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One line says gross-up. You want to see the percent next to it. You tap the paper with the end of your pen, squinting to make sure you didn’t misread the fine print tucked between landscaping costs and security patrol fees. You know this line dictates how much of the building’s common area maintenance costs fall to your space, even when other suites sit empty. You keep your original lease terms tucked in the back of your notebook for this exact reason, so you can cross-reference the listed percent against the threshold you agreed to when you signed.
What Gross-Up Covers On This CAM Bill Addendum
You’re looking at the 2024 annual CAM reconciliation addendum attached to your base commercial lease, so the gross-up line only applies to variable common area expenses that fluctuate based on building occupancy. Variable expenses include things like janitorial services, utility costs for shared lobbies and hallways, routine maintenance for shared elevators and HVAC systems, and seasonal costs like snow removal and parking lot striping that change depending on how much the common areas are used. Fixed CAM expenses like property taxes, building insurance, permanent structural repairs, and annual property management fees never get grossed up, so you won’t see those included in the calculation on this line. The percent listed ties directly to the building’s stated occupancy threshold that triggers the gross-up rule, which you negotiated when you signed your original lease three years ago, so any number that deviates from that agreed threshold is worth double-checking before you sign off on the total CAM charge for the year.
How Gross-Up Calculations Work For Your Leased Space
Gross-up adjusts variable CAM costs to reflect what they would be if the building was at its standard occupancy rate, usually between 90 and 95 percent, so that tenants don’t cover extra costs caused by high vacancy rates instead of the landlord absorbing that gap. The calculation accounts for the fact that many variable costs drop when fewer people use the common areas: janitorial teams clean less frequently, utility use drops in empty hallways, and maintenance calls for shared amenities fall when there are fewer tenants in the building. Illustrative example: if the building is 70 percent occupied for the full year, and the agreed gross-up threshold is 95 percent, variable expenses are multiplied by 1.36 (95 divided by 70) to get the grossed-up total that gets allocated across all occupied suites. Your pro-rata share of the building, which is 8 percent based on your 12,000 square feet of space in the 150,000 square foot building, is applied to that grossed-up variable cost total to get your portion of CAM expenses for the year. If the building is already at or above the gross-up threshold, the percent next to the gross-up line will be 100, meaning no adjustment is applied to the variable expenses, and you only pay your standard pro-rata share of those costs.
When You Can Adjust The Stated Gross-Up Percent
Before you sign off on this CAM bill, you can cross-reference the listed gross-up percent with your lease terms and documented building occupancy to request an adjustment if the number doesn’t align. Most property managers allow adjustments for clear, documented discrepancies, as long as you submit your request within the 30-day review window outlined on the first page of this addendum. The table below outlines the most common scenarios that qualify for an adjustment, the documentation you need to submit with your request, and the typical timeline you can expect for a resolution:
| Scenario | Required Documentation | Expected Adjustment Timeline |
|---|---|---|
| Stated gross-up percent is above 100, with no documented drop in building occupancy below the threshold in your lease | Copy of your lease’s gross-up clause, 2024 monthly building occupancy reports provided by your property manager | 10 business days from submission of your formal request |
| Gross-up is applied to fixed expenses like property taxes or building insurance instead of only eligible variable costs | Line-item breakdown of CAM expenses with incorrectly grossed-up fixed costs highlighted, section of your lease listing expenses excluded from gross-up | 14 business days from submission of your formal request |
| Gross-up threshold used on the bill is lower than the percentage agreed to in your original lease terms | Signed copy of your original lease’s CAM terms with the agreed threshold highlighted, current bill’s listed threshold noted | 7 business days from submission of your formal request |
You don’t need to wait for the end of the 30-day window to flag a discrepancy if you notice the error while reviewing the bill today; you can send a short, polite note to your property manager with the supporting documents attached to start the review process as soon as you confirm the mismatch.
Why Gross-Up Rules Prevent Unexpected Cost Spikes
Without a gross-up clause in your lease, you could be on the hook for a much larger share of variable CAM costs if the building experiences high vacancy for an extended period, even though you only occupy a small portion of the total square footage. For example, if 60 percent of the building’s suites are empty, the landlord might try to pass 100 percent of the remaining variable costs on to the occupied tenants, forcing you to pay two and a half times your normal share just to cover the gap from unrented space. The gross-up rule caps your share of variable costs to the amount you would pay if the building hits its standard occupancy rate, even when vacancy is higher, so you never end up subsidizing the landlord’s lost rental income from empty suites. This aligns costs with actual use: if you only use 8 percent of the common areas, you never pay more than 8 percent of the cost of running those common areas at normal occupancy levels, regardless of how many other tenants move in or out during the year. Many commercial lease gross-up terms also protect you if occupancy is unusually high, by capping your total variable CAM contribution to your pro-rata share even if the building is over 100 percent occupied for short periods from temporary pop-up tenants or event rentals that drive up utility and janitorial costs. If you need to cross-reference your lease’s original gross-up terms against the current bill, you can pull up your stored lease copy in Lease Jacket to confirm the agreed threshold without digging through physical file folders.
Next Time You Pull Out This CAM Bill For Review
Next time you pull this CAM bill out, you’ll already have your lease terms cross-referenced, so you can skip straight to checking if the property manager applied the agreed adjustment to the line items you flagged today. You’ll compare the updated total to the preliminary number you jotted in the left margin of this bill when you first reviewed it, to make sure the adjustment was applied correctly to only variable expenses and not incorrectly extended to fixed costs like property taxes or insurance. You’ll also be able to use this bill as a reference point when you review next year’s CAM reconciliation, to compare how changes in building occupancy impacted the gross-up percent across both years, and to spot any patterns in how the property manager calculates these adjustments over time. If you’ve already signed off on the bill by that point, you can staple the adjustment confirmation email from your property manager to the back of this page for your records, so you have all related documentation in one place if you need to reference it during lease renewal negotiations in two years. You’ll also note any changes to the gross-up threshold that you want to negotiate during that renewal process, right on the blank margin at the bottom of this page, so you don’t forget to bring it up when you sit down with your landlord to discuss updated terms. You can also use this bill to walk through CAM cost calculations with your finance team, so everyone on your staff understands how these charges are calculated and what to look for when reviewing future billing documents.