Free Audit Risk Scorecard

The highest-risk factors are: large tenants with significant CAM obligations (they have the most to gain from an audit), leases with explicit audit clauses and short exercise windows, year-over-year billing increases above 5-10%, complex pro-rata share calculations, and tenants represented by sophisticated real estate counsel. National tenants with dedicated lease administration teams audit more frequently than local tenants.

The best defense is a clean reconciliation process. Maintain detailed documentation for every expense allocation, ensure gross-up calculations match lease language exactly, verify pro-rata shares against current measurements, and keep a clear audit trail from GL entry to tenant invoice. Self-auditing your top 10 tenants annually catches most issues before outside auditors do.

The five most common findings are: (1) non-recoverable expenses included in the CAM pool, (2) gross-up applied incorrectly or not at all, (3) pro-rata shares calculated on outdated square footage, (4) capital expenditures not properly amortized, and (5) management fees exceeding lease caps. These five categories account for the majority of audit credits awarded to tenants.

Leases with broad audit rights (allowing audits of multiple years simultaneously), short notification windows, tenant-favorable definitions of 'operating expenses,' and provisions that award audit costs to the tenant if errors exceed a threshold (typically 3-5%) create the most exposure. Full NNN leases with detailed exclusion lists also generate more disputes than simple gross-up structures.

Industry estimates suggest 10-15% of commercial tenants with audit clauses exercise them in any given year, with the rate climbing during economic downturns when tenants scrutinize every expense. Large national tenants with dedicated lease admin teams audit on a regular cycle regardless of market conditions. The average audit results in a credit of 2-5% of billed operating expenses.