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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Preferred Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock dividends declared and paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Preferred stock dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Less: preferred stock dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStock_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RestrictedCashandInvestmentsRestrictedCashandCashHeldinEscrowCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Restricted Cash and Investments, Restricted Cash and Cash Held in Escrow, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RestrictedCashandInvestmentsRestrictedCashandCashHeldinEscrowCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Cash and Investments, Restricted Cash and Cash Held in Escrow, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RestrictedCashandInvestmentsRestrictedCashandCashHeldinEscrowCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted cash and cash held in escrow</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AboveMarketAndBelowMarketLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Above Market And Below Market Leases [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AboveMarketAndBelowMarketLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Above Market And Below Market Leases [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AboveMarketAndBelowMarketLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Above-Market and Below-Market In-Place Lease Intangibles</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AboveMarketAndBelowMarketLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Above-Market and Below-Market In-Place Lease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Preferred Stock, Shares Issued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depositary shares outstanding (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Preferred stock, issued (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AK_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Alaska</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AK_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ALASKA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow, Noncash Investing and Financing Activities Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowNoncashInvestingAndFinancingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental disclosure of noncash investing and financing activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDebtInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Long-term Debt Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2051Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due April 2051 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2051Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due April 2051 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2051Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">April 2051</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NetInvestmentInDirectFinancingLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Net Investment in Direct Financing Leases [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NetInvestmentInDirectFinancingLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Investment in Direct Financing Leases [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NetInvestmentInDirectFinancingLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Investment in Direct Financing Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_UT_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Utah</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_UT_lbl" xlink:role="http://www.xbrl.org/2003/role/label">UTAH</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpensesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating expenses:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Net of Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total deferred tax assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total allowable shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common stock, shares authorized (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_KY_lbl" xlink:role="http://www.xbrl.org/2003/role/label">KENTUCKY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MASSACHUSETTS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NE_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEBRASKA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Stated Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateStatedPercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stated Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncrementalCommonSharesAttributableToDilutiveEffectOther_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incremental Common Shares Attributable To Dilutive Effect, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncrementalCommonSharesAttributableToDilutiveEffectOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Common Shares Attributable To Dilutive Effect, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncrementalCommonSharesAttributableToDilutiveEffectOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other dilutive securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Common Stock, Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Common stock dividends declared and paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash and Cash Equivalents, at Carrying Value, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash and Cash Equivalents, at Carrying Value, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and Cash Equivalents, at Carrying Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding Reconciliation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingDilutedDisclosureItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic and Diluted Weighted Average Shares Outstanding:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Maturities of Long-Term Debt [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfMaturitiesOfLongTermDebtTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Maturities of Long-term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Subject to or Available for Operating Lease [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Distributions to noncontrolling interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationBeginningYearAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Acquired of Beginning Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationBeginningYearAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate and Accumulated Depreciation Beginning Year Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationBeginningYearAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate and accumulated depreciation beginning year acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule III - Real Estate and Accumulated Depreciation and Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementStrategyAndGovernanceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management, Strategy, and Governance [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Common Stock, Shares, Issued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares issued (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total shares issued as of December 31, 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInterestRateDerivativesTerminated_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of interest rate derivatives terminated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInterestRateDerivativesTerminated_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Interest Rate Derivatives Terminated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInterestRateDerivativesTerminated_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of interest rate derivative instruments terminated by the entity during the period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInterestRateDerivativesTerminated_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Description</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleReportToBoardFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_TX_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Texas</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_TX_lbl" xlink:role="http://www.xbrl.org/2003/role/label">TEXAS</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NJ_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEW JERSEY</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DirectFinancingLeaseLeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Direct Financing Lease, Lease Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DirectFinancingLeaseLeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earned income from direct financing leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Right-of-Use Asset Obtained in Exchange for Operating Lease Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Right-of-use assets recorded in connection with lease liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI for Write-down of Securities, Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForWritedownOfSecuritiesNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation adjustments &#8211; available-for-sale securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Receivables, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInReceivables_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Decrease (increase) in receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePriceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Exercise Price Abstract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePriceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Exercise Price [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePriceAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Share&#160;Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfTotalAnnualBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income Recognized On Cash Basis Percentage Of Total Annual Base Rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfTotalAnnualBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income Recognized On Cash Basis Percentage Of Total Annual Base Rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfTotalAnnualBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total annual base rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Deferred In Other Comprehensive Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow Hedges Derivative Instruments at Fair Value, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash Flow Hedges Derivative Instruments at Fair Value, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Estimated Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities and equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Tangible Asset [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_PA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PENNSYLVANIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentBuildingAndBuildingImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Investment Building and Building Improvements, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentBuildingAndBuildingImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Building and Building Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentBuildingAndBuildingImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Buildings and improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation Allowance Decreased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskThirdPartyOversightAndIdentificationProcessesFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair Value of Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure relating to common and preferred dividends including schedule of characterization for tax purposes, dividends declared and paid and any other information related to dividends.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Remaining Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average amortization period (years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Valuation allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Valuation Allowance, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Extinguishment of Debt, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ExtinguishmentOfDebtAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes payable redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AL_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Alabama</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AL_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ALABAMA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial Cost to Company, Land</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfLand_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Land</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementThirdPartyEngagedFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Third Party Engaged [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentsIncorporatedByReferenceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Documents Incorporated by Reference [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentsIncorporatedByReferenceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Documents Incorporated by Reference</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_HI_lbl" xlink:role="http://www.xbrl.org/2003/role/label">HAWAII</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SegmentGeographicalDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsRestrictedCashAndCashEquivalentsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted Cash and Cash Held in Escrow</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employer matching contribution, percent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Significant Change in Unrecognized Tax Benefits is Reasonably Possible, Amount of Unrecorded Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Significant change in unrecognized tax benefits is reasonably possible, amount of unrecorded benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Issuance Costs, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt costs, net of accumulated amortization of $29,930 and $27,002, respectively</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NV_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEVADA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Loan Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfRealEstateInvestmentPortfolioRemainingFundingCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule Of Real Estate Investment Portfolio Remaining Funding Commitments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfRealEstateInvestmentPortfolioRemainingFundingCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Real Estate Investment Portfolio Remaining Funding Commitments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfRealEstateInvestmentPortfolioRemainingFundingCommitmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining Funding Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Dividend Reinvestment Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock dividends declared and paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseTermOfContract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor, Lease, Term Of Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseTermOfContract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Lease, Term Of Contract</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseTermOfContract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial lease terms</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes Payable [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireRealEstateHeldForInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment for Acquisition, Real Estate, Held-for-Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireRealEstateHeldForInvestment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Additions to real estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermNotesPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable, Noncurrent [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermNotesPayableAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes Payable, Noncurrent [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MN_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MINNESOTA</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Operating Assets and Liabilities, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConcentrationRiskDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Concentration Risk Disclosure [Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retirement Benefits [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PensionAndOtherPostretirementBenefitsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee Benefit Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInvestmentPropertiesLeasedUnderOperatingLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Total number of Investment Properties leased under operating leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInvestmentPropertiesLeasedUnderOperatingLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Investment Properties Leased Under Operating Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInvestmentPropertiesLeasedUnderOperatingLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2050Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due April 2050</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2050Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due April 2050 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2050Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2050 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow Hedge Derivative Instrument Liabilities at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgeDerivativeInstrumentLiabilitiesAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability Fair Value When Terminated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock options outstanding (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Intrinsic Value, Amount Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodIntrinsicValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value share price (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgesDerivativeInstrumentsAtFairValueNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow Hedges Derivative Instruments at Fair Value, Net [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt, Policy [Policy Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfSecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Secured Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfSecuredDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayment of mortgages payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revolving Credit Facility [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevolvingCreditFacilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Credit Facility</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PeriodForImprovementsToConstructionCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Period for improvements to construction commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PeriodForImprovementsToConstructionCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Period For Improvements To Construction Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PeriodForImprovementsToConstructionCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Period For Improvements To Construction Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Operating Lease, Lease Income, Total</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rental income from operating leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net earnings to net cash provided by operating activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateOfRecordDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date of Record</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of notes payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSaleOfStockBySubsidiaryOrEquityMethodInvesteeDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Sale of Stock by Subsidiary or Equity Method Investee Disclosure [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSaleOfStockBySubsidiaryOrEquityMethodInvesteeDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Common Stock Issuances Pursuant to Equity Programs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2022Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2022 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2022Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due October 2022 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2022Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due October 2022 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_GA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">GEORGIA</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of debt issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments for New Accounting Pronouncements [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2052Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2052 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2052Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due April 2052 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2052Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due April 2052 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_CO_lbl" xlink:role="http://www.xbrl.org/2003/role/label">COLORADO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Retained Earnings (Accumulated Deficit), Ending Balance</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2027Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due October 2027 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2027Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027 Notes</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Well-known Seasoned Issuer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityWellKnownSeasonedIssuer_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Well-known Seasoned Issuer</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOperatingLeaseMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Subject to Operating Lease [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CapitalGainMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capital gain [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CapitalGainMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capital gain [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CapitalGainMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance Incentive Plan</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedAmortizationDeferredFinanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Amortization, Debt Issuance Costs</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedAmortizationDeferredFinanceCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Debt costs, accumulated amortization</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DevelopmentInProcessAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Development In Process, Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DevelopmentInProcessAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Development In Process, Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DevelopmentInProcessAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investments in work in progress - improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivableMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sales-Type and Direct Financing Leases, Payment to be Received, Maturity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivableMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undiscounted Cash Flows to be Received on Direct Financing Leases Held for Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PropertySubjectToDirectFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Property Subject To Direct Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PropertySubjectToDirectFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Subject To Direct Financing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PropertySubjectToDirectFinancingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Direct financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Payable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansPayableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateOwnedValuationAllowanceProvision1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Impairment losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateOwnedValuationAllowanceProvision1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Owned, Valuation Allowance, Provision</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Impairment losses - real estate, net of recoveries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impairment of Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairmentOfRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate impairments, net of recoveries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CommonStockDividendsPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Common Stock, Dividends Paid [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CommonStockDividendsPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Dividends Paid [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CommonStockDividendsPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock, Dividends Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DelayedDrawTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Delayed Draw Term Loan (DDTL) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DelayedDrawTermLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ChiefExecutiveOfficerMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Chief Executive Officer [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalizedCostsAssetRetirementCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Oil and Gas, Capitalized Cost, before Accumulated Depreciation, Depletion, Amortization, and Valuation Allowance, Asset Retirement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CapitalizedCostsAssetRetirementCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Incremental executive retirement costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerSharePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIABILITIES AND EQUITY</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Operating Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by operating activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NC_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NORTH CAROLINA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueRecognitionLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueRecognitionLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue Recognition, Leases [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Common Stock, $0.01 par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskRoleOfManagementTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Role of Management [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining mortgages payable principal balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Maturity, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentDueCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred rent to be repaid during year ended December 31, 2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentDueCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Due Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentDueCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Due Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanOfReorganizationDatePlansExpectedToBeEffective_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Plan of Reorganization, Date Plan Expected to be Effective</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PlanOfReorganizationDatePlansExpectedToBeEffective_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Discount (Premium)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of notes payable discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages payable, including unamortized premium and net of unamortized debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Mortgages payable, including unamortized premium and net of unamortized debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EscrowDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Escrow Deposit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EscrowDeposit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Escrow and other restricted accounts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Effective Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Effective Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Liabilities, Gross, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxLiabilities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total deferred tax liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AccumulatedOtherComprehensiveIncomeLossPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AccumulatedOtherComprehensiveIncomeLossPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss) [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AccumulatedOtherComprehensiveIncomeLossPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accumulated Other Comprehensive Income (Loss).</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic and Diluted Earnings:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net earnings per share:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2023Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due April 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2023Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due April 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2023Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfInvestmentPropertiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of number of Investment Property Holdings and gross leasable area and number of states located</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfInvestmentPropertiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Investment Properties [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfInvestmentPropertiesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of NNN's Investment Portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental disclosure of cash flow information:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncreaseDecreaseInAccruedRentalIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) In Accrued Rental Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncreaseDecreaseInAccruedRentalIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase (Decrease) In Accrued Rental Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncreaseDecreaseInAccruedRentalIncome_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Increase in accrued rental income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate portfolio, net of accumulated depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Property, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accounted for using the operating method, net of accumulated depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentPropertyAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real Estate Investment Property, Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentPropertyAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Property, Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentPropertyAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate acquisitions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Depreciation Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SECScheduleIIIRealEstateAccumulatedDepreciationDepreciationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation and amortization expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskProcessForInformingBoardCommitteeOrSubcommitteeResponsibleForOversightTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfPropertiesSecuringMortgagesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number Of Properties Securing Mortgages Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfPropertiesSecuringMortgagesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Properties Securing Mortgages Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfPropertiesSecuringMortgagesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of encumbered assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net increase (decrease) in cash, cash equivalents and restricted cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Income, Operating, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest and other income from real estate transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandAndLandImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Land and Land Improvements, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandAndLandImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Land and Land Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandAndLandImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land and improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Short-Term Debt [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShortTermDebtTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Par or Stated Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, par value (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Type of Adoption [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SummaryOfTenantsClassifiedAsCashBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of tenants classified as cash basis.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SummaryOfTenantsClassifiedAsCashBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary Of Tenants Classified As Cash Basis [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SummaryOfTenantsClassifiedAsCashBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of tenants classified as cash basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Other Operating Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Operating Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Increase (decrease) in other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockRedemptionPriceIncludingAccruedDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Preferred Stock Redemption Price Including Accrued Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockRedemptionPriceIncludingAccruedDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Redemption Price Including Accrued Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockRedemptionPriceIncludingAccruedDividends_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate redemption price (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WV_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">West Virginia</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WV_lbl" xlink:role="http://www.xbrl.org/2003/role/label">WEST VIRGINIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Stockholders' Equity of NNN</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFinStmtErrorCorrectionFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Financial Statement Error Correction [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageRemainingLeaseTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted Average Remaining Lease Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageRemainingLeaseTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Remaining Lease Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageRemainingLeaseTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average remaining lease term (years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageRemainingLeaseTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average remaining lease term (years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDeferredHedgeGains_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Deferred Hedge Gains</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfDeferredHedgeGains_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of interest rate hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Payable [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgram2018Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ATM Equity Program 2018</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgram2018Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ATM Equity Program 2018 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgram2018Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2018 ATM Equity Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase in ROU asset and operating lease liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Operating Capital, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Derivative Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Derivative Instruments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_FairValueOfForwardStartingSwap_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair value of forward starting swap</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_FairValueOfForwardStartingSwap_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of forward starting swap</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_FairValueOfForwardStartingSwap_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of forward starting swap</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_FairValueOfForwardStartingSwap_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Fair value of forward starting swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReconciliationOfCarryingAmountOfRealEstateInvestmentsRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land, buildings, and leasehold interests:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesFPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series F Preferred Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesFPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depositary Shares, each representing one-hundredth of a share of 5.200% Series F Preferred Stock, $0.01 par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesFPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">5.200% Series F, 138,000 shares issued and outstanding, at stated liquidation value of $2,500 per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesFPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Series F Preferred Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Long-term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_OH_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OHIO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTaxAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_MortgageLoansOnRealEstateOther_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other: credit (losses) recoveries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_MortgageLoansOnRealEstateOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans On Real Estate Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_MortgageLoansOnRealEstateOther_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage loans on real estate other.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_CA_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">California</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_CA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CALIFORNIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Non-vested restricted shares, December 31 (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Non-vested restricted shares, January 1 (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Remaining Borrowing Capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit facility available for future borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Debt issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Preferred Stock, Shares Outstanding, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Preferred Stock, Shares Outstanding, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, outstanding (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_OR_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OREGON</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risks and Uncertainties [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RisksAndUncertaintiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risks and Uncertainties [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geographical [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_StatementGeographicalAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geographical [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfDisposedPropertiesContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number Of Disposed Properties, Continuing Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfDisposedPropertiesContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Disposed Properties Continuing Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfDisposedPropertiesContinuingOperations_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of properties sold at a gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockRedemptionPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Redemption Premium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockRedemptionPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Excess of redemption value over carrying value of preferred shares redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockRedemptionPremium_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Excess of redemption value over carrying value of preferred shares redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockRedemptionPremium_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Excess of redemption value over carrying value of preferred shares redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Below Market Lease, Net, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Below Market Lease, Net, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Below Market Lease, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Below-market in-place leases, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Costs Capitalized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestCostsCapitalized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest costs capitalized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_LA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">LOUISIANA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeasePercentOfRentCollectedForPreviousQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor Lease, Percent Of Rent Collected For Previous Quarter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeasePercentOfRentCollectedForPreviousQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Lease, Percent Of Rent Collected For Previous Quarter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeasePercentOfRentCollectedForPreviousQuarter_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percent of rent collected for previous quarter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceSharesSubjectToShareholderReturnMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Performance Shares, Subject To Shareholder Return [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceSharesSubjectToShareholderReturnMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performance Shares, Subject To Shareholder Return [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceSharesSubjectToShareholderReturnMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance shares, subject to shareholder return</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassifications from accumulated other comprehensive income to net earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncrementalRestrictedSharesAttributableToContingentlyIssuableShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Incremental Restricted Shares Attributable To Contingently Issuable Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncrementalRestrictedSharesAttributableToContingentlyIssuableShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Incremental Restricted Shares Attributable To Contingently Issuable Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_IncrementalRestrictedSharesAttributableToContingentlyIssuableShares_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Unvested contingent restricted shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Unamortized Discount (Premium) and Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Unamortized Discount (Premium) and Debt Issuance Costs, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unsecured Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Unsecured Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnsecuredDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured delayed draw term loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Dividends, Per Share, Cash Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock dividends declared and paid (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WA_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Washington</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">WASHINGTON</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MD_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MARYLAND</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Instrument, Unamortized Discount, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Unamortized Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Discount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOCI Attributable to Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DirectorsFeesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Directors' fees [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DirectorsFeesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Directors' fees [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DirectorsFeesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Directors&#8217; fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, after Year Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsCharacterizationForTaxPurposeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">[Domain] for Dividends Characterization for Tax Purpose [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsCharacterizationForTaxPurposeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Characterization for Tax Purpose [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsCharacterizationForTaxPurposeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends Characterization for Tax Purpose [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInStockholdersEquityRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase (Decrease) in Stockholders' Equity [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorLeaseDescriptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Lease, Description [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorLeaseDescriptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, Lease, Description [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfComputationOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Represents the calculation of the numerator and denominator used in basic and diluted earnings per share calculation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfComputationOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Computation Of Earnings Per Share Basic And Diluted [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfComputationOfEarningsPerShareBasicAndDilutedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Computation of Basic and Diluted Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Preferred Stock, Value, Issued, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Preferred Stock, Value, Issued, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Preferred Stock, Value, Issued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, $0.01 par value. Authorized 15,000,000 shares; 5.200% Series F, 138,000 shares issued and outstanding, at December 31, 2020, at stated liquidation value of $2,500 per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtExtinguishmentCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment for Debt Extinguishment or Debt Prepayment Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtExtinguishmentCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Payment of make-whole premium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDebtExtinguishmentCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Payment for early extinguishment of debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Loan Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentMaturityDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Maturity Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average grant price (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Amortization of Intangible Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization expense, in-place leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLongTermLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Long-Term Lines of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromLongTermLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from line of credit payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfShareSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Share Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfShareSold_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Share Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfShareSold_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Share Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Segment Reporting [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Dividends Per Share, Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock dividends declared and paid (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">AOCI, cash flow hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedGainLossNetCashFlowHedgeParentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain or Loss on Cash Flow Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DevelopmentInProcess_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Development in Process</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DevelopmentInProcess_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Work in progress &#8211; improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAccumulatedDepreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Depreciation and Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received, Maturity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedMaturityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Undiscounted Cash Flows to be Received on Noncancellable Operating Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceIncentivePlanExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The aggregate amount of noncash, equity-based and long-term incentive based employee remuneration. This may include the value of stock options, amortization of restricted stock, amortization of long term incentive compensation and adjustment for officers compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceIncentivePlanExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performance Incentive Plan Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceIncentivePlanExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance incentive plan expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real Estate Investment, Funding Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment, Funding Commitments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net operating loss carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible lease liabilities (included in other liabilities):</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Subject to or Available for Operating Lease [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Subject to or Available for Operating Lease [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and contingencies (Note 13)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_ME_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MAINE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInvestmentPropertiesLeasedUnderDirectFinancingLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Investment Properties leased under the direct financing method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInvestmentPropertiesLeasedUnderDirectFinancingLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Investment Properties Leased Under Direct Financing Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfInvestmentPropertiesLeasedUnderDirectFinancingLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Direct financing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetUnderConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset under Construction [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetUnderConstructionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset under construction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts Receivable, Credit Loss Expense (Reversal)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForDoubtfulAccounts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Write-off of outstanding receivables and related accrued rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorFirmId_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Auditor Firm ID</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LongtermDebtMaturitiesRepaymentsOfPrincipalInYearsOneThroughFive_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Long-term Debt, Maturities, Repayments Of Principal In Years One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LongtermDebtMaturitiesRepaymentsOfPrincipalInYearsOneThroughFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-term Debt, Maturities, Repayments Of Principal In Years One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LongtermDebtMaturitiesRepaymentsOfPrincipalInYearsOneThroughFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term debt maturities for the next five years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis spread on variable rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Basis Spread on Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Dividend Rate, Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockDividendRatePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Dividend rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgeDerivativeInstrumentAssetsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Asset Fair Value When Terminated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgeDerivativeInstrumentAssetsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Fair Value When Terminated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashFlowHedgeDerivativeInstrumentAssetsAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Flow Hedge Derivative Instrument Assets at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Doubtful Accounts, Premiums and Other Receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForDoubtfulAccountsPremiumsAndOtherReceivables_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance on receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net earnings attributable to stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeAnnualizedOnBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income Annualized On Base Rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeAnnualizedOnBaseRent_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income Annualized On Base Rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Below Market Lease, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Below-market in-place leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAcquiredInPlaceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leases, Acquired-in-Place [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAcquiredInPlaceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">In-place leases, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAcquiredInPlaceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">In-Place Lease Intangibles</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DirectFinancingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net investment in direct financing leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DirectFinancingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Direct Financing Lease, Net Investment in Lease, before Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DirectFinancingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounted for using the direct financing method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DirectFinancingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net investment in direct financing leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate Portfolio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Positions or Committees Responsible [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average number of shares outstanding used in basic earnings per share (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted average shares outstanding used in basic earnings per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Below Market Lease, Accumulated Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BelowMarketLeaseAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: accumulated amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2033Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2033 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2033Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due October 2033[Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2033Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due October 2033[Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityOther_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stockholders' Equity, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityOther_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_IA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IOWA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Tangible Asset [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgram2020Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ATM Equity Program 2020</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgram2020Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ATM Equity Program 2020 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgram2020Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2020 ATM Equity Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued interest payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateByLoanDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateByLoanDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SCHEDULE IV - MORTGAGE LOANS ON REAL ESTATE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskProcessForInformingManagementOrCommitteesResponsibleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Dispositions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAccumulatedDepreciationRealEstateSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation, Investment in Real Estate Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Mortgages payable, including unamortized premium and net of unamortized debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Term Loan Drew Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="country_PR_lbl" xlink:role="http://www.xbrl.org/2003/role/label">PUERTO RICO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_IN_lbl" xlink:role="http://www.xbrl.org/2003/role/label">INDIANA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Valuation allowance (increase) decrease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Stockholders' Equity Attributable to Parent, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Stockholders' Equity Attributable to Parent, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Par or Stated Value Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockParOrStatedValuePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, par value (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Stockholders' Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement of Stockholders' Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AR_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Arkansas</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AR_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ARKANSAS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SECScheduleIIIRealEstateNumberOfUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_SECScheduleIIIRealEstateNumberOfUnits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Number of Units</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Use of Estimates, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UseOfEstimates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Use of Estimates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossFinancialInstrumentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Credit Losses on Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditLossFinancialInstrumentPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Loss, Financial Instrument [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Effective Income Tax Rate Reconciliation, Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Income Tax Rate Reconciliation, Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss carryforwards increase (decrease)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Financing Receivable, Allowance for Credit Loss, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Financing Receivable, Allowance for Credit Loss, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for credit loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableDateDeclaredDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disclosure of Share-Based Compensation Arrangements by Share-Based Payment Award [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfShareBasedCompensationArrangementsByShareBasedPaymentAwardTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Common Stock Issuances Pursuant to DRIP</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncontrollingInterestMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noncontrolling Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfOtherShareBasedCompensationActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Other Grants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Asset, Acquired, Finite-Lived [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AcquiredFiniteLivedIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquired Finite-Lived Intangible Assets [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes Payable and Derivatives [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Other Operating Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Operating Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Decrease (increase) in other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Operating and Nonoperating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Common Stock, Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Common stock dividends declared and paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskMateriallyAffectedOrReasonablyLikelyToMateriallyAffectRegistrantTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ATM equity program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementExpertiseOfManagementResponsibleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Expertise of Management Responsible [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NontaxableDistributionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Nontaxable distributions [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NontaxableDistributionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nontaxable distributions [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NontaxableDistributionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nontaxable distributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromCollectionOfNotesReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Collection of Notes Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromCollectionOfNotesReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal payments received on mortgages and notes receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DetailsOfImpairmentOfLongLivedAssetsHeldAndUsedByAssetTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate Impairments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DetailsOfImpairmentOfLongLivedAssetsHeldAndUsedByAssetTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Details of Impairment of Long-Lived Assets Held and Used by Asset [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAverageOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Average Outstanding Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityAverageOutstandingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Revolving credit facility weighted average outstanding balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Effective Income Tax Rate Reconciliation, Other Adjustments, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxReconciliationOtherAdjustments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Built-in gain tax liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDueCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rent deferral, year ending December 31, 2020</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDueCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Originally Due Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDueCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Originally Due Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupsIncludingDiscontinuedOperationsNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Groups, Including Discontinued Operations, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_MortgageAgreementThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage Agreement Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_MortgageAgreementThreeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Agreement Three [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AreaOfRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Area of Real Estate Property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AreaOfRealEstateProperty_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross leasable area (square feet) (unaudited)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfInterestRateDerivativesHeld_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Interest Rate Derivatives Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfInterestRateDerivativesHeld_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of Interest Rate Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditFacilityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Facility [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseTransactionCost_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease, Transaction Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseTransactionCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Transaction Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseTransactionCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasing transaction costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtWeightedAverageInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtWeightedAverageInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt, Weighted Average Interest Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateFederalIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Federal Income Tax Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateFederalIncomeTaxBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate, federal income tax basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_InvestmentPropertiesTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Investment Properties Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_InvestmentPropertiesTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Properties Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_InvestmentPropertiesTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DisclosureOfLongLivedAssetsHeldForSaleGainsRecognizedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of Long Lived Assets Held-for-sale, Gains Recognized [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DisclosureOfLongLivedAssetsHeldForSaleGainsRecognizedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disclosure of Long Lived Assets Held-for-sale, Gains Recognized [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DisclosureOfLongLivedAssetsHeldForSaleGainsRecognizedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gains on Dispositions of Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate portfolio:</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Continuing Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Cash, cash equivalents and restricted cash at end of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Cash, cash equivalents and restricted cash at beginning of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest paid, net of amount capitalized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllocatedShareBasedCompensationExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based compensation cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DripMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">DRIP [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DripMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">DRIP [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DripMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">DRIP</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateHeldForSalePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate - Held for Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateHeldForSalePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Held for Sale Policy Text Block</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateHeldForSalePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real Estate Held for Sale Policy Text Block</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Face Amount of Mortgages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateFaceAmountOfMortgages_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Face Amount of Mortgages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title and Position [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Life on Which Depreciation &amp; Amortization in Latest Income Statement is Computed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationLifeUsedForDepreciation1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Life Used for Depreciation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_IcfrAuditorAttestationFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ICFR Auditor Attestation Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_IcfrAuditorAttestationFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ICFR Auditor Attestation Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued rental</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Rent Receivables, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredRentReceivablesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accrued rental income, net of allowance of $3,393 and $4,156, respectively</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRedeemedOrCalledDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Redeemed or Called During Period, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRedeemedOrCalledDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Redemption of depositary shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermPurchaseCommitmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Purchase Commitment [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeAccruedDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rental income accrued during period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeAccruedDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income, Accrued During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeAccruedDuringPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income, Accrued During Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceSharesSubjectToCoreFundsFromOperationsGrowthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Performance Shares, Subject To Core Funds From Operations Growth [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceSharesSubjectToCoreFundsFromOperationsGrowthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performance Shares, Subject To Core Funds From Operations Growth [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceSharesSubjectToCoreFundsFromOperationsGrowthMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance shares, subject to Core Funds From Operations growth</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2030Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due April 2030 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2030Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due April 2030 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueApril2030Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongTermDebtTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_TN_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Tennessee</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_TN_lbl" xlink:role="http://www.xbrl.org/2003/role/label">TENNESSEE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementClassOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_VA_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Virginia</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_VA_lbl" xlink:role="http://www.xbrl.org/2003/role/label">VIRGINIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_VA_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2 properties in VA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueJune2034Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due June 2034 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueJune2034Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">NotesPayableDueJune2034</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueJune2034Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2034 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementStrategyAndGovernanceLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management, Strategy, and Governance [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TenantImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Tenant Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TenantImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leasehold interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SECSchedule1229RealEstateCompaniesInvestmentinMovementinMortgageLoansonRealEstatePeriodDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate, Period Decrease [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SECSchedule1229RealEstateCompaniesInvestmentinMovementinMortgageLoansonRealEstatePeriodDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate, Period Decrease [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SECSchedule1229RealEstateCompaniesInvestmentinMovementinMortgageLoansonRealEstatePeriodDecreaseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deductions during the year:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueFebruary2031Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due February 2031 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueFebruary2031Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due February 2031 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueFebruary2031Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2031 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfTotalProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income Recognized On Cash Basis, Percentage Of Total Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfTotalProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income Recognized On Cash Basis, Percentage Of Total Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfTotalProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of total properties for which revenue recognized on cash basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfTotalProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Groups, Including Discontinued Operations [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantsinPeriodAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantsinPeriodAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantsinPeriodAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other share grants under the 2017 Plan:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Restricted Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RestrictedStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Principal Amount of Delinquent Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstatePrincipalAmountOfDelinquentLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal Amount of Loans Subject to Delinquent Principal or Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NY_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEW YORK</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Variable Rate [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Finite-Lived Intangible Assets, Gross, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_IL_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ILLINOIS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AmortizationofMortgagesPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amortization of Mortgages Premium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AmortizationofMortgagesPremium_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Mortgages Premium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AmortizationofMortgagesPremium_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Amortization of mortgages payable premium</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceIncentivePlanPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Performance Incentive Plan Payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceIncentivePlanPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performance Incentive Plan Payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PerformanceIncentivePlanPayment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Performance incentive plan payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted average shares outstanding used in diluted earnings per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Costs Capitalized Subsequent to Acquisition, Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Improvements, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Act File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividendsCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Ordinary Dividends, Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividendsCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividendsCommonStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of common stock dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EquityPlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity Plan Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EquityPlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Plan Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EquityPlanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Plan Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cover page.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ImpairmentLossesAndOtherCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Impairment Losses and Other Charges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ImpairmentLossesAndOtherCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impairment Losses and Other Charges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ImpairmentLossesAndOtherCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment losses &#8211; real estate, net of recoveries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Restricted shares forfeited (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableLeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage rent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableLeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Lease, Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateCompaniesDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Companies Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateCompaniesDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lease classification:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CarryingValueOfPropertiesSecuringMortgagesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Carrying Value of Properties Securing Mortgages Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CarryingValueOfPropertiesSecuringMortgagesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Carrying Value of Properties Securing Mortgages Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CarryingValueOfPropertiesSecuringMortgagesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying Value of Encumbered Asset(s)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgagesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgages [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgagesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares authorized (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Operating Segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfOperatingSegments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of operating segments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Segment Reporting Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SegmentReportingDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Segment Information</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">General and Administrative Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">General and administrative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAcquiredFiniteLivedIntangibleAssetByMajorClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Acquired Finite-Lived Intangible Asset by Major Class [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Rate Cash Flow Hedge Gain (Loss) to be Reclassified During Next 12 Months, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WI_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Wisconsin</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WI_lbl" xlink:role="http://www.xbrl.org/2003/role/label">WISCONSIN</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofInvestmentPropertyLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Investment Property Leases [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofInvestmentPropertyLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Investment Property Leases [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofInvestmentPropertyLeasesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Classification of Investment Property Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entities [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitiesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entities [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - ATM equity program (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateCollectionsOfPrincipal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Collections of Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateCollectionsOfPrincipal_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Collections of principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Finite-Lived Intangible Assets, Net, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Finite-Lived Intangible Assets, Net, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Leases, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SupplementalChangeInOtherComprehensiveIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Supplemental change in other comprehensive income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SupplementalChangeInOtherComprehensiveIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Change In Other Comprehensive Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SupplementalChangeInOtherComprehensiveIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in other comprehensive income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Costs Capitalized Subsequent to Acquisition, Carrying Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCostsCapitalizedSubsequentToAcquisitionCarryingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Cost Capitalized Subsequent to Acquisition, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfImpairedRealEstatePropertiesVacant_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vacant</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfImpairedRealEstatePropertiesVacant_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Impaired Real Estate Properties, Vacant</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NumberOfImpairedRealEstatePropertiesVacant_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number Of Impaired Real Estate Properties, Vacant</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Initial Cost to Company, Building, Improvements &amp; Leasehold Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationInitialCostOfBuildingsAndImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Initial Cost of Building and Improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorLeasesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Leases [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorLeasesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue Recognition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorLeasesPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Lease Accounting</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RohdeIslandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Rohde Island</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RohdeIslandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Rohde Island [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RohdeIslandMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Rohde Island.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Useful Life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property estimated useful life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New Accounting Pronouncements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Restricted Stock and Restricted Stock Unit, Activity [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSharebasedCompensationRestrictedStockAndRestrictedStockUnitsActivityTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Restricted Stock Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationByPropertyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationByPropertyTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, by Property [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vesting period (in years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redemption price percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_SD_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SOUTH DAKOTA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_SD_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">South Dakota</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateOtherAcquisitions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisitions and dollars invested in projects under construction and tenant improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateOtherAcquisitions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Other Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax penalties and interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Common Stock, Shares, Outstanding, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Common Stock, Shares, Outstanding, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares outstanding (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Depreciation, Depletion and Amortization, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Depletion and Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationDepletionAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Processes Integrated [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsLiabilitiesNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net deferred tax asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AtmEquityProgram2023Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023 ATM Equity Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AtmEquityProgram2023Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ATM Equity Program 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AtmEquityProgram2023Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ATM Equity Program 2023 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingExpenses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total operating expenses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total comprehensive income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateScheduleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateScheduleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate Schedule [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement of Cash Flows [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableNetPriceAtIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableNetPriceAtIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate purchase price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableNetPriceAtIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Net Price At Issuance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableNetPriceAtIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Net Price At Issuance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableNetPriceAtIssuance_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WY_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Wyoming</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_WY_lbl" xlink:role="http://www.xbrl.org/2003/role/label">WYOMING</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInterestRateDerivativesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Interest Rate Derivatives [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfInterestRateDerivativesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Interest Rate Derivatives Designated as Cash Flow Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, New Issues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity offering</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityNoteDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementProcessesIntegratedTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Processes Integrated [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net earnings attributable to stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Net earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MO_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MISSOURI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesEPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Series E Preferred Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SeriesEPreferredStockMember_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Series E Preferred Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Preferred Stock, Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPreferredStockCash_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Preferred stock dividends declared and paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_KS_lbl" xlink:role="http://www.xbrl.org/2003/role/label">KANSAS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasicLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Facility [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OperatingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounted for using the operating method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OperatingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accounted for using the operating method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OperatingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Net Investment In Lease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OperatingLeaseNetInvestmentInLease_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating Lease, Net Investment In Lease</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASSETS</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_NM_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NEW MEXICO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Property, Accumulated Depreciation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less accumulated depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ChangeInUnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in unrecognized tax benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ChangeInUnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in unrecognized tax benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ChangeInUnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Change in unrecognized tax benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in Accumulated Other Comprehensive Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from investing activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retirement Benefits [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CompensationAndRetirementDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retirement Benefits [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares, Restricted Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: Unvested restricted shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan, Employer Matching Contribution, Percent of Match</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of participant's contributions matched by employer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AZ_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Arizona</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_AZ_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ARIZONA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageNotesPayableDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Notes Payable Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageNotesPayableDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Property, at Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Real estate subject to operating leases, gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income Recognized On Cash Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income Recognized On Cash Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenue recognized on cash basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted shares vested (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other liabilities</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingenciesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period, Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted shares forfeited (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfLongTermLinesOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Long-Term Lines of Credit</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_FL_lbl" xlink:role="http://www.xbrl.org/2003/role/label">FLORIDA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LondonInterbankOfferedRateLiborOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">LIBOR</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LondonInterbankOfferedRateLiborOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">London Interbank Offered Rate LIBOR One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LondonInterbankOfferedRateLiborOneMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">London Interbank Offered Rate LIBOR One [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net earnings available to common stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net earnings attributable to common stockholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Long-term Line of Credit, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Line of Credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCredit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Line of credit payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstateForeclosures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Foreclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstateForeclosures_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Foreclosures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2048Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due October 2048 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2048Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due October 2048 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2048Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2048 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Payment Arrangement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized compensation cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at the close of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at beginning of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying amount of mortgages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MT_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MONTANA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Revenues_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Investing Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash used in investing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Title of 12(b) Security</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AmortizationOfDeferredCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amortization of deferred compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AmortizationOfDeferredCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Deferred Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_AmortizationOfDeferredCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of deferred compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Investment Income, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investment Income, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentIncomeNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Interest and other income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayable2033Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable 2033 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayable2033Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable 2033 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRedeemedOrCalledDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Redeemed or Called During Period, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRedeemedOrCalledDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redemption of depositary shares (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRedeemedOrCalledDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Preferred stock, shares redeemed (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Future minimum payments receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOperatingCapitalAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in operating assets and liabilities, net of assets acquired and liabilities assumed:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockDividendsPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Preferred Stock, Dividends Paid [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockDividendsPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Dividends Paid [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockDividendsPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock, Dividends Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Real Estate Subject to Operating Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationStartYearOfConstruction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Start Year of Construction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationStartYearOfConstruction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate and Accumulated Depreciation Start Year of Construction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationStartYearOfConstruction_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate and accumulated depreciation start year of construction.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCashAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Cash [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCashAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends declared and paid:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_UnrecapturedSection1250GainMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unrecaptured Section 1250 Gain [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_UnrecapturedSection1250GainMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecaptured Section 1250 Gain [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_UnrecapturedSection1250GainMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecaptured Section&#160;1250 Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Tax Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Unrecognized Tax Benefits, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Unrecognized Tax Benefits, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unrecognized tax benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received, Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2029</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid-in Capital [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapitalMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital in Excess of Par Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">director compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueIssuedForServices_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Issued for Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OrdinaryDividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ordinary dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OrdinaryDividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ordinary dividends [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OrdinaryDividendsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ordinary dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfAtTheMarketEquityProgramTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of ATM Program</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfAtTheMarketEquityProgramTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of At The Market Equity Program [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfAtTheMarketEquityProgramTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of At The Market Equity Program [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFiniteLivedIntangibleAssetsTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Asset, Finite-Lived [Table]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RetirementAndSeveranceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retirement And Severance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RetirementAndSeveranceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Retirement And Severance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RetirementAndSeveranceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retirement And Severance Costs</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from notes payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofFiniteLivedIntangibleAssetsAndBelowMarketLeaseLiabilitiesAndFutureAmortizationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Finite-Lived Intangible Assets And Below-Market Lease Liabilities, And Future Amortization [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofFiniteLivedIntangibleAssetsAndBelowMarketLeaseLiabilitiesAndFutureAmortizationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Finite-Lived Intangible Assets And Below-Market Lease Liabilities, And Future Amortization [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofFiniteLivedIntangibleAssetsAndBelowMarketLeaseLiabilitiesAndFutureAmortizationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible Assets, Lease Liabilities, and Related Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group, Held-for-Sale, Not Discontinued Operations [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisposalGroupHeldforsaleNotDiscontinuedOperationsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets Held-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received, Year Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentPropertyNetBeforeDevelopmentInProcess_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real Estate Investment Property, Net, Before Development In Process</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentPropertyNetBeforeDevelopmentInProcess_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Property, Net, Before Development In Process</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentPropertyNetBeforeDevelopmentInProcess_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Real estate subject to operating leases, net, before work in process</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from financing activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReconciliationOfRealEstateAccumulatedDepreciationRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated depreciation and amortization:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDuePriorFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Rent deferral, year ending December 31, 2020</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDuePriorFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rent deferral lease amendments, prior rent originally</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDuePriorFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor lease rent deferral lease amendments due to covid 19 deferred rent originally due prior fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDuePriorFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Lease Rent Deferral Lease Amendments Due to Covid 19 Deferred Rent Originally Due Prior Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MS_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MISSISSIPPI</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RentalRevenues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rental Revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RentalRevenues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Rental Revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RentalRevenues_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income Before Real Estate Expense Reimbursements From Tenants.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RentalRevenues_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Rental revenues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsAndNotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accounts and Financing Receivable, after Allowance for Credit Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsAndNotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts and Financing Receivable, after Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsAndNotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Receivables, net of allowance of $609 and $617, respectively</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit, Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LinesOfCreditCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of credit payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MovementInMortgageLoansOnRealEstateRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MovementInMortgageLoansOnRealEstateRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-29, Real Estate Companies, Investment in Movement in Mortgage Loans on Real Estate [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_ND_lbl" xlink:role="http://www.xbrl.org/2003/role/label">NORTH DAKOTA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_VT_lbl" xlink:role="http://www.xbrl.org/2003/role/label">VERMONT</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_VT_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Vermont</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorLeaseDescriptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Lease, Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorLeaseDescriptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Lessor, Lease, Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in work in progress accrual</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInFinishedGoodsAndWorkInProcessInventories_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Finished Goods and Work in Process Inventories</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentAnnualReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Annual Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentAnnualReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Annual Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_MI_lbl" xlink:role="http://www.xbrl.org/2003/role/label">MICHIGAN</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rental income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Rental income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OperatingLeaseIncomeStatementRealEstateExpenseReimbursementFromTenants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Operating Lease Income Statement, Real Estate Expense Reimbursement From Tenants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OperatingLeaseIncomeStatementRealEstateExpenseReimbursementFromTenants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease Income Statement, Real Estate Expense Reimbursement From Tenants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_OperatingLeaseIncomeStatementRealEstateExpenseReimbursementFromTenants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate expense reimbursement from tenants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Issuance of common stock - restricted shares, net (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Aggregate Carrying Value of Outstanding Derivative Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Fair Value, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative, Fair Value, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Employee Stock Purchase Plans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesEmployeeStockPurchasePlans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - Stock purchase plan (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_ID_lbl" xlink:role="http://www.xbrl.org/2003/role/label">IDAHO</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsCharacterizationForTaxPurposeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Dividends Characterization for Tax Purpose [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsCharacterizationForTaxPurposeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Characterization for Tax Purpose [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DividendsCharacterizationForTaxPurposeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends Characterization for Tax Purpose [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Depreciation, Depletion and Amortization, Nonproduction, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Depletion and Amortization, Nonproduction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationAndAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Depreciation and amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Financing Receivable, after Allowance for Credit Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, after Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Building and Building Improvements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingAndBuildingImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Buildings and improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Intangible Assets, Net (Excluding Goodwill) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IntangibleAssetsNetExcludingGoodwillAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Intangible lease assets (included in other assets):</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedInvestmentIncomeReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">increase of accrued rental income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInAccruedInvestmentIncomeReceivable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Accrued Investment Income Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendPayableDateToBePaidDayMonthAndYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable, Date to be Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Accumulated Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Less: accumulated amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ForwardSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Forward Swap</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ForwardSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Forward Swap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ForwardSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Forward Swap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Common Stock, Value, Issued, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Common Stock, Value, Issued, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Common Stock, Value, Issued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, $0.01 par value. Authorized 375,000,000 shares; 189,937,404 and 187,540,929 shares issued and outstanding, respectively</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfStatesInWhichEntityOperates_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of States in which Entity Operates</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NumberOfStatesInWhichEntityOperates_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">States</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ExecutiveRetirementCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Executive retirement costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ExecutiveRetirementCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Executive Retirement Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ExecutiveRetirementCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Executive retirement costs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net earnings used in basic and diluted earnings per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consolidation, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsolidationPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principles of Consolidation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">accumulated other comprehensive income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Stockholders' equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateGrossAtCarryingValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross Amount at Which Carried at Close of Period, Land, Building, Improvements &amp; Leasehold Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received, after Year Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Deferred Tax Assets, Operating Loss Carryforwards, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Assets, Operating Loss Carryforwards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxAssetsOperatingLossCarryforwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net operating loss carryforward</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementProcessesForAssessingIdentifyingAndManagingThreatsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EarningsAttributableToUnvestedRestrictedSharesUsingTwoClassMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Earnings attributable to unvested shares using the two-class method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EarningsAttributableToUnvestedRestrictedSharesUsingTwoClassMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Attributable To Unvested Restricted Shares Using the Two-Class Method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EarningsAttributableToUnvestedRestrictedSharesUsingTwoClassMethod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Less: Earnings allocated to unvested restricted shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfLongLivedAssetsHeldForSaleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disclosure of Long-Lived Assets Held-for-Sale [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DisclosureOfLongLivedAssetsHeldForSaleTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real Estate Held for Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Nonoperating Income (Expense) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other expenses (revenues):</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityPublicFloat_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Public Float</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityPublicFloat_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Public Float</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SettlementOfForwardStartingSwapsGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Settlement Of Forward Starting Swaps Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SettlementOfForwardStartingSwapsGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Settlement Of Forward Starting Swaps Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SettlementOfForwardStartingSwapsGainLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Settlement of forward starting swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PreferredStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Preferred stock, shares authorized (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsByMajorClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets by Major Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisNumberOfTenants_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income Recognized On Cash Basis, Number Of Tenants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisNumberOfTenants_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income Recognized On Cash Basis, Number Of Tenants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisNumberOfTenants_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of tenants for which revenue recognized on cash basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisNumberOfTenants_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Number of tenants</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax penalties and interest accrued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Line of Credit Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityVoluntaryFilers_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Voluntary Filers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityVoluntaryFilers_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Voluntary Filers</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofRedeemablePreferredStockTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Redeemable Preferred Stock [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofRedeemablePreferredStockTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Redeemable Preferred Stock [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleofRedeemablePreferredStockTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Preferred Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Nonoperating Income (Expense)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total other expenses (revenues)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total other expenses (revenues)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Additional Paid in Capital, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Additional Paid in Capital, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Additional Paid in Capital, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Paid in Capital</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalPaidInCapital_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capital in excess of par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss) [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="cyd_CybersecurityRiskManagementPositionsOrCommitteesResponsibleFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cybersecurity Risk Management Positions or Committees Responsible [Flag]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Sale of Real Estate Held-for-investment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale, Real Estate, Held-for-Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfRealEstateHeldforinvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from the disposition of real estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SOFR</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income Tax Expense (Benefit), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income tax expense (benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Total tax expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareCashPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Dividends, Per Share, Cash Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Amount at Which Carried at Close of Period, Building, Improvements &amp; Leasehold Interests</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfBuildingsAndImprovements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Building and Improvements, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Issuance of Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from issuance of common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromIssuanceOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net proceeds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share-based Compensation Arrangement by Share-based Payment Award [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredTaxLiabilitiesBuiltInGain_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred Tax Liabilities, Built-in Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredTaxLiabilitiesBuiltInGain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities, Built-in Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredTaxLiabilitiesBuiltInGain_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Built-in gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationEndYearOfConstruction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">End Year of Construction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationEndYearOfConstruction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate And Accumulated Depreciation End Year of Construction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationEndYearOfConstruction_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate and accumulated depreciation end year of construction.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accumulated Other Comprehensive Income (Loss), Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Accumulated other comprehensive income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment for (Proceeds from) Other Investing Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromOtherInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Restricted shares granted (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Restricted shares granted (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfPropertyPlantAndEquipmentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property, Plant and Equipment [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncontrollingInterestInVariableInterestEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncontrolling Interest in Variable Interest Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value of Financial Instruments, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfFinancialInstrumentsPolicy_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EquityPlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Equity Plan Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EquityPlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Plan Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_EquityPlanNameAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Plan Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, New Mortgage Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">New mortgage loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansOnRealEstateNewMortgageLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Mortgages accepted in connection with real estate transactions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfAggregateGrossLeasableArea_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lease Income Recognized On Cash Basis, Percentage Of Aggregate Gross Leasable Area</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfAggregateGrossLeasableArea_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease Income Recognized On Cash Basis, Percentage Of Aggregate Gross Leasable Area</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfAggregateGrossLeasableArea_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of aggregate gross leasable area for which revenue recognized on cash basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfAggregateGrossLeasableArea_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total gross leasable area</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Number of Shares Issued in Transaction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shelf registration, shares issued (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNumberOfSharesIssuedInTransaction_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares of common stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, New Issues</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - Equity offering (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesNewIssues_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Shares of common stock (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Restricted shares vested (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property Subject to or Available for Operating Lease [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Subject to or Available for Operating Lease [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Diluted, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2030</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title and Position [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueDecember2026Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due December 2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueDecember2026Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due December 2026 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueDecember2026Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Auditor Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingConstructionCommitmentsNumberOfProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingConstructionCommitmentsNumberOfProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Funding Construction Commitments, Number Of Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingConstructionCommitmentsNumberOfProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real Estate Investment Funding Construction Commitments, Number Of Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageNumberOfSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average number of shares outstanding (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageNumberOfSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Weighted average number of shares outstanding including unvested restricted shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageNumberOfSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number Of Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageNumberOfSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted average number of shares outstanding (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_WeightedAverageNumberOfSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Weighted average shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateFederalIncomeTaxBasis1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate, Federal Income Tax Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateFederalIncomeTaxBasis1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgages held, federal income tax basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueJune2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due June 2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueJune2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due June 2024 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueJune2024Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Face Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFaceAmount_lbl" xlink:role="http://www.xbrl.org/2009/role/netLabel">Initial Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_SC_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">South Carolina</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_SC_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SOUTH CAROLINA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Exercise Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Non-vested restricted shares, December 31 (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageExercisePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Non-vested restricted shares, January 1 (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant, and Equipment, Lessor Asset under Operating Lease [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertySubjectToOrAvailableForOperatingLeaseByMajorPropertyClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Subject to or Available for Operating Lease, by Major Property Class [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Maximum Borrowing Capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Revolving credit facility borrowing capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured term loan, maximum borrowing capacity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_DE_lbl" xlink:role="http://www.xbrl.org/2003/role/label">DELAWARE</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateHeldforsale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate, Held-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateHeldforsale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Classified as held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amortization of interest rate hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) reclassification to interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), Reclassification, after Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationAfterTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Amortization of interest rate hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateDispositionsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Dispositions [Policy Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Employee Stock Purchase Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueEmployeeStockPurchasePlan_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">stock purchase plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredRentReceivablesAllowanceForCreditLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">The valuation allowance as of the balance sheet date to reduce the gross amount of accrued rent receivable to estimated net realizable value, which would be presented in parentheses on the face of the balance sheet.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredRentReceivablesAllowanceForCreditLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Rent Receivables, Allowance For Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredRentReceivablesAllowanceForCreditLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued rental income allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LineofCreditFacilityAccordionFeatureIncreaseLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Line of Credit Facility, Accordion Feature, Increase Limit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LineofCreditFacilityAccordionFeatureIncreaseLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Line of Credit Facility, Accordion Feature, Increase Limit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LineofCreditFacilityAccordionFeatureIncreaseLimit_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Option to increase facility size</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Land Improvements [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LandImprovementsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Land improvements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Amount at Which Carried at Close of Period, Land</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAndAccumulatedDepreciationCarryingAmountOfLand_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation, Land, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Disposal Group Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Disposal Group Name [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfAboveAndBelowMarketLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of above and below Market Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfAboveAndBelowMarketLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization expense, above- and below-market leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Lease, Cost, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Real estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Cash Equivalents, Policy [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndCashEquivalentsPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and Cash Equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">restricted shares - net of forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings from operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CollectabilityPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collectability [Policy Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CollectabilityPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of accounting policy for collectability.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CollectabilityPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collectability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueNovember2025Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due November 2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueNovember2025Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due November 2025 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueNovember2025Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025 Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Deficit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">ATM Equity Program [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">ATM Equity Program [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ATMEquityProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ATM Equity Programs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of Stock Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfStockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Stock issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtIssuanceCostsLineOfCreditArrangementsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan costs incurred</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtIssuanceCostsLineOfCreditArrangementsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Line of Credit Arrangements, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InventoryLandHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Inventory, Land, Held-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InventoryLandHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Real estate held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InventoryLandHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Classified as held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_FinancingReceivableHistoricalCollectabilityTrendAnalysisPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing Receivable, Historical Collectability Trend Analysis, Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_FinancingReceivableHistoricalCollectabilityTrendAnalysisPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Historical Collectability Trend Analysis, Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_FinancingReceivableHistoricalCollectabilityTrendAnalysisPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collectability analysis, period used</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Financing Activity, Including Discontinued Operation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by (used in) financing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Notes Payable, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notes payable, net of unamortized discount and unamortized debt costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor, Operating Lease, Payment to be Received, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorLocation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Auditor Location</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriodUsedInCalculation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Share-based Compensation Arrangement by Share-based Payment Award, Performance Period Used In Calculation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriodUsedInCalculation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-based Compensation Arrangement by Share-based Payment Award, Performance Period Used In Calculation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardPerformancePeriodUsedInCalculation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performance period used In calculation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Dispositions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateCostOfRealEstateSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Realized gain &#8211; available-for-sale securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_DC_lbl" xlink:role="http://www.xbrl.org/2003/role/label">DISTRICT OF COLUMBIA</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DebtInstrumentMaximumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument Maximum Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DebtInstrumentMaximumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Debt Instrument Maximum Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DebtInstrumentMaximumAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument Maximum Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Information [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInformationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Information [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Tax Liabilities, Gross [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredTaxLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred tax liabilities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Lease Income [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseLeaseIncomeTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Rental Income, Operating Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MortgageLoansOnRealEstateAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-29, Real Estate Companies, Investment in Mortgage Loans on Real Estate [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitmentsRemainingCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real Estate Investment, Funding Commitments, Remaining Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitmentsRemainingCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment, Funding Commitments, Remaining Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitmentsRemainingCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitmentsRemainingCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Real Estate Investment, Funding Commitments, Remaining Commitment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows from operating activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sale of Properties</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfProperties_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on disposition of real estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentRepaid_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Repaid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentRepaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessor Lease, Rent Deferral Lease Amendments Due To Covid-19, Deferred Rent Repaid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentRepaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deferred rent repaid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DefinedContributionPlanEmployerContributionAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Defined Contribution Plan, Employer Contribution Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DefinedContributionPlanEmployerContributionAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Defined Contribution Plan, Employer Contribution Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DefinedContributionPlanEmployerContributionAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employer contributions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfDividendsDeclaredAndPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of Dividends Declared and Paid [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfDividendsDeclaredAndPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Dividends Declared and Paid [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ScheduleOfDividendsDeclaredAndPaidTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Dividends Declared and Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AboveMarketLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Above Market Leases [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AboveMarketLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Above-market in-place leases, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_OK_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OKLAHOMA</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock dividends declared and paid (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Issued for Services</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesIssuedForServices_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock - Director compensation (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyAtCostAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment Property, at Cost [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateInvestmentPropertyAtCostAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Property Portfolio:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gains (Losses) on Sales of Investment Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain on disposition of real estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainsLossesOnSalesOfInvestmentRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenues [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenuesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revenues:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfNotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Notes Payable</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-term Debt, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitmentsAmountFunded_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real Estate Investment, Funding Commitments, Amount Funded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitmentsAmountFunded_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Investment, Funding Commitments, Amount Funded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateInvestmentFundingCommitmentsAmountFunded_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less amount funded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate and Accumulated Depreciation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredDirectorsFeesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Deferred Director's fees [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_DeferredDirectorsFeesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Director's fees [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Organization and Summary of Significant Accounting Policies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DirectFinancingLeaseLeaseIncomeTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Direct Financing Lease, Lease Income [Table Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockRedemptionPricePerDepositoryShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Preferred Stock Redemption Price Per Depository Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockRedemptionPricePerDepositoryShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Preferred Stock Redemption Price Per Depository Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_PreferredStockRedemptionPricePerDepositoryShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stated liquidation value per share (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive Income (Loss) [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Diluted [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average shares outstanding:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_StockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_StockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_StockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Stock issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_StockIssuanceCosts_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Stock issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorOpinionTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Auditor Opinion [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AuditorOpinionTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Auditor Opinion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SaleOfStockAveragePricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale of Stock, Average Price Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SaleOfStockAveragePricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock, Average Price Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SaleOfStockAveragePricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Average price per share (net) (in dollars per share)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationEndingYearAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Acquired of Ending Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationEndingYearAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate and Accumulated Depreciation Ending Year Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_RealEstateAndAccumulatedDepreciationEndingYearAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Real estate and accumulated depreciation ending year acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingPoliciesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Policies [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockNumberOfSharesParValueAndOtherDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of common stock:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Dividend Reinvestment Plan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesDividendReinvestmentPlan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Shares&#160;of&#160;common&#160;stock (in shares)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ImpairmentOfRealEstatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment - Real Estate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_ImpairmentOfRealEstatePolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Disclosure of accounting policy for impairment of real estate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic, by Common Class, Including Two-Class Method [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Earnings Per Share, Basic, by Common Class, Including Two Class Method [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="stpr_CT_lbl" xlink:role="http://www.xbrl.org/2003/role/label">CONNECTICUT</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SaleOfSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Share Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_SaleOfSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Sale of Share Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Stock [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ClassOfStockDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Stock [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2028Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Notes Payable Due October 2028 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_NotesPayableDueOctober2028Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable Due October 2028 [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RealEstateAndAccumulatedDepreciationAmountOfEncumbrances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Encumbrances</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="nnn_CashBasisTenantsAsAPercentOf_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash basis tenants as a percent of:</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfStockByClassTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock, Class of Stock [Table]</link:label>
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  <xsd:element id="nnn_NontaxableDistributionsMember" name="NontaxableDistributionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_PropertySubjectToDirectFinancingMember" name="PropertySubjectToDirectFinancingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_DeferredDirectorsFeesMember" name="DeferredDirectorsFeesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_ScheduleofRedeemablePreferredStockTableTextBlock" name="ScheduleofRedeemablePreferredStockTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_EquityPlanNameAxis" name="EquityPlanNameAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_ScheduleofFiniteLivedIntangibleAssetsAndBelowMarketLeaseLiabilitiesAndFutureAmortizationTableTextBlock" name="ScheduleofFiniteLivedIntangibleAssetsAndBelowMarketLeaseLiabilitiesAndFutureAmortizationTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_PeriodForImprovementsToConstructionCommitments" name="PeriodForImprovementsToConstructionCommitments" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_ScheduleOfInvestmentPropertiesTableTextBlock" name="ScheduleOfInvestmentPropertiesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_NotesPayableDueOctober2048Member" name="NotesPayableDueOctober2048Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_OperatingLeaseNetInvestmentInLease" name="OperatingLeaseNetInvestmentInLease" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_RetirementAndSeveranceCosts" name="RetirementAndSeveranceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_RealEstateAndAccumulatedDepreciationBeginningYearAcquired" name="RealEstateAndAccumulatedDepreciationBeginningYearAcquired" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_IncrementalRestrictedSharesAttributableToContingentlyIssuableShares" name="IncrementalRestrictedSharesAttributableToContingentlyIssuableShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_RealEstateInvestmentFundingCommitmentsRemainingCommitment" name="RealEstateInvestmentFundingCommitmentsRemainingCommitment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_IncreaseDecreaseInAccruedRentalIncome" name="IncreaseDecreaseInAccruedRentalIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_DividendsCharacterizationForTaxPurposeAxis" name="DividendsCharacterizationForTaxPurposeAxis" type="xbrli:stringItemType" substitutionGroup="xbrldt:dimensionItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_NotesPayableDueApril2030Member" name="NotesPayableDueApril2030Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_CapitalGainMember" name="CapitalGainMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_CommonStockDividendsPaidTableTextBlock" name="CommonStockDividendsPaidTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_LeaseIncomeRecognizedOnCashBasisPercentageOfAggregateGrossLeasableArea" name="LeaseIncomeRecognizedOnCashBasisPercentageOfAggregateGrossLeasableArea" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="nnn_ScheduleOfAtTheMarketEquityProgramTableTextBlock" name="ScheduleOfAtTheMarketEquityProgramTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_ChangeInUnrecognizedTaxBenefits" name="ChangeInUnrecognizedTaxBenefits" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_RealEstateInvestmentFundingCommitmentsAmountFunded" name="RealEstateInvestmentFundingCommitmentsAmountFunded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_LondonInterbankOfferedRateLiborOneMember" name="LondonInterbankOfferedRateLiborOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwards" name="EffectiveIncomeTaxRateReconciliationOperatingLossCarryforwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_PreferredStockDividendsPaidTableTextBlock" name="PreferredStockDividendsPaidTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_NumberOfInvestmentPropertiesLeasedUnderDirectFinancingLeases" name="NumberOfInvestmentPropertiesLeasedUnderDirectFinancingLeases" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="nnn_ScheduleOfComputationOfEarningsPerShareBasicAndDilutedTableTextBlock" name="ScheduleOfComputationOfEarningsPerShareBasicAndDilutedTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_LessorLeasePercentOfRentCollectedForPreviousQuarter" name="LessorLeasePercentOfRentCollectedForPreviousQuarter" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="nnn_RealEstateInvestmentPropertyAdditions" name="RealEstateInvestmentPropertyAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantsinPeriodAbstract" name="SharebasedCompensationArrangementbySharebasedPaymentAwardEquityInstrumentsOtherthanOptionsGrantsinPeriodAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_NotesPayableDueOctober2022Member" name="NotesPayableDueOctober2022Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_ExecutiveRetirementCosts" name="ExecutiveRetirementCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_RealEstateDispositionsPolicyTextBlock" name="RealEstateDispositionsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_NumberOfShareSold" name="NumberOfShareSold" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_CashBasisTenantsAsAPercentOf" name="CashBasisTenantsAsAPercentOf" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_RealEstateInvestmentPropertyNetBeforeDevelopmentInProcess" name="RealEstateInvestmentPropertyNetBeforeDevelopmentInProcess" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_RohdeIslandMember" name="RohdeIslandMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_InvestmentPropertiesTotal" name="InvestmentPropertiesTotal" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="nnn_RealEstateInvestmentFundingCommitments" name="RealEstateInvestmentFundingCommitments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_NumberOfImpairedRealEstatePropertiesOccupied" name="NumberOfImpairedRealEstatePropertiesOccupied" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_ScheduleOfRealEstateInvestmentPortfolioRemainingFundingCommitmentsTableTextBlock" name="ScheduleOfRealEstateInvestmentPortfolioRemainingFundingCommitmentsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_OperatingLeaseIncomeStatementRealEstateExpenseReimbursementFromTenants" name="OperatingLeaseIncomeStatementRealEstateExpenseReimbursementFromTenants" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentDueCurrentFiscalYear" name="LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentDueCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_NotesPayableNetPriceAtIssuance" name="NotesPayableNetPriceAtIssuance" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_NumberOfPropertiesSecuringMortgagesPayable" name="NumberOfPropertiesSecuringMortgagesPayable" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="nnn_PreferredStockRedemptionPricePerDepositoryShare" name="PreferredStockRedemptionPricePerDepositoryShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="nnn_NotesPayableDueJune2034Member" name="NotesPayableDueJune2034Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_ATMEquityProgram2018Member" name="ATMEquityProgram2018Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_NotesPayableDueApril2050Member" name="NotesPayableDueApril2050Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDueCurrentFiscalYear" name="LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDueCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_WeightedAverageRemainingLeaseTerm" name="WeightedAverageRemainingLeaseTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentRepaid" name="LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentRepaid" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDuePriorFiscalYear" name="LessorLeaseRentDeferralLeaseAmendmentsDueToCovid19DeferredRentOriginallyDuePriorFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_ForwardSwapMember" name="ForwardSwapMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_NotesPayableDueApril2023Member" name="NotesPayableDueApril2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_EarningsAttributableToUnvestedRestrictedSharesUsingTwoClassMethod" name="EarningsAttributableToUnvestedRestrictedSharesUsingTwoClassMethod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriodWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_LeaseIncomeAccruedDuringPeriod" name="LeaseIncomeAccruedDuringPeriod" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_DebtInstrumentMaximumAmount" name="DebtInstrumentMaximumAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_SettlementOfForwardStartingSwapsGainLoss" name="SettlementOfForwardStartingSwapsGainLoss" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_AtmEquityProgram2023Member" name="AtmEquityProgram2023Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_NotesPayableTextBlock" name="NotesPayableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_ATMEquityProgramMember" name="ATMEquityProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_DividendsTextBlock" name="DividendsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_CarryingValueOfPropertiesSecuringMortgagesPayable" name="CarryingValueOfPropertiesSecuringMortgagesPayable" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_ATMEquityProgram2020Member" name="ATMEquityProgram2020Member" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_DevelopmentInProcessAdditions" name="DevelopmentInProcessAdditions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_MortgageLoansOnRealEstateOther" name="MortgageLoansOnRealEstateOther" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_StockIssuanceCosts" name="StockIssuanceCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_PerformanceIncentivePlanExpense" name="PerformanceIncentivePlanExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_PerformanceIncentivePlanPayment" name="PerformanceIncentivePlanPayment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="nnn_DividendsCharacterizationForTaxPurposeDomain" name="DividendsCharacterizationForTaxPurposeDomain" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="nnn_FairValueOfForwardStartingSwap" name="FairValueOfForwardStartingSwap" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="nnn_LessorLeaseTermOfContract" name="LessorLeaseTermOfContract" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_NumberOfInterestRateDerivativesTerminated" name="NumberOfInterestRateDerivativesTerminated" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="nnn_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_SummaryOfTenantsClassifiedAsCashBasisTableTextBlock" name="SummaryOfTenantsClassifiedAsCashBasisTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="nnn_SECSchedule1229RealEstateCompaniesInvestmentinMovementinMortgageLoansonRealEstatePeriodDecreaseAbstract" name="SECSchedule1229RealEstateCompaniesInvestmentinMovementinMortgageLoansonRealEstatePeriodDecreaseAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>