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A full service gross lease, also called a full-service lease or full-service gross, is a commercial lease in which the quoted rent already includes most or all of the building's operating expenses, such as property taxes, insurance, common area maintenance, utilities, janitorial service, and property management. The tenant pays a single quoted rate per square foot, and the landlord pays the operating costs out of that rent. Full service gross leases are most common in multi-tenant office buildings, and they are usually paired with a base-year expense stop so the landlord is protected from rising costs over the term.
What a full service gross lease means
A full service gross lease is built around a simple idea: the tenant pays one number and the landlord takes care of the rest. The quoted rent is meant to cover the cost of occupying the space and the cost of running the building, bundled into a single rate per square foot. Rather than receiving separate bills for property taxes, insurance, cleaning, and utilities, the tenant pays one consistent amount, and the landlord uses that rent to pay the building's operating expenses as they come due.
This structure stands in contrast to net leases, where the tenant pays a lower base rent and then pays operating expenses separately on top of it. In a full service gross lease, those operating costs are folded into the rent from the start. The appeal for tenants is clarity, since a company can budget around one figure without tracking a series of variable charges. The appeal for landlords is control and a higher headline rate, since the quoted rent reflects both the space and the services that come with it.
Because operating costs rise over a multi-year term, a full service gross lease rarely leaves the landlord exposed to every future increase. Instead, the lease usually sets a base year and a stop. The landlord absorbs operating expenses up to the level recorded in the base year, and the tenant pays its pro rata share of any increases above that level in later years. These amounts are often called expense escalations or pass-throughs. The result is a lease that feels simple to the tenant in the early years while still protecting the owner as costs climb.
Why the full service gross lease matters in commercial real estate
The full service gross lease matters because it shapes how risk, predictability, and pricing are shared between landlord and tenant. The choice of structure influences the headline rent, the way operating costs flow, and the administrative work each side carries. In the office sector especially, the full service gross lease is the default expectation, so understanding it is essential for anyone leasing, owning, or valuing office space.
For tenants, the central benefit is predictability. A single quoted rate makes budgeting straightforward and removes the burden of reconciling multiple expense bills, with escalations limited to a defined share of increases above the base year. This simplicity is one reason the structure remains popular among office tenants.
For landlords, the full service gross lease supports a higher quoted rent and keeps control of building services in the owner's hands. Because the landlord is responsible for cleaning, maintenance, and utilities across the property, it can deliver a consistent experience to every tenant. The base year stop is what makes this workable over time, since it lets the owner offer a clean, attractive rate while still passing future cost growth through to tenants.
The structure also affects valuation and comparison. Because a full service rate already contains operating expenses, it is not directly comparable to a net rate that excludes them. Owners and tenants who treat the two as interchangeable can misjudge the true cost of a space, so the full service gross lease matters not only as a contract but as a unit of measurement that has to be translated carefully.
How a full service gross lease works
The mechanics of a full service gross lease follow a consistent pattern, even though the specific numbers and definitions vary from one building to the next.
What the quoted rent covers
The quoted rent is designed to include the building's operating expenses along with the cost of the space itself. The landlord uses the rent to pay property taxes, building insurance, common area maintenance, utilities, janitorial service, and property management, and handles the operating bills behind the scenes. Some services tied specifically to a tenant's space, such as after-hours heating and cooling or supplemental power, may fall outside the bundled rent and be billed separately, so the lease should spell out exactly where the line sits.
The base-year expense stop
To protect the landlord from rising costs, a full service gross lease is usually paired with a base-year expense stop. The base year is typically the first full calendar year of the term, and its total operating expenses set the threshold the landlord continues to cover. In every year afterward, the landlord absorbs that base year amount, and the tenant pays its pro rata share of any operating expenses that exceed it. The tenant's share is generally its rentable square footage divided by the building's total rentable area, so a tenant occupying ten percent of a building carries roughly ten percent of the increase above the base year.
Expense escalations and gross-up
The amounts a tenant pays above the base year are the expense escalations, billed in addition to the rent, and landlords usually bill monthly estimates and reconcile against actual costs after year end. A gross-up provision keeps these escalations fair when a building is not fully occupied. Many operating expenses, such as janitorial service and utilities, vary with occupancy, so a base year measured during low occupancy would understate normal costs. A gross-up adjusts variable expenses as if the building were fully or nearly fully occupied, often at 95 or 100 percent, in both the base year and later years, which keeps the year-over-year comparison consistent.
Key takeaways
- A full service gross lease bundles most operating expenses into one quoted rent, so the tenant pays a single rate and the landlord covers the operating costs.
- A base-year expense stop protects the landlord, with tenants paying their pro rata share of expense increases above the base year level.
- A full service rate is not directly comparable to a net rate, so both should be converted to the same basis before they are compared.
What is included in the rent
The categories below are the operating expenses most often folded into the quoted rent of a full service gross lease. The exact list is defined by the lease, so tenants should confirm which items are included and which are billed separately.
- Property taxes, the real estate taxes assessed on the building, which the landlord pays out of the rent up to the base year level.
- Building insurance, the property and liability coverage on the structure and common areas, carried by the landlord as part of operating expenses.
- Common area maintenance, the upkeep of shared spaces such as lobbies, corridors, elevators, restrooms, and parking, often abbreviated as CAM.
- Utilities, electricity, water, gas, and similar services for common areas and, in many office leases, for the tenant spaces during standard building hours.
- Janitorial and cleaning service, regular cleaning of common areas and tenant suites, including trash removal and supplies.
- Property management, the cost of managing the building, including staff, administration, and the day-to-day operation of building systems.
- Routine building maintenance, the ongoing repair and servicing of base building systems such as heating, cooling, and life safety equipment.
Comparing lease types
The table below shows how responsibility for common operating expenses shifts across the three structures tenants encounter most often. A full service gross lease keeps these costs inside the rent, a modified gross lease splits them, and a triple net lease pushes them out to the tenant. The base year stop is what carries later increases through to tenants in the full service structure.
| Expense | Full service gross | Modified gross | Triple net (NNN) |
|---|---|---|---|
| Property taxes | Landlord, in rent to base year | Often split or shared | Tenant, paid directly |
| Building insurance | Landlord, in rent to base year | Often split or shared | Tenant, paid directly |
| Common area maintenance | Landlord, in rent to base year | Often split or shared | Tenant, paid directly |
| Utilities | Landlord, in rent for standard hours | Tenant often pays own use | Tenant, paid directly |
| Janitorial service | Landlord, in rent | Often tenant for own suite | Tenant, paid directly |
| Quoted base rent | Highest, all-in | Middle ground | Lowest, plus expenses |
The pattern is clear. As you move from full service gross to modified gross to triple net, the quoted base rent falls, but the tenant takes on more of the operating expenses directly. A modified gross lease sits in the middle, splitting costs in ways that vary from deal to deal. Because the headline rent moves in the opposite direction from the tenant's expense responsibility, comparing leases by base rent alone is misleading, and the structure has to be read alongside the number.
Best practices and what to compare
Tenants get the most from a full service gross lease by reading the structure as carefully as the rate. The most valuable step is to convert any space being considered to a common basis. To compare a full service rate to a net rate, add the estimated operating expenses per square foot to the net base rent to reach an effective gross figure. Comparing only the headline numbers will favor the net lease even when the true cost is similar or higher, so the conversion is essential to a fair decision.
Beyond the comparison, tenants should examine the base year and the stop with care, since these terms govern exposure for the entire term. A base year that reflects a normal, fully operational year gives a fair starting point, while a base year set during a period of unusually low costs creates a low threshold that triggers escalations quickly. Requesting a gross-up provision protects against an understated base, and tenants benefit from negotiating a cap on controllable expense growth and from securing the right to review the landlord's records at reconciliation.
Landlords, for their part, build trust by keeping clean records, applying gross-up and cap provisions exactly as written, and producing reconciliations that tie every charge back to its source. Both sides also benefit from confirming, in writing, which services are bundled into the rent and which are billed separately.
Frequently asked questions
What is a full service gross lease?
A full service gross lease is a commercial lease in which the quoted rent includes most or all of the building's operating expenses, such as property taxes, insurance, common area maintenance, utilities, janitorial service, and management. The tenant pays one bundled rate and the landlord covers those costs out of the rent. It is most common in multi-tenant office buildings and is usually paired with a base-year expense stop.
What does the rent cover in a full service gross lease?
The quoted rent in a full service gross lease typically covers property taxes, building insurance, common area maintenance, utilities, janitorial and cleaning service, and property management. The tenant generally still pays for items unique to its own space, such as after-hours HVAC, supplemental power, or specialized services, which are billed separately as the lease defines them.
How does a full service gross lease differ from a net lease?
In a full service gross lease, the landlord pays the operating expenses out of a single bundled rent, so the tenant sees one quoted rate. In a net lease, the tenant pays a lower base rent and then pays operating expenses separately on top of that rent. A triple net lease pushes taxes, insurance, and common area maintenance directly to the tenant, while a full service gross lease keeps those costs inside the rent until a base year stop passes later increases through.
How do you compare a full service rate to a net rate?
To compare a full service rate to a net rate, convert both to the same basis. Add the estimated operating expenses per square foot to the net base rent to reach an effective gross figure, or subtract operating expenses from the full service rate to reach an effective net figure. Comparing only the headline numbers is misleading, because a full service rate already includes costs that a net rate adds on top.