Common Area Maintenance Charges (CAM Charges) Explained
Common area maintenance charges — often referred to as CAM charges — are recurring expenses passed through to tenants in many commercial leases. These charges cover the cost of operating and maintaining shared areas of a property.
While CAM charges are standard in retail, office, and industrial leases, how they are defined and calculated can significantly impact a tenant’s total occupancy cost.
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What Are Common Area Maintenance Charges?
Common area maintenance charges include expenses related to shared spaces such as parking lots, landscaping, snow removal, lighting, security, utilities, and property management.
These expenses are typically billed as CAM charges and reconciled annually through CAM reconciliation.
How CAM Charges Are Calculated
CAM charges are generally allocated based on a tenant’s pro-rata share of the building or center. If a tenant occupies 10% of the total rentable square footage, they may be responsible for 10% of common area maintenance costs.
Errors can occur when square footage is miscalculated, vacant units are improperly included in allocations, or administrative fees exceed lease-defined caps.
Common CAM Overcharges & Errors
- Administrative or management fees exceeding lease caps
- Capital improvements billed as operating expenses
- Improper allocation of vacant space
- Duplicate or misclassified expenses
These issues are frequently uncovered when reviewing CAM reconciliation errors.
Why Common Area Maintenance Charges Matter
Even small common area maintenance charge errors can cost tenants $5,000–$50,000+ annually. Because CAM charges recur every year, unnoticed errors compound over time.
Most leases include strict audit window deadlines, limiting how long tenants have to dispute incorrect charges.
Review Your CAM Charges Before Deadlines Close
Upload your commercial lease to receive a tenant-first CAM & NNN audit summary identifying potential exposure and overcharges.
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