Gross Lease

True Gross Leases Include All Operating Expenses in the Rent

In a pure gross lease, the tenant pays a single monthly rent that covers everything: the landlord's mortgage, property taxes, insurance, maintenance, management, and utilities (depending on the lease). The landlord assumes all the risk that operating costs might rise — if property taxes increase 15% next year, that's the landlord's problem. True gross leases were historically common in office buildings, where landlords wanted to compete on a single all-inclusive rent figure. Today, pure gross leases are increasingly rare — most 'gross' leases have evolved into modified gross leases with explicit expense pass-throughs.

Modified Gross Leases Pass Some Expenses to Tenants Despite the Name

A modified gross lease typically includes a base rent that covers most expenses but excludes specific pass-throughs — commonly utilities (each tenant pays their own electric and gas), property tax increases above a base year, or insurance cost increases. The exact expenses passed through vary by lease and market. An office tenant paying $32/sq ft 'gross' might also pay their own electricity ($3–$5/sq ft/year), parking ($150/month), and property tax increases above the lease-execution year baseline. These additional costs can add $8–$12/sq ft annually, substantially increasing the effective rent above the quoted gross rate.

Gross Leases Shift Volatility Risk to the Landlord — That Has Value

The main advantage of a gross lease is predictability. Your monthly rent doesn't change because of a harsh winter driving up heating costs, a property tax reassessment, or an insurance rate increase. That predictability has real financial value for budget planning, especially for small businesses. In exchange, gross leases typically have higher base rent than comparable NNN leases — the landlord is charging a premium for absorbing operating cost volatility. The question is whether the gross rent premium is greater or less than the actual expense pass-throughs you'd face in a comparable NNN lease. In inflationary environments, NNN tenants often pay more than they anticipated.

Utilities Are the Most Common Gross-to-Modified-Gross Conversion

The most common element stripped out of 'gross' leases to make them 'modified gross' is utilities — specifically electricity. Multi-tenant buildings where each suite has separate utility metering can easily separate utility costs by tenant. For an office tenant occupying 3,000 sq ft and running 15 workstations, electricity costs might run $400–$600/month — $4,800–$7,200/year in costs that would be included in a true gross lease but are passed through in a modified gross lease. Before signing any gross lease, get explicit confirmation of exactly which utilities are included and which you're responsible for.

Even Gross Leases Often Have Operating Expense Escalations After Year One

Many gross leases include an 'expense stop' or 'base year' provision. The gross rent covers operating expenses up to the base year level. Any increase in operating expenses above that level is passed through to you as additional rent. This converts a gross lease into something approaching an NNN lease after year one — you're paying the base year expenses in your gross rent, then paying for every dollar of increase above that level. On a building with $800,000 in annual operating expenses and a tenant occupying 10% of the space, a 10% increase in operating costs means $8,000/year in additional expense stop charges passed to that one tenant.

Gross Lease Is a Starting Point, Not a Final Answer

When your broker tells you a space is available 'gross,' treat that as the beginning of the analysis, not the end. Ask: what expenses are included in the gross rent? Which expenses are passed through regardless? Is there an expense stop or base year provision? Are property taxes included fully or subject to pass-through if the property is reassessed? What utilities are included — specifically water, electric, gas, internet? Is parking included or additional? What's the management fee structure? A thorough understanding of what 'gross' means in a specific lease requires reading the full expense section — not just accepting the broker's characterization.