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Commercial Lease Gross Up Clause Examples and How They Work
Last Updated: November 11, 2026
Quick Summary
A gross up clause is a lease provision that adjusts variable operating expenses in a multi-tenant building as if the building were occupied at a fixed level, usually 95% or 100%. Landlords use it so tenants' shares of shared costs are not inflated by a half-empty building. Tenants should confirm the occupancy percentage, expense exclusions and recovery cap before signing.
Gross up applies only to variable expenses such as HVAC electricity, janitorial service and trash removal.
Worked example: $400,000 variable costs at 70% occupancy with a 95% target adds $14,286 to a 10% tenant's charge.
The added charge grows as occupancy falls, reaching $36,000 at 50% occupancy in the same example.
Fixed costs like property taxes and insurance should be excluded from the gross-up adjustment.
Request a reconciliation showing actual expenses, actual occupancy, target occupancy and the credit applied.
Table of Contents
What a Commercial Lease Gross Up Clause Is
A commercial lease gross up clause is a provision that adjusts variable operating expenses in a multi-tenant building as if the building were occupied at a fixed level, usually 95% or 100%. The landlord uses the adjusted figure to calculate each tenant's share of shared costs. Without it, a building that is only half leased would push the full cost of variable services onto the tenants who are present.
The clause matters most in leases where tenants pay a pro rata share of operating expenses above a base year or expense stop. It determines how much of a building's utility, janitorial and service costs flow through to each tenant, so a reader reviewing a lease should locate it before anything else in the expense section.
Why Landlords Use Gross Up Provisions
Landlords use gross-up provisions to protect their recovery of operating costs when occupancy falls. Some expenses, such as electricity for HVAC, janitorial service and trash removal, rise with the number of people using the space. If a building is 60% occupied, the actual bills reflect 60% usage, but a landlord without a gross-up would be unable to recover the cost of the other 40% from the tenants who are paying their share.
The mechanism lets the landlord charge tenants as though the building were fully occupied, then credits back the portion that was never actually consumed. Tenants should expect this to be standard in many office and retail leases, which is why the negotiating points discussed later matter so much.
How to Calculate 95% Gross Up on Operating Expenses
A gross-up calculation has four inputs: the actual variable expense pool, the actual occupancy rate, the target occupancy rate in the lease (usually 95% or 100%), and the tenant's proportionate share. The formula itself is simple. The errors tend to occur in the inputs and in the credit step.
The Core Formula
Grossed-up variable expenses = Actual variable expenses × (Target occupancy ÷ Actual occupancy)
The tenant's share of the adjusted pool is then:
Tenant charge = Grossed-up variable expenses × Tenant's proportionate share
If the landlord's actual recovery exceeds the actual expenses, the difference must be credited back to the tenant under a properly drafted clause.
Worked Example
Assume a 100,000-square-foot office building with the following figures for the calendar year:
Actual variable expenses (electricity for HVAC, janitorial, trash removal): $400,000
Actual occupancy: 70%
Target occupancy in the lease: 95%
Tenant's proportionate share: 10% (a 10,000-square-foot tenant)
Step 1: Gross up the variable pool. $400,000 × (95% ÷ 70%) = $542,857
Step 2: Calculate the tenant's share of the grossed-up pool. $542,857 × 10% = $54,286
Step 3: Calculate what the tenant would owe without the gross-up. $400,000 × 10% = $40,000
The gross-up therefore adds $14,286 to this tenant's annual charge. Note that the landlord's total recovery from all tenants could exceed $400,000 because the grossed-up pool is shared, which is exactly why the credit provision matters. If actual occupancy is 70%, the landlord's actual cost is $400,000, and any recovery above that figure must be credited back.
Sensitivity to Occupancy
The gross-up effect grows as occupancy falls. Using the same $400,000 variable pool and 95% target:
At 95% actual occupancy: grossed-up pool $400,000; tenant share $40,000; added charge $0
At 85% actual occupancy: grossed-up pool $447,059; tenant share $44,706; added charge $4,706
At 70% actual occupancy: grossed-up pool $542,857; tenant share $54,286; added charge $14,286
At 50% actual occupancy: grossed-up pool $760,000; tenant share $76,000; added charge $36,000
The pattern shows why tenants in a half-empty building can face disproportionate charges, and why a negotiated occupancy cap matters more as vacancy rises.
Common Calculation Errors
Watch out: applying the gross-up to fixed costs such as property taxes or insurance inflates the pool without any link to occupancy, so verify the variable/fixed split line by line.
Watch out: changing the occupancy basis between years, for example using a year-end snapshot one year and an average the next, makes the reconciliation impossible to compare. Ask the landlord to state the method in writing.
Watch out: failing to apply the credit step means the landlord recovers more than it spent. Check that the reconciliation shows total recoveries alongside total actual expenses.
What to Request from the Landlord
Ask for a reconciliation that lists actual expenses by category, the actual occupancy used, the target occupancy stated in the lease, the grossed-up figure for each category, and the credit applied. If the landlord cannot produce these items, the reconciliation deserves an audit under the lease's audit provision.
The gross-up calculation follows a short sequence of steps, and the sensitivity to occupancy is easiest to see side by side.
Occupancy scenario | Grossed-up pool | Tenant share | Added charge |
95% actual occupancy | $400,000 | $40,000 | $0 |
85% actual occupancy | $447,059 | $44,706 | $4,706 |
70% actual occupancy | $542,857 | $54,286 | $14,286 |
50% actual occupancy | $760,000 | $76,000 | $36,000 |
Gross Up Clause Examples for Different Lease Scenarios
Sample gross-up language is not one-size-fits-all. The wording depends on the lease structure, the property type, and how the landlord's operating expense pool is defined. The three examples below are starting points for review and negotiation, not forms to sign as written. Each one is followed by plain-English annotations and drafting caveats.
Example 1: Multi-Tenant Office Lease (Full-Service Gross or Modified Gross)
"Variable Operating Expenses for any Calendar Year shall be grossed up to reflect the amount that would have been incurred had the Building been ninety-five percent (95%) occupied during such Calendar Year. Fixed Operating Expenses shall not be grossed up. Landlord shall not recover, in the aggregate, more than the actual Operating Expenses paid or incurred by Landlord."
Annotations: The first sentence defines the adjustment and names the occupancy assumption. The second sentence is the critical exclusion that keeps taxes and insurance out of the adjustment. The third sentence is the tenant protection against double recovery.
Caveat: Watch out for the phrase "Variable Operating Expenses" if it is not defined elsewhere in the lease. An undefined term invites the landlord to decide case by case which costs qualify.
Example 2: Retail Center Lease with Shared CAM
"Common Area Maintenance Costs that are reasonably expected to vary with the number of occupants of the Shopping Center, including utilities for common areas and common area janitorial services, shall be adjusted as if the Shopping Center were one hundred percent (100%) occupied.
Annotations: Retail leases often reference Gross Leasable Area rather than rentable square feet, so the denominator must be stated. The credit sentence is what turns the adjustment into a true gross-up rather than a surcharge.
Caveat: Confirm whether the 100% assumption applies to the whole center or only to the building in which the premises sit. Multi-building centers frequently differ on this point.
Example 3: Single-Tenant or Net Lease Carve-Out
"In the event the Building is less than fully occupied during any Calendar Year, Tenant's obligation for Variable Operating Expenses shall be determined as though the Building were ninety percent (90%) occupied, provided that Tenant's obligation shall not exceed Tenant's Proportionate Share of the actual Variable Operating Expenses incurred."
Annotations: This language limits the gross-up to a lower occupancy assumption and adds a hard ceiling tied to actual costs, which is a useful fallback for tenants.
Caveat: In a triple net lease the tenant often bears most costs directly, so a gross-up clause may matter only for the building-wide items the landlord allocates. For a side-by-side look at triple net and gross leases for a small office, see that comparison. Check whether the clause applies to all expenses or only to a defined subset.
Drafting Points Across All Examples
Before accepting any sample language, confirm that the occupancy percentage is stated as a number rather than as "reasonable occupancy," that the lease defines which expenses are variable, and that the recovery cap refers to actual expenses. Those three elements do most of the work in any gross-up clause.
Tenant-Side Gross-Up Controls and Fallback Language
Tenants can negotiate several controls that reduce exposure under a gross-up. Useful requests include:
A cap on the occupancy assumption, such as limiting the gross-up to actual occupancy plus a defined variance.
An express exclusion list for capital items and non-recoverable costs.
A statement that the gross-up cannot produce recovery above actual expenses.
Audit rights tied to supporting invoices, not just summary statements.
If the landlord rejects a 95% assumption, a fallback can accept a lower percentage, such as 90%, in exchange for stronger audit rights. Tenants should avoid agreeing to an open-ended occupancy standard, because it leaves the calculation to the landlord's discretion. For the broader negotiation of tenant improvement allowances alongside gross-up concessions, the steps are set out in a separate guide.
Commercial Lease CAM Reconciliation and Audit Rights
Common area maintenance (CAM) reconciliation is the annual process of comparing estimated tenant payments with actual operating expenses. Gross-up adjustments flow into this reconciliation, which is why tenants should review both together.
Strong audit rights let a tenant request supporting documentation within a set period, usually 90 to 180 days after receiving the statement. The lease should also specify who pays for an audit and under what circumstances the landlord must credit an overcharge. Without these terms, a gross-up can quietly inflate the tenant's share year after year.
Reviewing Your Gross Up Clause Before You Sign
Before signing, locate the gross-up provision and check four things: the occupancy percentage, the list of expenses subject to adjustment, the exclusions, and the cap on recovery. Then ask the landlord to provide a sample reconciliation from a comparable building so you can see how the mechanics work in practice.
Many tenants find that a short review by a commercial real estate professional catches issues that are easy to miss in a long lease. Schedule an initial consultation with TheRayMartinAgency to walk through your lease and identify the provisions that need attention before you sign.
Frequently Asked Questions
What is a gross-up clause in a commercial lease?
A gross-up clause is a lease provision that adjusts variable operating expenses as if the building were occupied at a set level, usually 95% or 100%, even when actual occupancy is lower. The landlord uses this adjusted figure to set the expense amounts that tenants share. Because the clause changes how shared costs are divided, tenants should read the occupancy assumption, the list of expenses covered, and how the adjustment is reconciled each year before signing.
Why do landlords include gross-up provisions in leases?
Landlords use gross-up provisions so that variable costs such as janitorial services, utilities and trash removal do not fall on the building owner when vacancy is high. Without the clause, a building that is 60% occupied would spread variable costs across fewer tenants, which lowers the landlord's recovery. The provision keeps expense recovery closer to what a fully occupied building would produce.
How is a 95% occupancy gross-up calculation performed?
Identify the variable operating expenses for the year, then divide them by the actual occupancy percentage and multiply by 95%. Fixed expenses such as real estate taxes and building insurance are excluded from the adjustment. For example, if variable expenses are $300,000 and occupancy is 80%, the grossed-up variable figure is $300,000 divided by 0.80, multiplied by 0.95, or $356,250. Tenants should ask for the calculation and supporting invoices.
What should tenants look for in a gross-up clause?
Tenants should confirm the occupancy assumption, which expenses are subject to gross-up, whether any expenses are excluded, and whether the landlord can recover more than actual costs. Look for audit rights, a time limit for reconciliation statements and language that prevents double recovery. Ask for an expense cap if the lease allows one. A short review with a commercial real estate attorney before signing can catch unfavorable wording.
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