Fees paid by commercial tenants to cover the cost of maintaining shared spaces in a building or shopping center, including parking lots, lobbies, elevators, restrooms, hallways, and landscaping.
CAM charges represent 15% to 35% of total occupancy costs in most commercial leases, making them one of the most financially significant and disputed line items in any lease negotiation or audit. Unlike base rent, which is a fixed, predictable amount, CAM charges fluctuate annually based on the landlord's actual operating expenditures for the building and site.
Eligible costs generally cover:
In multi-tenant buildings, each tenant pays a pro-rata share calculated as their leased square footage divided by the total rentable square footage of the property.
The formula is: CAM Contribution = (Tenant RSF ÷ Total Building RSF) × Total Annual CAM Expenses.
Example: A 5,000 RSF tenant in a 35,000 RSF building holds a 14.3% pro-rata share. If annual CAM expenses total $297,500, the tenant owes $42,500 per year ($3,542/month). Tenants typically pay estimated CAM charges monthly; at year-end the landlord issues a reconciliation statement comparing actual expenses against estimates. Tenants who underpaid owe the shortfall; those who overpaid receive a credit.
A well-negotiated lease explicitly excludes:
Landlords sometimes attempt to amortize capital improvements as "routine maintenance." Tenants without explicit exclusion language are exposed to these pass-throughs.
An annual CAM cap limits how much controllable CAM expenses — excluding taxes and insurance, which are typically uncapped — can increase year-over-year.
A 5% non-cumulative cap on $150,000 of controllable CAM means the tenant's exposure grows by no more than $7,500 per year regardless of what the landlord spends. Missing CAM caps are one of the most common red flags in commercial lease abstractions.
Most leases allow the landlord to "gross up" operating expenses to a 90–95% occupancy level when the building is less than fully leased. This ensures tenants pay their share of costs as if the building were full — rather than bearing an outsized share during vacancy periods. Without this provision, a 60%-occupied building would leave the remaining tenants covering nearly all operating costs. Tenants should verify the gross-up percentage and confirm it applies only to variable (occupancy-driven) costs, not fixed expenses.
Tenants with audit rights can review the landlord's CAM expense records, typically within 12 months of receiving the annual reconciliation statement. Without audit rights, tenants have no mechanism to verify reconciliation accuracy. According to the National Retail Tenants Association (NRTA), CAM overcharges of 10–30% are common in unaudited portfolios — a $50,000 annual CAM bill with a 15% error represents $7,500 per year in unnecessary expense.
Effective audit rights provisions specify: the audit window (typically 12 months after receiving the reconciliation statement), the right to hire an independent accountant, confidentiality protections for landlord records, and who bears the cost of the audit if errors exceed a threshold (often 3–5%).
Property managers automating CAM reconciliation can use CapVeri.com to handle year-end reconciliation statements automatically — calculating each tenant's share, generating reconciliation invoices, and tracking CAM cap compliance from the landlord side.
Once you've extracted your CAM provisions with Lextract, CamAudit.io applies 14 detection rules to your landlord's annual reconciliation statement — flagging management fee overcharges, pro-rata miscalculations, gross-up violations, and CAM cap breaches.
Lextract extracts these fields directly from your lease PDF:
CAM (Common Area Maintenance) charges cover shared-space upkeep including parking lot maintenance and resurfacing, snow removal, exterior landscaping, common-area lighting, security services, janitorial services for shared lobbies and hallways, shared utility costs, and property management administration fees of 3% to 5% of operating expenses. CAM charges typically represent 15% to 35% of total occupancy costs in commercial leases.
Each tenant's CAM contribution equals their leased square footage divided by the total rentable square footage of the property, multiplied by total annual CAM expenses. For example, a 5,000 RSF tenant in a 35,000 RSF building holds a 14.3% pro-rata share. If annual CAM expenses total $297,500, the tenant owes $42,500 per year or $3,542 per month. Tenants pay estimated CAM monthly, with a year-end reconciliation adjusting for actual expenses.
Tenants can audit CAM charges only if audit rights are explicitly negotiated into the lease — most states do not provide statutory audit rights for commercial leases. A strong audit clause specifies a deadline (typically 180 days after receiving the reconciliation), who can perform the audit, and requires the landlord to refund overcharges with interest if discrepancies exceed a threshold such as 5%. Without audit rights, tenants may need to file a lawsuit to access the landlord's expense records.
CAM charges add 15–35% to occupancy costs. Learn how to negotiate a 3–5% annual cap on controllable expenses, which exclusions matter most, and how to verify they land in the executed lease.
How AI lease extraction works, why commercial leases are harder than other documents, accuracy benchmarks by lease type, and a build-vs-buy framework for CRE teams.
Your landlord's annual CAM reconciliation statement can include errors and inflated charges. Learn how to read every line item, what the gross-up provision means, and what to challenge.
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