Single-Tenant Net Lease (NNN) Acquisition and Loan Sizing Model — Step or Annual Rent Bumps, Lease-Expiry Downtime, MIN(LTV, DSCR, Debt Yield) Sizing and Levered IRR

Underwrite a single-tenant net-lease property for purchase and financing in one workbook: price from cap rate, 10-year rent schedule with step or annual escalations, landlord leakage and reserves, loan sized at the lowest of LTV, DSCR and debt yield, renew vs re-tenant lease-expiry scenario, and levered and unlevered returns with an exit-cap sensitivity grid.

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Built for buyers, brokers and lenders working on QSR, pharmacy, dollar-store, auto-service, medical and small-box industrial net-lease deals.

Inputs

  • Building SF, year-1 rent, going-in cap rate (or price override), closing costs
  • Escalations: annual % or step bumps every N years
  • Remaining primary term, landlord expense leakage (0% for absolute NNN), capital reserve $/SF
  • Debt: max LTV, min DSCR, min debt yield, rate, amortisation, interest-only years, origination fee
  • Exit: hold period (1-10 years), exit cap on forward NOI, selling costs

Lease-expiry scenario (the key STNL credit risk)

  • Renew: tenant exercises its option at the stated bump, escalations continue
  • Re-tenant: downtime months with no rent, landlord carries tax/insurance/CAM while dark, new market rent with growth, TI $/SF and leasing commissions on the new term
  • A flag on the Returns tab shows when the lease expires inside the hold

Outputs

  • Loan amount with the binding constraint named (LTV / DSCR / Debt yield), implied LTV, year-1 DSCR and debt yield, equity required
  • 10-year annual cash flow: rent, leakage, dark carry, reserves, NOI, TI/LC, debt service, levered cash flow, DSCR, debt yield, loan balance
  • Unlevered and levered IRR, equity multiples, average cash-on-cash, levered profit, minimum DSCR over hold
  • Sensitivity: levered profit and equity multiple across five exit cap rates and five purchase prices, with loan and equity re-sized per price
  • Checks block (sources = uses, loan within limits, valid hold) that must read OK

File: NNN_STNL_Acquisition_Loan_Sizing_Model.xlsx (Excel 2016+, no macros). Recalculated with zero formula errors in both scenarios before release. Built with AI assistance and reviewed by Eastwich Advisors. Illustrative inputs; not investment advice.

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