Printable checklist

CAM Audit Checklist for Landlords and Tenants

A tenant’s audit right is usually a few lines in the lease, and the first audit request rarely arrives when you are ready for it. Use this checklist before you send a reconciliation, when a tenant asks to audit, or when you are the tenant reviewing a statement. Deadlines, scope and cost-shifting are set by each lease, so confirm every item against the signed lease and involve counsel before disputing or conceding a finding.

Updated October 4, 2026Commercial property operations guidance, not legal, accounting, or tax advice.

1. Know the audit right in the lease

6 items
  • Find the audit or inspection clause and read it in full: who may audit, which years, and which expenses.
  • Note the deadline to request an audit, and what starts the clock (delivery of the statement or the end of the year).
  • Note who may perform the audit: the tenant’s staff, an accountant, or a third-party auditor, and whether contingency-fee auditors are allowed.
  • Note where and how records are made available, and any confidentiality requirement.
  • Note who pays for the audit and any overbilling threshold that shifts the cost to the landlord.
  • Note how a dispute is resolved if the parties disagree: continued discussion, arbitration, or another process.

2. Landlord: have the backup ready before you send statements

8 items
  • Keep invoices, receipts and contracts for every recoverable expense for the retention period the lease or your policy requires.
  • Keep the general ledger detail and the bank reconciliation that ties the recoverable pool back to actual spending.
  • Keep the allocation worksheet showing each tenant’s share, cap, exclusion, gross-up and administrative fee, with the lease section behind each rule.
  • Document why each large or unusual expense is recoverable, and why capital items and owner costs were excluded.
  • Document the management and administrative fee calculation against the lease’s limit.
  • Document any charge from a related party, such as an owner-affiliated vendor, and how its price compares with the market.
  • Record credits that reduce the pool, such as insurance proceeds, rebates and refunds, so they can be shown.
  • Keep the occupancy figures and square footages the shares and any gross-up rely on.

3. Tenant: what to check in the statement

8 items
  • Confirm the tenant’s square footage and the denominator behind its pro-rata share against the lease.
  • Compare each expense category with the lease’s definition of recoverable operating expenses.
  • Look for excluded items billed as CAM: capital improvements, leasing commissions, owner overhead, fines, and costs of other tenants’ spaces.
  • Check that any cap was applied in the order the lease specifies, and whether it is cumulative or non-cumulative.
  • Check that a gross-up, if any, applies only to variable expenses and does not recover more than the actual cost.
  • Check the administrative or management fee against the lease’s percentage and base.
  • Look for duplicate invoices, costs from other periods, and credits that were not applied.
  • Compare estimates billed with estimates paid, and recompute the true-up.

4. Run the audit

6 items
  • Acknowledge the request in writing within the time the lease requires.
  • Agree in writing on the scope, the years, the auditor and the dates.
  • Provide records at the agreed place and time, and keep a log of what was requested and supplied.
  • Keep originals and give copies; do not change the reconciliation during the audit without documenting why.
  • Answer questions in writing and keep a single point of contact.
  • Involve counsel before agreeing that an item was billed in error or that the lease means something different.

5. Resolve and record

6 items
  • List each finding with the amount, the lease section and the proposed outcome.
  • Issue a corrected statement for any agreed adjustment, and credit or refund the amount in the way the lease provides.
  • Record any dispute that remains and the lease process for resolving it.
  • Fix the cause so it does not repeat: a category mapping, a missing exclusion, or an unrecorded credit.
  • Update next year’s reconciliation checklist and the tenant’s lease record with what you learned.
  • Calendar the end of the audit window so you know when each year is closed.