Gross Lease vs. Net Lease: Costs and Differences

In a gross lease, the tenant pays one fixed rent and the landlord covers property taxes, insurance, and maintenance out of it. In a net lease, the tenant pays a lower base rent plus some or all of those operating costs directly. The quoted rate tells you almost nothing on its own, because the two structures include different things.

If you are on a real estate team, the useful comparison is total occupancy cost across the full term, not the rate per square foot in the listing. If you are on a finance team, the structure changes what lands on the balance sheet: the same annual cash outlay can produce a lease liability that differs by hundreds of thousands of dollars depending on which parts of the payment are fixed.

On this page:

• Gross lease vs. net lease at a glance
• What is a gross lease
• What is a net lease
• The three types of net lease
• Modified gross: the structure most office leases actually use
• A worked example: the same building under both structures
• Why year three is where they separate
• How each structure lands on the balance sheet
• Which structure favors the tenant
• How to compare two offers fairly
• What to check in the lease before signing
• FAQs

Gross Lease vs. Net Lease at a Glance

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What Is a Gross Lease?

A gross lease bundles the cost of occupancy into one payment. The tenant pays a fixed amount, and the landlord uses it to cover property taxes, building insurance, common area maintenance, and usually structural upkeep. Tenants typically still pay for what happens inside their own space, most often in-suite electricity, janitorial, and their own contents insurance.

The tradeoff is priced in. Because the landlord absorbs the risk that costs rise, the base rent is higher than it would be on a net lease for the same space. For a full breakdown of the variants, see our gross lease explainer.

What Is a Net Lease?

A net lease separates the rent from the operating costs. The tenant pays a lower base rent plus a defined share of the property's expenses. Those extra payments are usually billed monthly as an estimate and reconciled against actual costs after year end, which is where most disputes over CAM charges start.

The share is normally pro rata: the tenant's square footage divided by the building's rentable square footage.

The Three Types of Net Lease

The number of "nets" tells you how many of the three major cost categories the tenant absorbs.

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Triple net is the structure most people mean when they say "net lease." The full mechanics are in our triple net lease guide.

Modified Gross: The Structure Most Office Leases Actually Use

Most office leases are neither purely gross nor purely net. In a modified gross lease, the first year's operating costs are baked into the rent, and that year becomes the base year. From year two, the tenant pays its share of any increase above the base year amount.

Two details decide what this costs. The first is which year is the base year: a base year set during an unusually low-cost year means the tenant absorbs a larger increase in every subsequent year. The second is whether the base year is grossed up to reflect a fully occupied building. If the building was half empty in the base year, ungrossed base year expenses are artificially low, and the tenant pays for the difference as the building fills. Ask for the base year expenses to be grossed up to at least 95% occupancy, and get the number in writing.

A Worked Example: The Same Building Under Both Structures

A 5,000 square foot space, offered two ways.

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In year one these are the same deal. The listing that quotes $21.00 looks 34% cheaper than the one that quotes $32.00, and it is not cheaper at all.

Why Year Three Is Where They Separate

Costs escalate at different rates. Assume base rent rises 3% a year in both leases and operating expenses rise 5% a year, which is a common spread in markets where insurance and taxes are climbing faster than rents.

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The gap is small in year three and it compounds. The point is not that one structure always wins. It is that the comparison only exists once operating costs are modeled forward, and the tenant carrying that risk in a net lease is the one who needs the model.

How Each Structure Lands on the Balance Sheet

This is where the two leases stop being equivalent, and it is the part real estate teams rarely see coming.

Under ASC 842, the lease liability is the present value of the lease payments the tenant is obligated to make. Fixed payments are included. Variable payments that depend on actual costs incurred, which is how most operating cost reimbursements in a net lease work, are excluded from the liability and expensed as incurred.

Take the two leases above, five year term, 7% incremental borrowing rate, payments annually in arrears.

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Same year-one cash cost. A lease liability and right-of-use asset that differ by roughly $225,000. For a company with debt covenants tied to balance sheet ratios, that difference is the whole conversation, and it gets decided when real estate picks a structure, months before finance sees the lease.

Two caveats worth knowing. If operating cost payments are fixed rather than reconciled against actuals, they go into the liability like any other fixed payment. And CAM is generally a non-lease component, which is accounted for separately unless the company has elected the practical expedient to combine lease and non-lease components by class of asset.

Which Structure Favors the Tenant?

Neither, consistently. The structure that fits depends on which risk the business would rather carry.

A gross lease fits when predictability matters more than upside: a business with tight budgets, a small team, no facilities function, or a short expected stay in the space. A net lease fits when the tenant wants control and is willing to underwrite the costs: a single-tenant user who wants a say in maintenance standards and vendor choices, or a tenant with the scale to manage those costs better than the landlord would.

The mistake is assuming the lower quoted rate is the better deal. It reflects a different allocation of risk, not a discount.

How to Compare Two Offers Fairly

• Convert both to total annual occupancy cost per square foot, not base rent.
• Model operating costs forward for the full term, using the property's own history rather than a market average.
• Ask for three years of actual operating expense statements for the building. A landlord who will not provide them is telling you something.
• Check what is excluded. Capital expenditures, roof and structure, and management fees are the usual arguments.
• Compare on effective rent across the full term, after free rent and tenant improvement allowances.
• Confirm which payments are fixed and which are reconciled, because that determines the balance sheet impact.

More on structuring the deal itself is in our commercial rent structure guide, and the full set of structures is in commercial lease types.

What to Check in the Lease Before Signing

• The exact definition of operating expenses, including what is specifically excluded
• Whether a cap applies to controllable expenses, and whether it is annual or cumulative
• Base year and gross-up language in a modified gross lease
• The reconciliation timeline and your right to audit the landlord's numbers
• How the pro rata share is calculated, and whether it uses rentable or usable square footage
• Whether capital expenditures can be passed through, and over what amortization period

Lease terms are negotiated instrument by instrument and the language varies by market, so have counsel review the operating expense provisions before signing.

Why This Matters for Real Estate and Finance Teams Together

A gross lease and a net lease can cost the same in cash and look completely different in the financial statements. Real estate teams choose the structure. Finance teams inherit the consequences at the next close. When the two teams work from separate spreadsheets, the balance sheet effect of a structure decision surfaces after the lease is signed, which is the point at which nothing can be changed.

Occupier keeps the lease terms, the operating cost detail, and the ASC 842 calculations in one system, so the cost model real estate builds and the liability finance books come from the same lease.

One platform. Two teams. Zero compromise.

See how Occupier keeps rent, operating costs, and lease terms in one place →

Gross Lease vs. Net Lease FAQs

What is the main difference between a gross lease and a net lease? In a gross lease the landlord pays the property's operating costs out of a single fixed rent. In a net lease the tenant pays a lower base rent and covers some or all of those operating costs separately.

Is a gross lease more expensive than a net lease? The quoted base rent is higher, but the total cost is often similar, because a net lease adds taxes, insurance, and maintenance on top of the base. The difference shows up over time, since the party paying operating costs carries the risk of those costs rising.

What is a modified gross lease? A hybrid. The first year's operating costs are included in the rent, and that year becomes the base year. From year two, the tenant pays its share of increases above the base year amount.

What is the difference between gross rent and net rent? Gross rent is the all-in amount including operating costs. Net rent is base rent only, with operating costs billed separately. Listings often quote net rent, which is why two offers can look further apart than they are.

Which lease type is better for a small business? Usually a gross lease, because the cost is predictable and there is no facilities function to manage building expenses or audit a landlord's reconciliation.

Do gross and net leases get accounted for differently under ASC 842? The classification test is the same, but the liability differs. Fixed payments go into the lease liability. Operating cost payments that vary with actual costs are excluded and expensed as incurred, so a net lease typically produces a smaller lease liability than a gross lease with the same total cash cost.

Is a triple net lease a type of net lease? Yes. It is the version where the tenant pays all three cost categories: property taxes, insurance, and maintenance.

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