NNN lease investing: the bond with a roof, underwritten properly
Single-tenant net lease — Dollar General, QSR pads, pharmacies, auto parts — where the tenant pays taxes, insurance, and maintenance, and your work is underwriting the lease and the credit. The passive endgame asset, with its concentration risk priced honestly.
What is a NNN lease? Triple net: the tenant pays base rent plus property taxes, insurance, and maintenance — leaving the landlord with income so passive it's routinely called "the bond with a roof." A single-tenant NNN building — the freestanding Dollar General, the QSR pad, the pharmacy corner, the auto-parts box — leased for 10–25 years to corporate or franchise credit with contractual rent bumps is the most hands-off ownership in direct real estate: no toilets, no tenants calling, often not even a lawn to mow. It's where 1031 equity from tired landlords traditionally lands, and its underwriting is unlike everything upstream: 80% lease and credit, 20% dirt.
Reading the lease: where the value actually lives
Two NNN buildings on identical corners can differ 30% in price on paper alone. The variables that move the money:
| The lease term | What it means for value | |
|---|---|---|
| Guarantor | Corporate (the parent company) vs. franchisee (one operator's LLC) | Corporate credit trades 75–150bps richer; a 40-unit franchisee guarantee is real but different — read the actual entity on the signature line |
| Remaining primary term | 18 years vs. 4 years to expiry | Short-term deals price at big discounts because you're really buying a re-leasing project — sometimes the best value on the menu, if the dirt supports it |
| Rent escalations | 10% every 5 years; flat; CPI-linked | Flat 20-year leases are inflation's lunch — the escalation schedule IS your real return profile |
| True NNN vs. NN | Absolute net vs. landlord keeps roof & structure | NN discounts exist for a reason: a roof on a 9,100 sq ft box is a $150k eventual reality — reserve for it or price it in |
| Options & kickouts | Tenant renewal options at preset rents; early termination rights | Options cap your upside (renewals at below-market preset rents); kickouts add risk. Both hide in the lease exhibits |
The credit is half the underwriting: investment-grade corporate paper (the drugstore chains, dollar stores' parent companies) behaves like a bond; franchisee paper requires reading the operator — unit count, tenure, the specific guarantee entity's assets. The dirt is the parachute: traffic counts, corner quality, demographics, and — the question that separates professionals — what does this box become if the tenant leaves? Fungible boxes (small retail on good corners) re-lease; purpose-built oddities (former pharmacies with drive-throughs, dark QSRs with specific layouts) sit. Dark-store comps in your metro are the honest answer to what your downside looks like.
The math and the financing
Financing follows the lease: lenders want the loan term inside the lease term, price by credit quality, and — on strong corporate deals — offer non-recourse and CTL (credit tenant lease) structures that lever the lease more than the building. The balloon discipline from small commercial applies doubled: refinancing a NNN with 6 years of term left is routine; with 2 years left, it's a negotiation about your re-leasing plan.
Where NNN fits in the plan
This is the Years 9–18 asset — the Commercial-and-boring stage's signature holding — and the classic sequence is consolidation: three appreciated rentals, 1031'd into one $1.5M NNN, trading nine tenants and three roofs for one corporate signature and a deposit that arrives like clockwork. Portfolio logic softens the concentration risk: two or three NNN assets across different tenants, sectors (dollar store + auto parts + medical), and lease maturities turn the single-tenant gamble into a laddered bond book — and at scale, that book is precisely what institutional net-lease buyers acquire, giving the small aggregator an exit at portfolio pricing. The endgame configuration is the calmest in real estate: NNN income, DST positions, and ground rents — assets that transfer to heirs as deposits rather than jobs.
Frequently asked questions
+What does NNN mean in commercial real estate?
Triple net: the tenant pays property taxes, insurance, and maintenance in addition to base rent — the landlord's income is effectively net of all operating costs. In single-tenant NNN deals (dollar stores, QSRs, pharmacies), the tenant often manages the property entirely; 'absolute net' leases push even roof and structure to the tenant, while 'NN' deals leave those with the landlord at a price discount.
+What is a good cap rate for NNN properties?
Investment-grade corporate leases with long terms trade around 5–6.5%; franchisee-guaranteed and shorter-term deals 6.5–8%+. The spread is credit and term risk being priced — a 'cheap' 8-cap usually means a weaker guarantee or a lease expiring soon. Compare against your debt cost and the honest re-leasing reserve, not against apartment cap rates.
+Are NNN properties really passive?
The most passive direct ownership there is: no maintenance calls, no turnover, often taxes and insurance paid directly by the tenant. The remaining work is front-loaded (lease and credit underwriting, dirt evaluation) plus periodic vigilance — monitoring tenant credit, planning the refinance against lease term, and preparing years ahead for expiry. Passive operations, not passive strategy.
+What happens when a NNN tenant leaves?
You own 100% vacancy in a purpose-shaped box — the risk the yields pay for. Defenses are chosen at purchase: fungible buildings on strong corners (check your metro's dark-store re-leasing history), lease term bought long, credit bought strong, and a re-lease reserve funded throughout. Well-located boxes re-tenant in months; wrong-shaped ones in wrong places sit for years.
+How much money do you need to buy a NNN property?
Single-tenant NNN trades from ~$800k (rural dollar stores) to $5M+ (drugstores, strong QSR corners); at 30–40% down that's roughly $250k–$2M of equity — which is why the standard buyer is a landlord consolidating several appreciated rentals through a 1031 exchange. Smaller checks access the asset class through DSTs and net-lease REITs.
The valuation grammar: commercial real estate and cap rates. The menu around it: small commercial. The consolidation machinery: 1031 exchanges and DSTs.