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    <link:label id="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_84D0D49EE90898F2531354EF0ED1A891_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_84D0D49EE90898F2531354EF0ED1A891" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Proceeds from dispositions of assets and depreciated homes, net</link:label>
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    <link:label id="lab_sui_Issuanceofnotesandotherreceivables_CBEE44FFAF18A86D796A54EF0ED1B38B_documentation_en-US" xlink:label="lab_sui_Issuanceofnotesandotherreceivables_CBEE44FFAF18A86D796A54EF0ED1B38B" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash outflow associated with borrowing supported by a written promise to pay an obligation.</link:label>
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    <link:label id="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_C2D73F2E877F9CC0029554EF0ED150AC_negatedTerseLabel_en-US" xlink:label="lab_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_C2D73F2E877F9CC0029554EF0ED150AC" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel" xlink:type="resource" xml:lang="en-US">Other investing activities</link:label>
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    <link:label id="lab_sui_RepaymentofNotesandOtherReceivables_C70D95920DD7718509D354EF0ED21E8A_documentation_en-US" xlink:label="lab_sui_RepaymentofNotesandOtherReceivables_C70D95920DD7718509D354EF0ED21E8A" xlink:role="http://www.xbrl.org/2003/role/documentation" xlink:type="resource" xml:lang="en-US">The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.</link:label>
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    <link:label id="lab_us-gaap_ProceedsFromLinesOfCredit_94C84BFFBC94711E9E1E54EF0ED3B84F_terseLabel_en-US" xlink:label="lab_us-gaap_ProceedsFromLinesOfCredit_94C84BFFBC94711E9E1E54EF0ED3B84F" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Borrowings on lines of credit</link:label>
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    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C49F51FCE3A9DA3CBBB554EF0ED44500_totalLabel_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C49F51FCE3A9DA3CBBB554EF0ED44500" xlink:role="http://www.xbrl.org/2003/role/totalLabel" xlink:type="resource" xml:lang="en-US">NET CASH PROVIDED BY FINANCING ACTIVITIES</link:label>
    <link:label id="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C49F51FCE3A9DA3CBBB554EF0ED44500_label_en-US" xlink:label="lab_us-gaap_NetCashProvidedByUsedInFinancingActivities_C49F51FCE3A9DA3CBBB554EF0ED44500" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Cash Provided by (Used in) Financing Activities</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_C49F51FCE3A9DA3CBBB554EF0ED44500" xlink:type="locator" />
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    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_0BCA5A760AF7E530C2B254EF0ED499C8_terseLabel_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_0BCA5A760AF7E530C2B254EF0ED499C8" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Effect of exchange rate changes on cash, cash equivalents and restricted cash</link:label>
    <link:label id="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_0BCA5A760AF7E530C2B254EF0ED499C8_label_en-US" xlink:label="lab_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_0BCA5A760AF7E530C2B254EF0ED499C8" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Effect of Exchange Rate on Cash and Cash Equivalents</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents_0BCA5A760AF7E530C2B254EF0ED499C8" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_04B6CE3D42FA9AC7A27054EF0ED4ACC2" xlink:type="locator" />
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    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_693FF88472A7676678DC54EF0ED44B0C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_SupplementalCashFlowInformationAbstract_4D43BD11A8AB4357691354EF0ED5A24E_terseLabel_en-US" xlink:label="lab_us-gaap_SupplementalCashFlowInformationAbstract_4D43BD11A8AB4357691354EF0ED5A24E" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">SUPPLEMENTAL INFORMATION:</link:label>
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    <link:label id="lab_us-gaap_InterestPaidNet_4596CBCE637A5700EF4E54EF0ED5EF8B_terseLabel_en-US" xlink:label="lab_us-gaap_InterestPaidNet_4596CBCE637A5700EF4E54EF0ED5EF8B" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash paid for interest (net of capitalized interest of $1,357 and $1,184 respectively)</link:label>
    <link:label id="lab_us-gaap_InterestPaidNet_4596CBCE637A5700EF4E54EF0ED5EF8B_label_en-US" xlink:label="lab_us-gaap_InterestPaidNet_4596CBCE637A5700EF4E54EF0ED5EF8B" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Interest Paid, Excluding Capitalized Interest, Operating Activities</link:label>
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    <link:label id="lab_us-gaap_DistributionsOnMandatorilyRedeemableSecurities_EE5158E9E8ED5965CEAE54EF0ED58293_terseLabel_en-US" xlink:label="lab_us-gaap_DistributionsOnMandatorilyRedeemableSecurities_EE5158E9E8ED5965CEAE54EF0ED58293" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Cash paid for interest on mandatorily redeemable debt</link:label>
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    <link:label id="lab_us-gaap_NetIncomeLossAbstract_07658A19318FED5CC67DB1787BA0373B_label_en-US" xlink:label="lab_us-gaap_NetIncomeLossAbstract_448481EAE4815F05BBD78EFCBE6937A5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Net Income (Loss) Attributable to Parent [Abstract]</link:label>
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    <link:labelArc order="1" xlink:arcrole="http://www.xbrl.org/2003/arcrole/concept-label" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_CBB828D919B75846B6D8D2BEA9651A7A" xlink:to="lab_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_CBB828D919B75846B6D8D2BEA9651A7A" xlink:type="arc" />
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    <link:label id="lab_us-gaap_CapitalLeasesIncomeStatementInterestExpense_6A41ADDB5E8B0C2C3526405AD75BF7C0_label_en-US" xlink:label="lab_us-gaap_CapitalLeasesIncomeStatementInterestExpense_6A41ADDB5E8B0C2C3526405AD75BF7C0" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Capital Leases, Income Statement, Interest Expense</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasesRentExpenseNet_F10B0D9CC49E2911ABA6405AD75B4E3C_terseLabel_en-US" xlink:label="lab_us-gaap_OperatingLeasesRentExpenseNet_F10B0D9CC49E2911ABA6405AD75B4E3C" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Operating lease expense</link:label>
    <link:label id="lab_us-gaap_OperatingLeasesRentExpenseNet_F10B0D9CC49E2911ABA6405AD75B4E3C_label_en-US" xlink:label="lab_us-gaap_OperatingLeasesRentExpenseNet_F10B0D9CC49E2911ABA6405AD75B4E3C" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Leases, Rent Expense, Net</link:label>
    <link:loc xlink:href="http://xbrl.fasb.org/us-gaap/2018/elts/us-gaap-2018-01-31.xsd#us-gaap_OperatingLeasesRentExpenseNet" xlink:label="loc_us-gaap_OperatingLeasesRentExpenseNet_F10B0D9CC49E2911ABA6405AD75B4E3C" xlink:type="locator" />
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    <link:label id="lab_us-gaap_AdjustmentForAmortization_C17FF654E56D1D62E787405AD75B1618_label_en-US" xlink:label="lab_us-gaap_AdjustmentForAmortization_C17FF654E56D1D62E787405AD75B1618" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Amortization</link:label>
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    <link:label id="lab_us-gaap_OperatingLeasePayments_F95C6E409D0466FD1CD8405AD75CC3B5_label_en-US" xlink:label="lab_us-gaap_OperatingLeasePayments_F95C6E409D0466FD1CD8405AD75CC3B5" xlink:role="http://www.xbrl.org/2003/role/label" xlink:type="resource" xml:lang="en-US">Operating Lease, Payments</link:label>
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    <link:label id="lab_us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_43ACB45772748C1E6BF8405AD75C4612_terseLabel_en-US" xlink:label="lab_us-gaap_RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability_43ACB45772748C1E6BF8405AD75C4612" xlink:role="http://www.xbrl.org/2003/role/terseLabel" xlink:type="resource" xml:lang="en-US">Right of use asset obtained (land) in exchange for new finance lease liabilities</link:label>
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