What are CAM charges in a commercial lease?
The short answer
CAM (common area maintenance) charges pass the landlord's property operating costs — cleaning, landscaping, security, management — through to tenants on top of base rent. In triple-net (NNN) leases they commonly add meaningfully to the real monthly cost, sometimes materially above base rent, and what counts as CAM is defined by the lease, not by any standard. The protections that matter — a cap on annual increases, exclusions for capital expenses, the right to audit the landlord's figures — are usually clearest when your lease grants them expressly.
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What the clause usually does
It defines a pool of property costs and allocates each tenant a share, usually by square footage, billed as estimates with an annual true-up. The definition decides everything: a tight one covers routine upkeep; a loose one can sweep in management fees, capital improvements, and administrative markups.
NNN means taxes, insurance, and maintenance all pass through — base rent is only part of the real cost of the space.
Why people worry
Tenants report CAM reconciliations that jump year over year with little explanation, six-figure roof or HVAC replacements appearing in the pool, and no practical way to check the landlord's math. The gap between the quoted base rent and the real monthly cost is the classic surprise.
What to look for in your lease
- The CAM definition — and explicit exclusions (capital expenditures, structural repairs, leasing costs).
- A cap on annual CAM increases, and whether it compounds or resets.
- An administrative or management fee percentage stacked on top.
- Audit rights: can you inspect the landlord's books, and within what window?
- How your pro-rata share is calculated, and what happens when the building isn't full.
Questions to ask before signing
- Ask the landlord for the last two years of actual CAM reconciliations for the property.
- Ask the other party to clarify which capital items, if any, can enter the CAM pool.
- Confirm whether a cap on annual increases is available.
- Consider having the lease reviewed if CAM is uncapped or the definition is broad.
Reading the actual document
The general rule tells you the baseline. Your lease tells you what you’re actually being asked to sign — and the wording is what binds. Read the specific clauses in your document before you sign.
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Common questions
How much do CAM charges usually add?
It varies by property type and market — additions materially above base rent are commonly reported for NNN retail and office space. The lease's estimate and past reconciliations for the specific property are the real numbers to ask for.
Can CAM charges be negotiated?
Yes — caps on increases, exclusion lists, and audit rights are standard negotiation points. They have to be in the lease to exist.
No account required · File deleted after analysis · Not legal advice. Dang reports contract findings in plain English — general information, not legal advice about your situation. For consequential decisions, consult a licensed attorney in your state.