Triple Net Lease (NNN) Explained: How They Work for Investors

Most residential investors will never see a triple net lease. They live in the commercial world: drugstores, dollar stores, fast food pads, auto parts retailers, medical offices, and industrial buildings. But for investors looking to graduate from active landlording into truly passive real estate, NNN is one of the cleanest structures in the entire industry.

Here is what triple net leases are, how they pay, what they cost in yield, and where they belong in a portfolio.

What "triple net" actually means

In a triple net lease, the tenant pays three categories of expense on top of base rent:

1. Property taxes — billed directly or reimbursed to the landlord
2. Property insurance — including building structure coverage
3. Maintenance — everything from HVAC to parking lot resurfacing to roof replacement, depending on the lease

The landlord receives base rent only, which is therefore the same number as net operating income — there are no operating expenses on the landlord's books. That is what makes NNN so attractive: predictable, hands-off income for the entire lease term.

Typical NNN lease terms

Length

NNN leases are long. Standard initial terms run 10 to 25 years, often with 4-5 renewal options of 5 years each. A new Walgreens build-to-suit, for example, typically signs a 25-year primary term with four 5-year options — 45 years of contractual income.

Rent escalations

Most NNN leases have built-in rent bumps. Common structures:
• Flat for primary term with a step-up at renewal (older Walgreens/CVS deals)
• 10% every 5 years (typical for newer drugstore and QSR pads)
• 2% annually or CPI-linked (industrial and medical)

Corporate vs franchisee guarantee

This is the most important distinction in NNN underwriting. A corporate-guaranteed lease — Walgreens corporate, Dollar General corporate, FedEx — has the credit of the parent company behind it. A franchisee-guaranteed lease (a McDonald's owned by an individual operator, for example) has only that operator's balance sheet.

Corporate guarantees trade at lower cap rates because the risk is lower. Franchisee deals trade 75-150 basis points higher in cap rate to compensate.

Why residential investors rarely see NNN

NNN structures essentially do not exist for single-family or small multifamily rentals. There are a few reasons.

Residential tenants are individuals or families with consumer-protection laws covering them — habitability standards require landlords to maintain the property regardless of what the lease says. A residential tenant cannot be required to pay property taxes; that is the landlord's obligation under most state laws.

Commercial tenants are businesses negotiating freely. They can take on any expense category they agree to. That is why NNN is a commercial-only structure.

NNN vs gross lease vs modified gross

Gross lease (full-service)

Tenant pays one all-in rent. Landlord covers taxes, insurance, maintenance, utilities, everything. Common in office and short-term retail. Cap rates are typically 50-100 bps higher than NNN to compensate the landlord for expense risk.

Modified gross

Tenant pays base rent plus their share of certain expenses (typically utilities and janitorial). Landlord still covers taxes, insurance, structure. Common in office and small retail.

NN (double net)

Tenant pays taxes and insurance, landlord covers structural maintenance. Less common today than full NNN.

NNN (triple net)

Tenant pays everything operational. Landlord just collects rent.

Absolute net (sometimes called "bond lease")

Tenant pays absolutely everything including roof and structure. Landlord has zero obligations beyond owning the dirt and the building. This is the most landlord-friendly structure and trades at the tightest cap rates.

Pros of NNN investing

Predictable, hands-off income

You collect a check. That is the whole job. No maintenance calls, no vacancy management, no expense surprises. The closest thing to a bond in real estate.

Long-term tenants

15-25 year leases with national credit tenants are the norm. You know exactly what your income looks like for 15+ years.

1031 exchange friendly

NNN deals are popular landing spots for investors exiting active rentals via 1031 exchanges. They let you defer the gain while shifting from active to passive.

Easy to finance

Lenders love long-term credit-tenant leases. You can often get 30-year amortizations at attractive rates with non-recourse terms on investment-grade NNN.

Cons of NNN investing

Lower cap rates

You pay for the predictability in yield. A residential rental in a cash-flow market might return 7-9% cap rate; a corporate-guaranteed NNN may return 5-6%. The trade is income volatility for income certainty.

Tenant credit risk is concentrated

One tenant. If they go bankrupt — see Toys R Us, Sears, Bed Bath & Beyond — your income goes to zero overnight. Diversification matters; sophisticated NNN investors hold portfolios across tenant types.

Re-tenanting risk at end of lease

Single-tenant buildings designed for one user (a drugstore or a quick-serve restaurant) can be hard to re-tenant when the lease ends. The lower the property's "second-generation use" appeal, the more risk you take at lease expiration.

Big check sizes

NNN deals usually start at $1.5M-$3M for a single-tenant pad. Small investors typically can't access this market directly without partners or a syndication.

Where NNN fits in a portfolio

For most investors, NNN belongs in the "stabilization" phase. After 10-15 years of building a residential or small-multifamily portfolio, many investors trade up via 1031 into one or two NNN deals to reduce active management and lock in long-term passive income through retirement.

For active investors still in growth mode, the lower yields and higher entry prices of NNN usually do not pencil. Stick with residential rentals, BRRRR, or small multifamily until your portfolio is large enough that simplification becomes more valuable than yield.

Insurance costs even on NNN deals matter for tenant underwriting and net effective rent — InsuranceCostCity has commercial insurance benchmarks if you're modeling tenant economics. And for the math on whether to refinance vs sell vs 1031 into NNN, the Mortgage Math Lab has the debt math.