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Triple Net Lease (NNN): Pros, Cons & How to Negotiate One

A triple net lease can lower your base rent — or quietly cost you 30 to 100% more than quoted. What NNN actually means, the real cost math, and how to negotiate it.

By TenantBase

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A triple net lease can lower your base rent — or quietly cost you 30 to 100% more than quoted. Here's what NNN actually means, the real math, and how to negotiate one.
Originally published August 2022  ·  Updated August 2026

A lot of tenants ask the same question when they see a triple net (NNN) lease on the table: is this good or bad for me? The honest answer is that a triple net lease isn't inherently either — it can be a genuine financial advantage or a costly trap, and the difference almost entirely comes down to negotiation, not the lease structure itself.

Quick Answer

A triple net lease quotes a lower base rent than a gross lease, but the tenant pays property taxes, insurance, and CAM on top. Well-negotiated CAM terms keep the total cost competitive; loosely defined CAM can push your real occupancy cost 30 to 100 percent above the quoted rate.1 The lease structure itself isn't the risk — an undefined, uncapped CAM clause is.

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What Is a Triple Net Lease?

A triple net lease, often written as NNN, is a commercial lease structure where the tenant pays a portion or all of a building's ongoing operating expenses — property taxes, building insurance, and common area maintenance (CAM) — in addition to base rent.2 It's the most common net lease structure in U.S. commercial real estate, particularly for retail strip centers, standalone retail, and single-tenant industrial buildings.

The name comes from the three "nets" — taxes, insurance, and maintenance — that get passed through to the tenant on top of the base lease rate. This is different from a gross lease, where the landlord bundles most of those costs into a single quoted rent figure.

The Real Math: What NNN Actually Costs

The quoted base rate on an NNN lease is almost never what you'll actually pay. Here's what the total cost looks like in practice for a 5,000 SF space at $18/SF base rent:

Cost Component Well-Negotiated NNN Loosely Defined NNN
Base rent ($18/SF) $90,000/yr $90,000/yr
Taxes + insurance + CAM +$3/SF ($15,000) +$9–18/SF ($45K–$90K)
Total annual cost ~$105,000 $135,000–$180,000

The gap between those two columns — potentially $30,000 to $75,000 per year on the exact same quoted base rate — is entirely a function of how CAM is defined, capped, and audited in the lease. This is why "is NNN good or bad" is the wrong question. The right question is whether the CAM terms are well negotiated.

Benefits of a Triple Net Lease

The most immediate benefit is a lower quoted base rent than a comparable gross lease, since the tenant is absorbing some of the taxes, insurance, and maintenance costs directly rather than paying the landlord to bundle and mark them up.

Fuller, well-maintained buildings cost less per tenant

Taxes, insurance, and maintenance get divided across more tenants in a low-vacancy building, so your prorated share shrinks. Newer or well-maintained buildings also carry lower ongoing repair costs, which flows directly into a lower CAM bill.

Creditworthiness is real leverage

Landlords favor tenants with a strong financial track record. A solid credit and payment history is a genuine bargaining chip for pushing the base rate down further on an NNN structure.

Drawbacks of a Triple Net Lease

  • Unpredictable repair costs. Unexpected, substantial damage to the property can spike your monthly maintenance obligation with little warning.
  • Co-tenant vacancy risk. If other tenants in the building leave, your prorated share of taxes, insurance, and CAM rises to cover the gap — inspect the health of your fellow tenants before signing, not just the building.
  • No tax deductibility on pass-throughs. The operating expenses you pay under NNN generally go straight to the landlord and typically can't be deducted the way they might be if you owned or directly paid for them yourself.

How to Negotiate an NNN Lease

This is where the real math gets decided. Four negotiation points determine whether your NNN lease lands closer to the "well-negotiated" or "loosely defined" column above:

Get an itemized CAM definition. Request a detailed schedule of what's included at lease signing, not a vague reference to "operating expenses."
Exclude capital improvements from CAM. Roof replacements, structural repairs, and major system overhauls should be the landlord's cost, not passed through as a CAM line item.
Negotiate audit rights. Build in the right to review the landlord's expense reconciliation with reasonable notice, so you have a real check on annual charges.
Cap annual increases. Push for a defined ceiling on year-over-year CAM increases, particularly on controllable expenses like management fees.

For a full comparison of NNN against gross, modified gross, percentage, and other lease structures, see 7 Essential Commercial Lease Types in 2026.

Get the CAM Terms Right Before You Sign

A local tenant rep can review CAM definitions, benchmark them against comparable buildings, and negotiate caps and audit rights on your behalf — at no direct cost to you in most U.S. markets.

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Frequently Asked Questions

Is a triple net lease good or bad for tenants?
Neither inherently — it depends on negotiation. NNN leases typically quote a lower base rent than a gross lease on the same building, but the tenant absorbs property taxes, insurance, and CAM on top. Poorly negotiated CAM terms can add 30 to 100 percent above the quoted base rent, while well-negotiated terms with capped, audited, clearly defined CAM can make an NNN lease genuinely cost-competitive.1
What is the difference between a triple net lease and a gross lease?
In a gross lease, the landlord bundles most operating expenses into one quoted rent figure. In a triple net lease, the tenant pays a lower base rent but pays property taxes, insurance, and CAM separately, on top of that base rent. The gross lease is easier to budget; the NNN lease can be cheaper overall if CAM is well negotiated and defined.
How much does CAM typically add to a triple net lease?
CAM plus taxes and insurance commonly add $2 to $4 per square foot per year on top of base rent in well-run buildings, but loosely defined CAM in an NNN lease can push total occupancy costs 30 to 100 percent above the quoted base rent.1 The variance almost entirely comes down to how precisely CAM is defined and negotiated in the lease.
Can you negotiate the terms of a triple net lease?
Yes, and this is where most of the real risk in an NNN lease gets managed. Tenants can negotiate a detailed, itemized CAM definition, audit rights over annual reconciliations, exclusion of capital improvements from CAM charges, and caps on annual increases to controllable expenses.
References
  1. Visual Lease. Understanding Different Types of Commercial Leases: Exploring Triple Net and Pass-Through Leases.
  2. NAIOP. The Benefits and Risks of Triple Net Leases.
  3. BOMA International. Experience Exchange Report — Operating Expense Benchmarks.
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