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CAM Gross-Up Calculator

When buildings have vacancies, landlords can “gross up” operating expenses to what they would be at full occupancy — but only up to a lease-specified threshold. Misapplication is one of the most common CAM overcharge patterns.

What is gross-up? When building occupancy falls below a lease threshold (commonly 90%), landlords may normalize operating expenses to what they would cost at full occupancy. This protects tenants from subsidizing vacant space — but only works correctly at the right threshold and for variable (not fixed) expenses.

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Recovery of past CAM overcharges depends on your specific lease terms, including any audit rights deadlines or ‘binding and conclusive’ provisions, and on applicable state law. State statute of limitations periods apply to written contracts and range from 3 to 10 years; your actual lookback window may be shorter based on your lease. CamAudit is a document analysis platform, not a law firm, and nothing on this site constitutes legal advice. Consult a licensed real estate attorney before initiating any dispute or legal proceeding.

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