Single Tenant Net Lease (STNL) Investing: The Complete 2026 Guide

What Is a Single Tenant Net Lease (STNL)? A single tenant net lease — STNL for short — is a commercial real estate asset occupied by one tenant under a long-term net lease. The tenant pays base rent plus some combination of property taxes, insurance, and maintenance. The most common form is the triple net (NNN) lease, where the tenant pays all three. STNL properties are the workhorse of passive commercial real estate. They are simple to underwrite, easy to finance, and predictable to operate. A 1031 buyer trading out of a management-intensive apartment building almost always lands somewhere on the STNL spectrum — Walgreens, Dollar General, AutoZone, a quick service restaurant, a medical clinic, a bank branch. Why STNL Has Become the Default 1031 Replacement Three structural forces have pushed STNL to the front of the line: 1. Demographics. Boomers are exiting active management. STNL is the cleanest path from operator to landlord to lender to retirement. 2. Credit migration. Investment-grade tenants like Walmart, CVS, and 7-Eleven keep expanding through sale-leasebacks, flooding the market with bondable cash flow. 3. Financing depth. Life companies, credit unions, and CMBS lenders all underwrite STNL the same way, which keeps spreads tight and liquidity reliable. Cap Rate Landscape in 2026 Cap rates have widened from the 2021 lows but remain inside historical norms. Rough working ranges as of early 2026: - Investment-grade QSR (Chick-fil-A, McDonald's ground lease): 4.25%–5.25% - Investment-grade pharmacy (CVS, Walgreens) with 10+ years: 6.50%–7.75% - Dollar stores (Dollar General, Dollar Tree, Family Dollar): 6.75%–7.75% - Auto parts (AutoZone, O'Reilly, Advance): 5.75%–6.75% - Quick-lube and car wash: 6.00%–7.00% - Sub-investment-grade or unrated franchisees: 7.00%–9.00% Spreads compress for ground leases, long-WALT corporate guarantees, and dense MSAs. They widen for tertiary markets, short WALT, and franchisee guarantees with thin coverage. The Five-Factor STNL Underwriting Framework Institutional buyers stack these five filters before they ever sign an LOI: 1. Tenant Credit Investment-grade (BBB- or better) tenants get cap rate compression and the deepest financing. Sub-IG and franchisee deals require coverage ratio analysis and unit-level economics. Always request the 4-wall EBITDAR when buying a franchisee deal. 2. Lease Structure Absolute NNN beats double net beats NN-with-roof-and-structure. Read the lease — not the marketing flyer — for landlord obligations on roof, structure, parking lot, and HVAC. 3. Rent-to-Sales Ratio For QSR, drugstores, and dollar stores, you want occupancy cost below industry benchmarks. Above 8% rent-to-sales on a QSR is a yellow flag; above 10% is red. 4. Real Estate Fundamentals Would this site re-tenant if the credit walked? Hard corners, signalized intersections, 25,000+ VPD, and complementary co-tenancy create downside protection. 5. Lease Term and Bumps A 15-year primary term with 10% bumps every 5 years prices very differently from a flat-rent 10-year deal with options. Always run the IRR with and without options exercised. Common STNL Mistakes That Cost Real Money - Buying brand, not real estate. A Starbucks in a dying strip is still a dying strip. - Ignoring sales reporting. No sales reporting clause means no early warning before a closure. - Missing rollover risk. A 5-year remaining term at a 6 cap is not a 6 cap — it is option value. - Underestimating roof and parking lot capex. Especially in older drugstore boxes. - Skipping the estoppel. Verify what the tenant says they owe and what they think the lease says. How Net Lease World Helps STNL Buyers Net Lease World aggregates verified single tenant net lease listings from across the country, with filters for tenant, cap rate, lease term, price, and state. Set saved searches by tenant or geography and receive new-listing alerts the day deals hit the market. Browse the live <a href="/deals">STNL marketplace</a> or explore curated <a h…