Common area maintenance (CAM) charges and operating-expense pass-throughs are a frequent source of commercial lease overbilling. Most tenants pay without verifying the math — leaving recoverable overcharges on the table.
Lease and CAM overcharges are common because operating-expense pass-throughs are rarely audited with the same rigor as the base rent. The short answer: tenants who systematically review CAM calculations, exclusions, and caps typically recover 5–15% of annual occupancy costs through billing errors, improper expense inclusions, and incorrect pro-rata allocations.
CAM charges are the most flexible cost in a commercial lease. Landlords pass through their operating expenses — taxes, insurance, maintenance, utilities, security, and management fees — and tenants often accept the annual reconciliation without scrutiny.
The result is steady escalation: expenses that should be excluded are included, capital improvements are wrongly treated as operating costs, and the tenant's pro-rata share is miscalculated. Because the amounts are spread across monthly payments, the leakage is invisible without a line-item audit.
Confirm only permissible operating expenses are passed through. Capital expenditures, landlord's own marketing, and costs benefiting other properties should be excluded.
Verify your share is calculated against the correct denominator and that your square footage is accurate — a common source of silent overbilling.
Check whether the lease imposes caps on controllable expenses and whether those caps were enforced in the reconciliation.
Confirm the management fee is capped at the lease-stipulated percentage and is not double-counted across line items.
A lease and CAM audit identifies overcharges you may recover now and prevents recurring leakage at every future reconciliation. The first step is a confidential advisory conversation.