CAM Leakage Estimator
Discover modeled CAM revenue exposure for your portfolio using benchmark assumptions.
CAM leakage is revenue lost when landlords underbill tenants for common area maintenance expenses — through gross-up errors, missed cap adjustments, excluded expense failures, or simple math mistakes. Industry benchmarks suggest leakage affects a significant share of commercial portfolios.
Your Portfolio
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Your Estimate
Estimated annual CAM leakage
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Property valuation impact (at 7% cap rate)
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Enter your portfolio details above to see your estimate.
Modeled scenario rates: 0.25% (low) to 1.5% (high). Use your own portfolio history to calibrate assumptions.
See what CapVeri finds in your actual GLFrequently Asked Questions
What is CAM leakage?
CAM leakage refers to the gap between what a landlord is entitled to recover from tenants under their lease terms and what they actually bill. Common causes include gross-up miscalculations, missed annual cap adjustments, incorrect pro-rata share calculations, and failure to bill for all recoverable expenses.
How much CAM leakage is typical?
Industry data suggests leakage rates vary widely, from less than 1% to over 3% of total operating expenses depending on portfolio size, lease complexity, and process maturity. For a 200,000 SF office building, even 1% leakage can represent $20,000+ in annual lost recovery.
What causes CAM billing errors?
The most common causes are: (1) gross-up not applied or applied incorrectly, (2) annual CAM cap escalators not tracked, (3) non-recoverable expenses included in tenant billings, (4) pro-rata share calculated on wrong square footage, and (5) base year amounts not adjusted for lease amendments.
How do I detect CAM leakage in my portfolio?
Start by comparing your lease terms to actual billings for each tenant. Check gross-up calculations against occupancy data, verify cap escalators are current, and confirm pro-rata shares match lease abstracts. Tools like CapVeri automate this comparison across your entire portfolio.
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