Triple Net Lease (NNN)

Definition: A triple net lease (NNN) is a commercial lease in which the tenant pays base rent plus the three nets: property taxes, insurance, and maintenance, including most operating and common area costs. The landlord collects rent with little or no expense exposure, so nearly all of the contract rent flows through to net operating income. Triple net structures are standard in single-tenant retail and industrial and common in freestanding medical and quick-service properties.

Triple Net Lease in Practice

A freestanding retail property is leased to a national tenant on a 15-year triple net lease with $325,000 annual base rent. Because the tenant reimburses taxes, insurance, and maintenance, underwritten NOI is effectively $325,000. At a 6.5% cap rate the property is worth $325,000 / 0.065 = $5,000,000, and a lender sizing to 60% LTV offers $3,000,000. The same rent under a gross lease would produce far less NOI and materially lower proceeds.

Triple Net Lease: What the Market Actually Requires

When a lender underwrites a triple net asset, the lease is the collateral as much as the building. Underwriters read term, rent escalations, renewal options, tenant credit, and landlord obligations before they look at comps. The controlling relationship is lease term versus loan term: most permanent lenders want the primary term to run past loan maturity, and a 10-year loan against a lease with 6 years left either prices wider, gets held to lower proceeds, or carries a cash flow sweep starting 12 to 24 months before expiration.

Capital sources sort cleanly by lease profile. Life insurance companies are the natural home for long-term net leases to strong tenants, often quoting 20 to 25 year fully amortizing structures matched to the lease. CMBS lenders finance single assets and portfolios but obsess over dark value, what the building is worth empty, because that is their downside case. Banks like net leased industrial and will stretch on shorter lease terms when the sponsor signs recourse. For investment-grade tenants on absolute net leases, credit tenant lease executions size to the rent stream itself, sometimes at 1.0x to 1.05x DSCR fully amortizing within the term. Bridge lenders and debt funds pick up vacant boxes and short weighted average lease term deals that the permanent market will not touch.

The most common borrower mistake is trusting the flyer instead of the lease. Plenty of deals marketed as NNN are actually double net, with roof and structure on the landlord; lenders catch it, deduct a capital reserve, and cut NOI. Flat rent for 15 or 20 years is another quiet proceeds killer, since underwriters give no credit for inflation. And any early termination or contraction right will be found in lease review and priced against you, so surface it on day one.

Why It Matters for Your Loan

The lease structure determines how much of the contract rent a lender counts as net operating income, and that number sets your proceeds. A long triple net lease to a strong tenant unlocks the most aggressive fixed-rate executions in the market, while a mislabeled net lease with hidden landlord obligations gets haircut in underwriting and retraded at commitment. Commercial Lending Solutions places net lease financings across life companies, CMBS, CTL desks, and banks, matching lease term and tenant credit to the capital source that pays the most for that specific profile.

Triple Net Lease: FAQ

In a triple net lease the tenant pays base rent plus the three nets: property taxes, insurance, and maintenance, which usually includes common area costs. In an absolute net lease, the strictest version, the tenant also carries roof, structure, and capital replacements, leaving the landlord with virtually no obligations. A double net (NN) lease keeps roof and structure with the landlord, and lenders treat that differently, deducting a capital reserve from NOI. The lease language, not the marketing label, controls what the landlord actually nets.
Often, but only when the lease cooperates. A long triple net lease to a strong tenant is among the most financeable assets in commercial real estate, attracting life company, CMBS, and CTL executions at aggressive terms. The same building with six years of remaining term, a weak franchisee tenant, or flat rent for two decades can be harder to finance than a stabilized multi-tenant property. Lenders underwrite the lease as the primary repayment source, so financing quality tracks lease quality almost exactly.


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