Class A Office CAM Reconciliation Guide for Landlords
Typical CAM pools, billing errors, gross-up mechanics, and BOMA standards for class a office properties.
Benchmark CAM per SF
$10.00– $18.00 / SF
Source: BOMA EER / IREM 2024
Gross-Up Applicability
Highly relevant. Class A office buildings frequently operate below 95% occupancy. Variable expenses (janitorial, utilities, management fees) should be grossed up. Fixed expenses (taxes, insurance) pass through at actuals.
Typical CAM Pools
- Janitorial
- Utilities (common area)
- HVAC maintenance
- Elevator maintenance
- Security
- Landscaping
- Management fees
- Insurance
- Property taxes
Standard Exclusions
- Tenant improvements
- Leasing commissions
- Capital improvements (roof, HVAC replacement)
- Above-standard cleaning
- Executive suite amenities
Common Lease Structures
Common Billing Errors
- Grossing up insurance (a fixed cost)
- Including lobby renovation CapEx in operating expenses
- Miscalculating the load factor after floor reconfiguration
Relevant BOMA Standards
- ANSI/BOMA Z65.1-2024 (Office Buildings)
- Method B for multi-tenant floors
Class A Office CAM Context
Class A office is the most common property type for CAM disputes due to high per-SF charges, sophisticated tenants, and complex gross-up mechanics.
Industry Benchmarks
Source: Public REIT 10-K filings (FY 2025), BOMA EER (2025 edition). Data compiled March 2026.
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