What to Do When CAM Charges Are Excessive
A practical tenant guide to benchmarking your charges, identifying specific overbilling, and exercising your lease protections when CAM charges seem unreasonably high.
Receiving a CAM reconciliation statement with a large balance due is stressful, but paying without review is often a mistake. CAM overbilling is pervasive in commercial real estate — independent analyses of audited CAM statements consistently find overcharges in the majority of reviewed reconciliations. 'Excessive' CAM charges can result from deliberate practices (including expenses the lease excludes, using a favorable denominator, ignoring caps) or from honest errors in complex multi-tenant reconciliations. The tenant's challenge is distinguishing between charges that are legitimately higher than expected (due to rising insurance, taxes, or maintenance costs) and charges that are mathematically or legally incorrect. This guide gives tenants a systematic process for assessing whether their CAM charges are excessive and taking action if they are.
When to Use This Guide
- When your annual CAM reconciliation shows a large balance due that significantly exceeds your monthly estimates.
- When CAM charges per square foot appear significantly higher than market benchmarks for comparable properties in your market.
- When year-over-year CAM growth exceeds the CPI or any cap percentage in your lease.
- When you are reviewing a CAM statement before the lease audit rights window closes.
- Before signing a lease renewal, to resolve any outstanding overbilling before the new term begins.
Step-by-Step Process (5 steps)
Benchmark Your Charges Against Market Data
The first step in identifying whether charges are excessive is context. Obtain market CAM benchmarks for your property type and submarket. BOMA publishes annual operating expense surveys by building class and market. JLL, CBRE, and Cushman & Wakefield publish market reports. CoStar and Trepp have property-level data. Compare your total CAM per SF (including taxes and insurance if applicable) against these benchmarks. Also compare your year-over-year growth rate against CPI and local market trends. A 20% year-over-year increase in a market where inflation was 4% is a red flag that warrants further review.
Tips:
- • Request the property manager's explanation for any year-over-year increase above 10% before committing to a full audit — there may be a legitimate one-time expense (emergency repair, insurance market hardening) that explains the increase.
Review the Reconciliation for Common Overbilling Patterns
Even without access to the full GL, review the reconciliation statement for obvious red flags: (a) Is the denominator in the pro-rata calculation correct? A smaller denominator than expected means a higher tenant share. (b) Was a gross-up applied? If so, was it applied to all expenses or just variable? (c) Was the CAM cap applied? If your lease has a cap and the charges grew more than the cap %, the cap should have reduced your billing. (d) Are there any unusual line items or categories you haven't seen before? (e) Does the management fee appear consistent with prior years?
Tips:
- • Compare this year's statement format against prior years — new line items that appear without explanation often signal newly-included excluded expenses.
Review Your Lease for Protective Provisions
Re-read your lease's operating expense and CAM provisions with fresh eyes. Specifically look for: (a) the CAM cap — applies to controllable expenses, may be 3–5% per year; (b) expense exclusions — capital improvements, depreciation, management fee cap, leasing costs; (c) audit rights — your deadline and process rights; (d) gross-up threshold — must be applied only to variable expenses; (e) denominator definition — should be total leasable SF, not occupied SF; (f) any expense stops or base year provisions that limit your obligation to expense growth above a baseline.
Tips:
- • If you have a broker or real estate attorney who negotiated your lease, ask them to identify the key protective provisions — they may recall specific provisions that reduce your exposure.
Document Specific Errors and Calculate the Impact
For each potential error you have identified, calculate the financial impact. This converts an impression of excessive charges into specific, quantifiable claims. Example: 'The gross-up was applied to property taxes, which are a fixed expense. The lease requires gross-up only on variable expenses. Incorrectly grossed-up taxes = $8,000. Our pro-rata share of that error = $800.' Quantifying each error gives you a clear picture of total exposure and helps prioritize which issues are worth pursuing.
Tips:
- • A CapVeri analysis can quickly identify the likely overcharge amount by running your lease provisions against the reconciliation data, before you commit to a full professional audit.
Request Correction or Initiate a Formal Audit
Once you have identified specific errors, send a written request to the landlord identifying the specific issues and requesting a corrected reconciliation statement. For simple, clear errors (e.g., a cap that wasn't applied), a direct request for correction often resolves the issue quickly without a formal audit. For complex or multi-year issues, or when the landlord is unresponsive, exercise your formal audit rights per your lease's audit rights provision. Send the formal audit request letter within the lease's audit window.
Warnings:
- • Do not let the audit rights window expire while waiting for an informal resolution — if the window is approaching, send the formal audit request immediately even if you are still in informal discussions.
Common Mistakes
Paying the reconciliation balance without review because the amount 'doesn't seem worth fighting over' — systematic overcharges of even $2,000/year over a 10-year lease total $20,000.
Assuming high charges must be correct because the landlord is a large institution or professional firm — CAM overbilling is equally common in institutional and local landlord portfolios.
Letting the audit rights window expire while in informal back-and-forth with the property manager — always send the formal request to preserve rights, even if you expect an informal resolution.
Focusing only on the current year's statement when the same errors may have been occurring for multiple prior years, all of which may still be within the audit window.
Not reading the lease before complaining — sometimes what appears excessive is actually correct and within the lease's terms.
Frequently Asked Questions
What counts as legally 'excessive' CAM charges?
There is no universal legal standard for 'excessive' CAM — the standard is whether charges comply with the specific lease terms. A charge is legally excessive if it includes items the lease excludes, applies a wrong pro-rata share, fails to apply a required cap, or applies a gross-up methodology inconsistent with the lease. High charges that comply with the lease terms are not legally excessive, even if they seem economically unfavorable.
How far back can I audit?
Your audit rights are limited by the window in your lease — commonly 12–36 months after delivery of each annual reconciliation statement. After that window closes for each year, your ability to challenge that year's statement is typically waived. Act promptly.
What is the average CAM overcharge found in audits?
Independent studies of commercial CAM audits report that 60–80% of audited statements contain some level of overcharge, with average overcharges ranging from 5–25% of the amount billed. For a tenant paying $100,000/year in CAM, this represents $5,000–$25,000 in potential recovery per audit.
Related Resources
Free Tools for This Dispute
Build Your Case with Hard Numbers
CapVeri independently recalculates every line of your CAM reconciliation — flagging overbillings, cap overruns, and excluded expenses before or during a dispute. First audit is always free.
Start Free Audit