CPA practices and professional accounting firms occupying Class A and Class B office space. Similar to law firms in lease structure but often in smaller footprints. Partner-level oversight of lease costs is typically low, creating recurring exposure to base year and gross-up errors. Annual CAM exposure for this tenant type ranges up to $10,000-$50,000. CAMAudit runs 14 forensic detection rules specific to your lease structure in under fifteen minutes.
A CAM audit for accounting firms examines Full-Service Gross and Modified Gross lease reconciliations to identify base year gross-up errors that compound annual operating expense escalations, after-hours HVAC charges billed above the lease-specified rate, and above-grade management overhead improperly included in the operating expense pool.
TL;DR
Accounting firms overpay $1,500 to $10,000 per year from operating expense escalation errors and common area electricity allocation disputes.
Scan Your Accounting Firm Lease
Most accounting firm tenants recover $1,500 to $10,000. Results in under 15 minutes.
Free CAM audit → Find My OverchargesTypical Lease Structure
Full-Service Gross with Base Year Stop or Modified Gross
Avg. Locations
1-5
Annual CAM Exposure
$10,000-$50,000
Full-Service Gross with Base Year Stop or Modified Gross, tenant pays base rent and operating expense escalations above the base year amount.
Accounting firms signing leases during low-occupancy periods are particularly vulnerable to base year errors. If the lease commenced when the building was 65-75% occupied, actual base year expenses were materially lower than at full occupancy. Without gross-up, the baseline understates true costs and every subsequent escalation is inflated by a compounding error.
Accounting practices frequently use after-hours HVAC during busy season and year-end close. When HVAC is billed at a flat marked-up rate rather than the lease-specified rate, tenants have no way to verify whether the charge is accurate. Some landlords charge $75-$100 per hour for after-hours HVAC when the lease-specified rate is $40-$60.
Building operating expenses should include only on-site management and operational costs. Above-grade management company overhead, executive salaries, and portfolio management fees are not building operating expenses and should be excluded from the pool that generates operating expense escalations.
Base year not grossed up to 95% occupancy
When the base year is set during low building occupancy, actual expenses are understated relative to what they would be at full operation. The gross-up provision corrects this by adjusting base year expenses upward to a normalized occupancy level. Without it, escalations are overstated for the entire lease term.
Detection: Review the base year operating expense exhibit. Confirm a gross-up adjustment is applied. If the building was below 95% occupied in the base year, calculate: grossed-up expenses = (actual expenses / actual occupancy %) x 95%. Compare to the stated base year amount.
After-hours HVAC above the lease-specified cap
Most office leases specify an hourly rate for after-hours HVAC requests. When the landlord bills at a rate exceeding the lease specification, the overbilling can be substantial for accounting firms during peak workload periods. Even a $79/hour overcharge on 200 hours per year produces a $4,000 annual overcharge.
Detection: Request the HVAC usage log and the after-hours billing rate. Compare the billed rate to the rate specified in your lease's HVAC or operating expenses article.
Janitorial current year grossed up but not base year
Gross-up must be applied consistently to the same expense categories in both the base year and current year. If current year janitorial expenses are grossed up to normalize for vacant space, the base year janitorial must also be grossed up, or the comparison is mathematically skewed against the tenant.
Detection: Review the base year janitorial amount in the exhibit and compare to the current year's gross-up-adjusted janitorial amount. If gross-up appears only in the current year calculation, the methodology is inconsistent.
Above-grade management overhead in operating expenses
On-site property management salaries and operational costs are legitimate operating expenses. Corporate overhead, executive compensation, and portfolio management fees charged by the landlord's parent company are not building operating costs and should not appear in the pool.
Detection: Review the general ledger for line items referencing 'management overhead', 'regional management', 'corporate allocation', 'asset management fee', or 'portfolio management'. These should be challenged if they appear.
Operating expense escalation using wrong denominator
Your pro-rata share is calculated by dividing your rentable square footage by the building's total rentable square footage. If the denominator changes year-over-year without a corresponding change in building size, or if it excludes space it should include, your escalation is miscalculated.
Detection: Request the current building rentable square footage certification and compare to the denominator used in your reconciliation. Any discrepancy should be explained by a specific lease provision.
69%
69% of professional services office tenants on Full-Service Gross leases encounter at least one operating expense calculation error in the first three years of their lease.
Via: BOMA International [industry estimate] (2022)
Watch For This Trigger
The first operating expense reconciliation statement arrives in Year 2 showing escalations that exceed the negotiated estimate by more than 20%.
Most accounting firm tenants recover $1,500 to $10,000. Results in under 15 minutes.
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Ready to skip the reading and document the overcharge directly?
Find My OverchargesEquity Office Properties Trust v. BankAmerica Corp.
No. C-98-3042 (N.D. Cal. 1999)
Federal court examined operating expense gross-up mechanics in a Class A office lease and confirmed that applying gross-up to current year expenses without applying the same methodology to the base year creates a mathematical inconsistency that inflates escalations beyond what the lease authorizes.
Annual CAM Bill
$35,000/year
Typical Recovery
$2,500-$10,000
ROI Multiple
12-50x
Upload your lease. CAMAudit runs 14 detection rules in under 15 minutes.
When a CAM Audit May Not Apply
About the Author
Angel Campa is the founder of CAMAudit and a Principal SDET. He built CAMAudit after discovering that commercial tenants routinely overpay CAM charges due to errors that go undetected without forensic analysis. Connect on LinkedIn
Need to extract lease terms before your audit?
A CAM audit is only as accurate as your lease data. lextract.io extracts 126 structured fields from any commercial lease PDF: CAM definitions, pro-rata share, caps, base year, and audit rights. So you have the exact terms your landlord is supposed to follow.
Go to lextract.ioThis page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.
