Gross Lease vs Triple Net (NNN): Which One Actually Saves Me Money?
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Gross Lease vs Triple Net (NNN): Which One Actually Saves Me Money?
Neither is automatically cheaper — but a gross lease usually protects you better, and triple net (NNN) almost always costs more than the quoted rate suggests. With a full-service gross (FSG) lease, the landlord bakes taxes, insurance, and maintenance into one number, so a $32/sq ft gross rate is what you actually pay.
With triple net (NNN), the quoted base rent looks low — say $22/sq ft — but you then pay the "NNN load" of taxes, insurance, and common area maintenance on top, which runs $8 to $20/sq ft and rises every year with no ceiling unless you negotiate one. The money move: compare the fully-loaded, all-in number, not the face rate, and if you take NNN, cap the controllable expenses so the landlord can't pass through gold-plated costs.
A "cheap" $22 NNN deal is often a $38 to $42/sq ft deal once you add the load.
The Three Lease Structures, Decoded
- Full-Service Gross (FSG): One rent number covers base rent plus taxes, insurance, CAM, and often utilities/janitorial. Predictable. You're exposed only through the "base year" expense stop (more below).
- Modified Gross (MG): A middle ground — base rent includes some operating costs, but you pay others directly (often your own electric and janitorial). Read the term sheet carefully: "modified" can mean almost anything.
- Triple Net (NNN): Base rent is net of the three "nets" — property taxes, building insurance, and CAM — all of which you pay separately, pro-rata to your share of the building. Industrial and retail are almost always NNN; office is often gross.
The screw: brokers advertise the lowest possible face number to make a space look competitive. On NNN listings that face number is meaningless without the load. Always ask: "What are the current NNN charges per square foot, and what were they last year?"
Run the All-In Math Before You Compare
Take a 5,000 sq ft suite, two real offers:
| Gross offer | NNN offer | |
|---|---|---|
| Quoted rate | $34/sq ft FSG | $24/sq ft NNN |
| NNN load | included | + $13/sq ft |
| All-in $/sq ft | $34 | $37 |
| Annual cost (5,000 sq ft) | $170,000 | $185,000 |
The "cheaper" $24 NNN deal costs $15,000 more per year. And the gross number is fixed-ish; the NNN load escalates annually. Over a 5-year term that gap compounds into real money.
Where Each Structure Hides the Risk
Gross lease risk — the "base year" and expense stops. In FSG, the landlord covers operating costs up to a base-year amount. If building expenses rise above that base, you pay your pro-rata share of the increase. Traps:
- A "gross-up" clause lets the landlord calculate the base year as if the building were 95% to 100% occupied, artificially lowering your base and raising your future pass-throughs. Negotiate the gross-up to be applied consistently to both the base year and comparison years.
- A low/artificial base year in a brand-new building means expenses only go up. Push for the first full calendar year of stabilized operation as the base.
NNN risk — uncapped, unaudited pass-throughs. You are paying actual costs the landlord controls. Without protections you can be billed for:
- Capital improvements disguised as maintenance (a new roof or HVAC plant billed as "repairs").
- Management fees of 4% to 5% of all operating costs.
- Administrative fees of 10% to 15% stacked on top of CAM.
The Money Moves That Actually Save You
- Demand audit rights. Get the contractual right to audit the landlord's books within 90+ days of the annual reconciliation, with the landlord paying for the audit if it finds an overcharge above 3% to 5%.
- Cap controllable CAM at 3% to 5% annually (see the dedicated trap below). Taxes and insurance are usually "uncontrollable" and harder to cap, but everything else should be capped.
- Exclude capital expenditures from pass-throughs, or amortize them over their useful life so you pay only the slice you used.
- Cap the management fee at 3% and strike the admin fee entirely.
- On gross deals, lock the base year and the gross-up methodology in writing.
Which One Wins for Your Situation
- Choose gross/FSG if you want predictability, you're a smaller tenant without staff to audit reconciliations, or you're in a stable older building where expense surprises are limited.
- Choose NNN if you have negotiating leverage to cap and exclude costs, you're in a well-run building, or you're an industrial/retail tenant where NNN is the only option — and you've done the all-in math and locked the protections.
- Never choose based on the face rate. The face rate is marketing. The all-in, capped, audited number is the deal.
The single best protection in either structure: an expense exclusions list in the lease that names what the landlord cannot pass through — capital costs, leasing commissions, the landlord's financing, costs covered by warranty or insurance, and improvements for other tenants.
That one paragraph saves more money than any rate negotiation.
FAQ
Is triple net always more expensive than gross? No — but the quoted NNN rate is always misleading because it excludes $8 to $20/sq ft of load. Once you add taxes, insurance, and CAM, NNN often lands at or above a comparable gross deal. Compare all-in.
What does the "base year" mean in a gross lease? It's the expense baseline the landlord covers. You pay your pro-rata share of any operating-cost increases above that base in later years. A favorable base year (full, stabilized) limits your future exposure.
Can I cap NNN charges? You can cap the controllable portion — CAM, management, repairs — typically at 3% to 5% per year, cumulative and compounding. Taxes and insurance are usually uncontrollable and harder to cap, but everything else should have a ceiling.
What's the difference between modified gross and full-service gross? Full-service gross includes essentially all operating costs in one number. Modified gross includes some and leaves others (often utilities and janitorial) for you to pay directly. Always confirm exactly what's in and out.
How do I avoid getting overbilled on NNN reconciliations? Negotiate audit rights, a cap on controllable expenses, an exclusions list for capital and landlord costs, and a remedy (refund plus the landlord paying audit costs) if an audit finds an overcharge above a threshold.