée du contrat de location. Un actif sous-jacent est un actif qui fait l’objet d’un contrat de location et dont le droit d’utilisation est accordé au preneur par le bailleur. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RightOfUseOnInvestmentPropertyAtFairValue" xlink:to="label_RightOfUseOnInvestmentPropertyAtFairValue_2" xlink:title="label: RightOfUseOnInvestmentPropertyAtFairValue to label_RightOfUseOnInvestmentPropertyAtFairValue"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:label="InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:title="InvestmentAndReceivablesAccountedForUsingEquityMethod"/>
    <link:label xlink:type="resource" xlink:label="label_InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_InvestmentAndReceivablesAccountedForUsingEquityMethod" xml:lang="fr" id="label_InvestmentAndReceivablesAccountedForUsingEquityMethod">Titres et créances sur les sociétés mises en équivalence  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:to="label_InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:title="label: InvestmentAndReceivablesAccountedForUsingEquityMethod to label_InvestmentAndReceivablesAccountedForUsingEquityMethod"/>
    <link:label xlink:type="resource" xlink:label="label_InvestmentAndReceivablesAccountedForUsingEquityMethod_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_InvestmentAndReceivablesAccountedForUsingEquityMethod" xml:lang="fr" id="label_InvestmentAndReceivablesAccountedForUsingEquityMethod_2">Montant des actifs financiers non courants</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="InvestmentAndReceivablesAccountedForUsingEquityMethod" xlink:to="label_InvestmentAndReceivablesAccountedForUsingEquityMethod_2" xlink:title="label: InvestmentAndReceivablesAccountedForUsingEquityMethod to label_InvestmentAndReceivablesAccountedForUsingEquityMethod"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:label="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:title="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent"/>
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xml:lang="fr" id="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent">Réserves </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:to="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:title="label: RetainedEarningsAndOtherReservesAttributableToOwnersOfParent to label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent"/>
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xml:lang="fr" id="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent_2">Montant des capitaux propres attribuables aux propriétaires de la société mère. Exclut spécifiquement les participations ne donnant pas le contrôle </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAndOtherReservesAttributableToOwnersOfParent" xlink:to="label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent_2" xlink:title="label: RetainedEarningsAndOtherReservesAttributableToOwnersOfParent to label_RetainedEarningsAndOtherReservesAttributableToOwnersOfParent"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_EquityProfitLossAttributableToOwnersOfParent" xlink:label="EquityProfitLossAttributableToOwnersOfParent" xlink:title="EquityProfitLossAttributableToOwnersOfParent"/>
    <link:label xlink:type="resource" xlink:label="label_EquityProfitLossAttributableToOwnersOfParent" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityProfitLossAttributableToOwnersOfParent" xml:lang="fr" id="label_EquityProfitLossAttributableToOwnersOfParent">Résultat, part des actionnaires d’Altarea SCA </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityProfitLossAttributableToOwnersOfParent" xlink:to="label_EquityProfitLossAttributableToOwnersOfParent" xlink:title="label: EquityProfitLossAttributableToOwnersOfParent to label_EquityProfitLossAttributableToOwnersOfParent"/>
    <link:label xlink:type="resource" xlink:label="label_EquityProfitLossAttributableToOwnersOfParent_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EquityProfitLossAttributableToOwnersOfParent" xml:lang="fr" id="label_EquityProfitLossAttributableToOwnersOfParent_2">Composante de capitaux propres représentant le cumul des résultats non distribués ou du déficit de l’entité. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityProfitLossAttributableToOwnersOfParent" xlink:to="label_EquityProfitLossAttributableToOwnersOfParent_2" xlink:title="label: EquityProfitLossAttributableToOwnersOfParent to label_EquityProfitLossAttributableToOwnersOfParent"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:label="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:title="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests"/>
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xml:lang="fr" id="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests">Réserves, part des actionnaires minoritaires des ﬁliales </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:to="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:title="label: RetainedEarningsAndOtherReservesAttributableToNonControllingInterests to label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests"/>
    <link:label xlink:type="resource" xlink:label="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xml:lang="fr" id="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests_2">Montant des capitaux propres d’une filiale qui ne sont pas attribuables, directement ou indirectement, à une société mère.  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RetainedEarningsAndOtherReservesAttributableToNonControllingInterests" xlink:to="label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests_2" xlink:title="label: RetainedEarningsAndOtherReservesAttributableToNonControllingInterests to label_RetainedEarningsAndOtherReservesAttributableToNonControllingInterests"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_EquityProfitLossAttributableToNonControllingInterests" xlink:label="EquityProfitLossAttributableToNonControllingInterests" xlink:title="EquityProfitLossAttributableToNonControllingInterests"/>
    <link:label xlink:type="resource" xlink:label="label_EquityProfitLossAttributableToNonControllingInterests" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_EquityProfitLossAttributableToNonControllingInterests" xml:lang="fr" id="label_EquityProfitLossAttributableToNonControllingInterests">Résultat, part des actionnaires minoritaires des ﬁliales </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityProfitLossAttributableToNonControllingInterests" xlink:to="label_EquityProfitLossAttributableToNonControllingInterests" xlink:title="label: EquityProfitLossAttributableToNonControllingInterests to label_EquityProfitLossAttributableToNonControllingInterests"/>
    <link:label xlink:type="resource" xlink:label="label_EquityProfitLossAttributableToNonControllingInterests_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_EquityProfitLossAttributableToNonControllingInterests" xml:lang="fr" id="label_EquityProfitLossAttributableToNonControllingInterests_2">Montant des capitaux propres d’une filiale qui ne sont pas attribuables, directement ou indirectement, à une société mère.  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="EquityProfitLossAttributableToNonControllingInterests" xlink:to="label_EquityProfitLossAttributableToNonControllingInterests_2" xlink:title="label: EquityProfitLossAttributableToNonControllingInterests to label_EquityProfitLossAttributableToNonControllingInterests"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NoncurrentDepositsAndSecurityInterestsReceived" xlink:label="NoncurrentDepositsAndSecurityInterestsReceived" xlink:title="NoncurrentDepositsAndSecurityInterestsReceived"/>
    <link:label xlink:type="resource" xlink:label="label_NoncurrentDepositsAndSecurityInterestsReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NoncurrentDepositsAndSecurityInterestsReceived" xml:lang="fr" id="label_NoncurrentDepositsAndSecurityInterestsReceived">Dépôts et cautionnements reçus</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncurrentDepositsAndSecurityInterestsReceived" xlink:to="label_NoncurrentDepositsAndSecurityInterestsReceived" xlink:title="label: NoncurrentDepositsAndSecurityInterestsReceived to label_NoncurrentDepositsAndSecurityInterestsReceived"/>
    <link:label xlink:type="resource" xlink:label="label_NoncurrentDepositsAndSecurityInterestsReceived_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NoncurrentDepositsAndSecurityInterestsReceived" xml:lang="fr" id="label_NoncurrentDepositsAndSecurityInterestsReceived_2">Autres passifs non courants : montant des passifs non courants que l’entité ne communique pas séparément dans les mêmes états ou notes. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncurrentDepositsAndSecurityInterestsReceived" xlink:to="label_NoncurrentDepositsAndSecurityInterestsReceived_2" xlink:title="label: NoncurrentDepositsAndSecurityInterestsReceived to label_NoncurrentDepositsAndSecurityInterestsReceived"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_CurrentAdvancesFromGroupShareholdersAndPartners" xlink:label="CurrentAdvancesFromGroupShareholdersAndPartners" xlink:title="CurrentAdvancesFromGroupShareholdersAndPartners"/>
    <link:label xlink:type="resource" xlink:label="label_CurrentAdvancesFromGroupShareholdersAndPartners" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CurrentAdvancesFromGroupShareholdersAndPartners" xml:lang="fr" id="label_CurrentAdvancesFromGroupShareholdersAndPartners">dont Avances Groupe et associés </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentAdvancesFromGroupShareholdersAndPartners" xlink:to="label_CurrentAdvancesFromGroupShareholdersAndPartners" xlink:title="label: CurrentAdvancesFromGroupShareholdersAndPartners to label_CurrentAdvancesFromGroupShareholdersAndPartners"/>
    <link:label xlink:type="resource" xlink:label="label_CurrentAdvancesFromGroupShareholdersAndPartners_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_CurrentAdvancesFromGroupShareholdersAndPartners" xml:lang="fr" id="label_CurrentAdvancesFromGroupShareholdersAndPartners_2">Montant des passifs financiers courants que l’entité ne communique pas séparément dans les mêmes états ou notes. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentAdvancesFromGroupShareholdersAndPartners" xlink:to="label_CurrentAdvancesFromGroupShareholdersAndPartners_2" xlink:title="label: CurrentAdvancesFromGroupShareholdersAndPartners to label_CurrentAdvancesFromGroupShareholdersAndPartners"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:label="AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:title="AdjustmentsForNetInterestExpenseOrIncomeAndDividends"/>
    <link:label xlink:type="resource" xlink:label="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xml:lang="fr" id="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends">Élimination des charges (produits) d’intérêts nettes et dividendes </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:to="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:title="label: AdjustmentsForNetInterestExpenseOrIncomeAndDividends to label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends"/>
    <link:label xlink:type="resource" xlink:label="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xml:lang="fr" id="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends_2">Ajustements pour produits financiers nets ou charges financières nettes permettant le rapprochement du résultat et du flux de trésorerie net provenant (utilisé dans le cadre) des activités opérationnelles. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AdjustmentsForNetInterestExpenseOrIncomeAndDividends" xlink:to="label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends_2" xlink:title="label: AdjustmentsForNetInterestExpenseOrIncomeAndDividends to label_AdjustmentsForNetInterestExpenseOrIncomeAndDividends"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:label="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:title="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome"/>
    <link:label xlink:type="resource" xlink:label="label_ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xml:lang="fr" id="label_ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome">Résultat net avant impôt et avant intérêts nets </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:to="label_ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome" xlink:title="label: ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome to label_ProfitLossBeforeTaxAndBeforeNetInterestExpenseOrIncome"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:label="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:title="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts"/>
    <link:label xlink:type="resource" xlink:label="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xml:lang="fr" id="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts">Cession d’actifs immobilisés et remboursement d’avances et acomptes(a)  </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:to="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:title="label: DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts to label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts"/>
    <link:label xlink:type="resource" xlink:label="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xml:lang="fr" id="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts_2">Entrées (sorties) de trésorerie, classées dans les activités d’investissement, que l’entité ne communique pas séparément dans les mêmes états ou notes. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts" xlink:to="label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts_2" xlink:title="label: DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts to label_DisposalOfNoncurrentAssetsAndReimbursementOfAdvancesAndDownPaymentsNetOfTransactionCosts"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_IssuanceOfDebtAndOtherFinancialLiabilities" xlink:label="IssuanceOfDebtAndOtherFinancialLiabilities" xlink:title="IssuanceOfDebtAndOtherFinancialLiabilities"/>
    <link:label xlink:type="resource" xlink:label="label_IssuanceOfDebtAndOtherFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_IssuanceOfDebtAndOtherFinancialLiabilities" xml:lang="fr" id="label_IssuanceOfDebtAndOtherFinancialLiabilities">Émission d’emprunts et autres dettes ﬁnancières </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IssuanceOfDebtAndOtherFinancialLiabilities" xlink:to="label_IssuanceOfDebtAndOtherFinancialLiabilities" xlink:title="label: IssuanceOfDebtAndOtherFinancialLiabilities to label_IssuanceOfDebtAndOtherFinancialLiabilities"/>
    <link:label xlink:type="resource" xlink:label="label_IssuanceOfDebtAndOtherFinancialLiabilities_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_IssuanceOfDebtAndOtherFinancialLiabilities" xml:lang="fr" id="label_IssuanceOfDebtAndOtherFinancialLiabilities_2">Entrées (sorties) de trésorerie, classées dans les activités de financement, que l’entité ne communique pas séparément dans les mêmes états ou notes. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="IssuanceOfDebtAndOtherFinancialLiabilities" xlink:to="label_IssuanceOfDebtAndOtherFinancialLiabilities_2" xlink:title="label: IssuanceOfDebtAndOtherFinancialLiabilities to label_IssuanceOfDebtAndOtherFinancialLiabilities"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:label="RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:title="RepaymentOfBorrowingsAndOtherFinancialLiabilities"/>
    <link:label xlink:type="resource" xlink:label="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities" xml:lang="fr" id="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities">Remboursement d’emprunts et autres dettes ﬁnancières </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:to="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:title="label: RepaymentOfBorrowingsAndOtherFinancialLiabilities to label_RepaymentOfBorrowingsAndOtherFinancialLiabilities"/>
    <link:label xlink:type="resource" xlink:label="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities" xml:lang="fr" id="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities_2">"	 Entrées (sorties) de trésorerie, classées dans les activités de financement, que l’entité ne communique pas séparément dans les mêmes états ou notes." </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="RepaymentOfBorrowingsAndOtherFinancialLiabilities" xlink:to="label_RepaymentOfBorrowingsAndOtherFinancialLiabilities_2" xlink:title="label: RepaymentOfBorrowingsAndOtherFinancialLiabilities to label_RepaymentOfBorrowingsAndOtherFinancialLiabilities"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:label="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:title="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived"/>
    <link:label xlink:type="resource" xlink:label="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xml:lang="fr" id="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived">Variation nette des dépôts et cautionnements </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:to="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:title="label: NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived to label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived"/>
    <link:label xlink:type="resource" xlink:label="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived_2" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:title="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xml:lang="fr" id="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived_2">Autres entrées (sorties) de trésorerie, classées dans les activités de financement : entrées (sorties) de trésorerie, classées dans les activités de financement, que l’entité ne communique pas séparément dans les mêmes états ou notes. </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived" xlink:to="label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived_2" xlink:title="label: NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived to label_NetInflowsOutflowsInSecurityDepositsAndGuaranteesReceived"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_ReservesAndRetainedEarningMember" xlink:label="ReservesAndRetainedEarningMember" xlink:title="ReservesAndRetainedEarningMember"/>
    <link:label xlink:type="resource" xlink:label="label_ReservesAndRetainedEarningMember" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_ReservesAndRetainedEarningMember" xml:lang="fr" id="label_ReservesAndRetainedEarningMember">Réserves et résultats non distribués </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="ReservesAndRetainedEarningMember" xlink:to="label_ReservesAndRetainedEarningMember" xlink:title="label: ReservesAndRetainedEarningMember to label_ReservesAndRetainedEarningMember"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NoncurrentAdvancesFromGroupShareholdersAndPartners" xlink:label="NoncurrentAdvancesFromGroupShareholdersAndPartners" xlink:title="NoncurrentAdvancesFromGroupShareholdersAndPartners"/>
    <link:label xlink:type="resource" xlink:label="label_NoncurrentAdvancesFromGroupShareholdersAndPartners" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NoncurrentAdvancesFromGroupShareholdersAndPartners" xml:lang="fr" id="label_NoncurrentAdvancesFromGroupShareholdersAndPartners">dont Avances Groupe et associés</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NoncurrentAdvancesFromGroupShareholdersAndPartners" xlink:to="label_NoncurrentAdvancesFromGroupShareholdersAndPartners" xlink:title="label: NoncurrentAdvancesFromGroupShareholdersAndPartners to label_NoncurrentAdvancesFromGroupShareholdersAndPartners"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetChargeToProvisionsForCurrentAssets" xlink:label="NetChargeToProvisionsForCurrentAssets" xlink:title="NetChargeToProvisionsForCurrentAssets"/>
    <link:label xlink:type="resource" xlink:label="label_NetChargeToProvisionsForCurrentAssets" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetChargeToProvisionsForCurrentAssets" xml:lang="fr" id="label_NetChargeToProvisionsForCurrentAssets">Dotations nettes aux provisions sur actif circulant </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetChargeToProvisionsForCurrentAssets" xlink:to="label_NetChargeToProvisionsForCurrentAssets" xlink:title="label: NetChargeToProvisionsForCurrentAssets to label_NetChargeToProvisionsForCurrentAssets"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:label="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:title="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements"/>
    <link:label xlink:type="resource" xlink:label="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xml:lang="fr" id="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements">Découverts bancaires</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:to="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:title="label: BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements to label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:label="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_2" xlink:title="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements"/>
    <link:label xlink:type="resource" xlink:label="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_2" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel" xlink:title="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xml:lang="fr" id="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_2">Découverts bancaires  - ouverture</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_2" xlink:to="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_2" xlink:title="label: BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements to label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xlink:label="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_3" xlink:title="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements"/>
    <link:label xlink:type="resource" xlink:label="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_3" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel" xlink:title="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements" xml:lang="fr" id="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_3">Découverts bancaires</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_3" xlink:to="label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements_3" xlink:title="label: BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements to label_BankOverdraftsClassifiedAsCashEquivalentsInCashFlowStatements"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_CurrentContractAssetsOrLiabilitiesEXT" xlink:label="CurrentContractAssetsOrLiabilitiesEXT" xlink:title="CurrentContractAssetsOrLiabilitiesEXT"/>
    <link:label xlink:type="resource" xlink:label="label_CurrentContractAssetsOrLiabilitiesEXT" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CurrentContractAssetsOrLiabilitiesEXT" xml:lang="fr" id="label_CurrentContractAssetsOrLiabilitiesEXT">Actifs ou Passifs sur contrats</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CurrentContractAssetsOrLiabilitiesEXT" xlink:to="label_CurrentContractAssetsOrLiabilitiesEXT" xlink:title="label: CurrentContractAssetsOrLiabilitiesEXT to label_CurrentContractAssetsOrLiabilitiesEXT"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_SignificantEventsAndConsolidationScopeVariationEXT" xlink:label="SignificantEventsAndConsolidationScopeVariationEXT" xlink:title="SignificantEventsAndConsolidationScopeVariationEXT"/>
    <link:label xlink:type="resource" xlink:label="label_SignificantEventsAndConsolidationScopeVariationEXT" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_SignificantEventsAndConsolidationScopeVariationEXT" xml:lang="fr" id="label_SignificantEventsAndConsolidationScopeVariationEXT">Faits significatifs et evolution du perimetre de consolidation   </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="SignificantEventsAndConsolidationScopeVariationEXT" xlink:to="label_SignificantEventsAndConsolidationScopeVariationEXT" xlink:title="label: SignificantEventsAndConsolidationScopeVariationEXT to label_SignificantEventsAndConsolidationScopeVariationEXT"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_LiabilitiesEXT" xlink:label="LiabilitiesEXT" xlink:title="LiabilitiesEXT"/>
    <link:label xlink:type="resource" xlink:label="label_LiabilitiesEXT" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_LiabilitiesEXT" xml:lang="fr" id="label_LiabilitiesEXT">Passifs</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="LiabilitiesEXT" xlink:to="label_LiabilitiesEXT" xlink:title="label: LiabilitiesEXT to label_LiabilitiesEXT"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetFinancialIndebtednessAndSecuritiesEXT" xlink:label="NetFinancialIndebtednessAndSecuritiesEXT" xlink:title="NetFinancialIndebtednessAndSecuritiesEXT"/>
    <link:label xlink:type="resource" xlink:label="label_NetFinancialIndebtednessAndSecuritiesEXT" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetFinancialIndebtednessAndSecuritiesEXT" xml:lang="fr" id="label_NetFinancialIndebtednessAndSecuritiesEXT">Endettement financier net et sûretés   </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetFinancialIndebtednessAndSecuritiesEXT" xlink:to="label_NetFinancialIndebtednessAndSecuritiesEXT" xlink:title="label: NetFinancialIndebtednessAndSecuritiesEXT to label_NetFinancialIndebtednessAndSecuritiesEXT"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_AssetsAndImpairmentTestsEXT" xlink:label="AssetsAndImpairmentTestsEXT" xlink:title="AssetsAndImpairmentTestsEXT"/>
    <link:label xlink:type="resource" xlink:label="label_AssetsAndImpairmentTestsEXT" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_AssetsAndImpairmentTestsEXT" xml:lang="fr" id="label_AssetsAndImpairmentTestsEXT">Actifs et tests de valeur   </link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="AssetsAndImpairmentTestsEXT" xlink:to="label_AssetsAndImpairmentTestsEXT" xlink:title="label: AssetsAndImpairmentTestsEXT to label_AssetsAndImpairmentTestsEXT"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_OperatingWorkingCapitalRequirementEXT" xlink:label="OperatingWorkingCapitalRequirementEXT" xlink:title="OperatingWorkingCapitalRequirementEXT"/>
    <link:label xlink:type="resource" xlink:label="label_OperatingWorkingCapitalRequirementEXT" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OperatingWorkingCapitalRequirementEXT" xml:lang="fr" id="label_OperatingWorkingCapitalRequirementEXT">Besoin en fonds de roulement d’exploitation</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OperatingWorkingCapitalRequirementEXT" xlink:to="label_OperatingWorkingCapitalRequirementEXT" xlink:title="label: OperatingWorkingCapitalRequirementEXT to label_OperatingWorkingCapitalRequirementEXT"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_CustomerRelationship" xlink:label="CustomerRelationship" xlink:title="CustomerRelationship"/>
    <link:label xlink:type="resource" xlink:label="label_CustomerRelationship" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_CustomerRelationship" xml:lang="fr" id="label_CustomerRelationship">Relations Clientèles</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="CustomerRelationship" xlink:to="label_CustomerRelationship" xlink:title="label: CustomerRelationship to label_CustomerRelationship"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xlink:label="OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xlink:title="OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames"/>
    <link:label xlink:type="resource" xlink:label="label_OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xml:lang="fr" id="label_OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames">Autres immobilisations incorporelles</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xlink:to="label_OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames" xlink:title="label: OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames to label_OtherIntangibleAssetsOtherThanCustomerRelationshipGoodwillAndBrandNames"/>
    <link:loc xlink:type="locator" xlink:href="altareit-2022-12-31.xsd#altareit_NetChangeInInvestmentsAndDerivativeFinancialInstruments" xlink:label="NetChangeInInvestmentsAndDerivativeFinancialInstruments" xlink:title="NetChangeInInvestmentsAndDerivativeFinancialInstruments"/>
    <link:label xlink:type="resource" xlink:label="label_NetChangeInInvestmentsAndDerivativeFinancialInstruments" xlink:role="http://www.xbrl.org/2003/role/label" xlink:title="label_NetChangeInInvestmentsAndDerivativeFinancialInstruments" xml:lang="fr" id="label_NetChangeInInvestmentsAndDerivativeFinancialInstruments">Variation nette des placements et des instruments ﬁnanciers dérivés</link:label>
    <link:labelArc xlink:type="arc" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="NetChangeInInvestmentsAndDerivativeFinancialInstruments" xlink:to="label_NetChangeInInvestmentsAndDerivativeFinancialInstruments" xlink:title="label: NetChangeInInvestmentsAndDerivativeFinancialInstruments to label_NetChangeInInvestmentsAndDerivativeFinancialInstruments"/>
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