CAM Charges in Commercial Leases: A Complete Guide

What Are CAM Charges?

CAM charges are fees paid by tenants to cover the costs of maintaining and operating the common areas of a commercial property — parking lots, lobbies, hallways, landscaping, elevators, and shared facilities. In a triple-net (NNN) or modified gross lease, these costs are passed through to tenants proportionally based on their share of the total rentable building area. CAM charges are in addition to base rent and are typically estimated at the start of each year and reconciled against actual costs at year-end — which can result in significant true-up payments.

What Do CAM Charges Include?

CAM charges typically include parking lot maintenance and resurfacing, landscaping and snow removal, exterior lighting, common area cleaning and janitorial services, security systems and personnel, property management fees, insurance on common areas, shared utility costs, and capital improvements to common areas. What's included varies significantly by lease and landlord. The more broadly the CAM definition is drafted, the more costs can be passed through to tenants.

What Should Be Excluded from CAM

Push to exclude from CAM: capital improvements (major upgrades, not repairs), costs covered by landlord insurance, costs attributable to other tenants' violations, ground lease payments, debt service on the property, executive salary above property manager level, and costs that should be attributable to vacant space. Each exclusion reduces your exposure.

Don't review your lease alone

SaferLease AI analyzes your entire lease and flags risky clauses in under 60 seconds — for free.

Free Preview → $19 to Unlock

How Are CAM Charges Calculated?

Your CAM charge is based on your proportionate share of the total rentable building area. If you occupy 5,000 square feet of a 50,000 square foot building, your pro-rata share is 10%. If total CAM costs are $200,000 annually, your estimated share is $20,000, or approximately $1,667 per month in addition to base rent. At year-end, the landlord reconciles estimated versus actual costs — if actual CAM exceeded estimates, you owe a true-up; if less, you receive a credit. Always request the prior two years of CAM reconciliation statements before signing.

The Gross-Up Problem

Some leases gross-up CAM charges — they calculate your proportionate share as if the building is 95-100% occupied even when it isn't. This prevents your CAM costs from decreasing when the building has vacancies (since the landlord still pays fixed costs). A gross-up provision can significantly increase your share of CAM compared to a simple pro-rata calculation.

CAM Caps and Exclusions

CAM caps limit how much your annual CAM charges can increase regardless of actual cost increases. A common structure is a 5% annual cap on controllable CAM expenses (those the landlord can control, excluding utilities and insurance which fluctuate with market). Without a cap, CAM charges can spike dramatically in years of major repairs or capital improvements. Negotiate both: a percentage cap on annual controllable CAM increases AND a defined list of exclusions from what qualifies as CAM.

Your Right to Audit CAM Charges

Most commercial leases include (or should include) a tenant right to audit CAM charges within a specified period after receiving the annual reconciliation statement — typically 12-24 months. Audit rights allow you to review the landlord's actual cost documentation and verify that charges are accurate and consistent with the lease definition of CAM. Studies suggest that CAM overcharges occur in a significant percentage of commercial leases. If your audit reveals overcharges, you're typically entitled to a credit plus sometimes interest or an audit cost recovery.

How to Negotiate CAM Provisions

Key negotiation points for CAM clauses: (1) define CAM specifically and list exclusions, (2) negotiate an annual cap on controllable CAM increases (3-5% is standard), (3) require the landlord to gross-up only to a reasonable occupancy rate (90-95%), (4) negotiate a right to audit with a clear process and timeline, (5) require advance notice of major capital projects that will be included in CAM, (6) negotiate to exclude management fees above a reasonable percentage of base rent (typically 2-4%). Use an AI lease review tool like SaferLease to identify whether your CAM provisions are standard or unusually landlord-favorable.