Commercial lease audit services help tenants verify that the charges billed by their landlord comply with the terms of their lease agreement. For tenants paying common area maintenance (CAM) charges, operating expenses, or triple net pass-throughs, an audit can uncover billing errors that accumulate year after year.
What Is a Commercial Lease Audit?
A commercial lease audit is a systematic review of every charge a landlord passes through to a tenant under the operating expense or CAM provisions of their lease. The auditor compares each line item on the landlord's CAM reconciliation statement against the specific terms defined in the lease agreement.
The audit examines whether each expense category is permitted, whether calculations are correct, and whether any caps or limits defined in the lease have been exceeded. The result is a detailed report identifying potential overcharges and the estimated financial impact.
Why Tenants Perform Audits
Most commercial tenants never review their CAM charges in detail. This is understandable — reconciliation statements are complex, and tenants are focused on running their businesses. However, studies consistently show that a significant percentage of reconciliation statements contain errors that favor the landlord.
Common reasons tenants initiate an audit include:
- A noticeable increase in CAM charges from one year to the next without a clear explanation
- Receiving a large reconciliation adjustment after paying estimated charges all year
- Discovering that other tenants in the same property are paying different rates
- Reviewing the lease and realizing certain charges may be excluded
- Exercising audit rights included in their lease agreement
Common Billing Discrepancies
Lease audits frequently uncover the same types of billing errors. These are not always intentional — many result from accounting mistakes, software errors, or misinterpretation of lease terms. The most common discrepancies include:
- Management fee overcharges — Administrative fees billed at a higher percentage than the lease permits
- Incorrect pro rata share — The tenant's proportionate share calculated using wrong square footage figures
- Excluded expenses billed — Costs the lease specifically excludes from CAM appearing on the reconciliation statement
- Capital expenditures passed through — Capital improvements charged as operating expenses when the lease prohibits it
- CAM cap violations — Annual charges exceeding the CAM cap defined in the lease
For a deeper look at these issues, see our guide to common CAM overcharges tenants miss.
How Automated CAM Audits Work
Traditional lease audits require hiring a consultant or CPA who manually reviews lease documents and reconciliation statements. This process can take weeks and cost thousands of dollars.
Automated CAM audit tools like LeaseGuard streamline this process. The tenant uploads their lease PDF and one or more reconciliation statements. The system extracts key lease provisions — CAM caps, admin fee limits, excluded expense categories, and pro rata share terms — then compares each billed charge against those provisions.
The result is a findings report delivered in about 60 seconds, identifying potential discrepancies with estimated savings. For tenants who want to understand the full process, our step-by-step CAM audit guide covers everything from document preparation to reviewing findings.