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Costs, Fees, and Operating Expenses

Common Area Maintenance (CAM)

The general term for costs associated with maintaining shared property areas — billed to tenants under a triple net or similar lease structure, in addition to base rent.

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Home › Glossary › Costs, Fees, and Operating Expenses › Common Area Maintenance (CAM)
Definition

Common area maintenance (CAM) is the general term for costs associated with maintaining shared property areas in a commercial building — landscaping, parking lot repair, exterior lighting, and property management — billed to tenants under a triple net lease or similar structure. See the full CAM charges glossary entry for a detailed breakdown of typical costs and negotiation points.

CAM as a category, not a single line item

CAM functions as an umbrella term covering multiple individual cost categories that together fund the upkeep of shared property infrastructure. In a single-tenant building, CAM effectively covers the tenant's own property upkeep costs; in multi-tenant settings, it's prorated across all tenants by square footage.

What to watch for before committing

Itemized cost breakdown

Request a detailed, itemized CAM budget rather than accepting a lump-sum estimate.

Audit rights

Negotiate the right to review the landlord's actual CAM expense records annually.

Annual increase caps

Ask for a cap on how much controllable CAM costs can rise year over year.

Capital expenditure exclusions

Confirm major capital repairs are excluded or amortized rather than billed in full in a single year.

Management fee calculation basis

Confirm whether the property management fee is calculated as a percentage of CAM or of total rent.

Gross-up provisions in multi-tenant buildings

In partially vacant buildings, confirm how your CAM share is calculated so vacancy doesn't inflate your cost.

When you need to know this

  • Budgeting true occupancy cost — estimating full annual cost beyond quoted base rent
  • Comparing competing buildings — normalizing all-in cost across properties with different CAM structures
  • Negotiating a new lease — establishing CAM caps and audit rights before signing
  • Lease renewal negotiations — reviewing CAM history to negotiate improved terms going forward

Frequently asked questions

What is common area maintenance (CAM)? +
Common area maintenance is the general term for costs associated with maintaining shared property areas in a commercial building, billed to tenants under a triple net or similar lease structure.
What is included in CAM? +
CAM typically covers parking lot and driveway maintenance, landscaping, exterior lighting, common area utilities, trash removal, security, and a property management fee.
Is CAM the same as CAM charges? +
Yes, CAM and CAM charges are generally used interchangeably to refer to the same category of shared property maintenance costs billed to tenants.
Can CAM costs be negotiated? +
Yes, tenants can often negotiate caps on annual increases, exclusions for capital expenditures, and audit rights to review the landlord's expense calculations.

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