Common area maintenance charges can make or break your occupancy budget. Here is what they really cover and how to keep them in check.
One of the most frequent surprises I see with first-time commercial tenants is the CAM bill. You negotiate your base rent, sign the lease, and then discover your total monthly cost is significantly higher than you expected. As a Broker Associate at REMAX Collective with 23+ years of real estate experience, I have helped tenants across Hillsborough County, Pinellas County, and Sarasota navigate CAM charges. Understanding exactly what they cover and how to negotiate them can save you thousands over the life of your lease.
What CAM Charges Cover
CAM charges cover the shared expenses of operating and maintaining the common areas of a commercial property. These are spaces that benefit all tenants but are not part of any individual tenant's leased suite. Typical CAM expenses include:
Parking lot maintenance — repaving, striping, pothole repair, sweeping
Landscaping — lawn care, irrigation, tree trimming, seasonal plantings
Exterior lighting — parking lot lights, building exterior fixtures
Common hallways and lobbies — cleaning, HVAC for shared spaces
Trash removal — dumpster service for the property
Security — cameras, patrol services if applicable
Property management fees — sometimes included as a percentage of total expenses
Storm cleanup — in Florida, this includes hurricane preparation and drainage maintenance
How CAM Charges Are Calculated
Your CAM share is based on your proportionate square footage relative to the total leasable area of the building or complex. This is called your “pro rata share.” Understanding how to calculate your share is essential whether you're leasing retail space or office space.
Your Pro Rata Share = Your Leased SF ÷ Total Leasable SF
Most landlords estimate annual CAM expenses, divide by twelve, and bill tenants monthly along with base rent. At the end of the year, they reconcile estimated payments against actual expenses. If actual costs were higher, you owe the difference. If they were lower, you get a credit.
Parking lot maintenance is one of the largest CAM line items in Florida retail centers. Resurfacing, striping, and drainage add up quickly in our climate.
What Should NOT Be in Your CAM
This is where tenants need to pay close attention. Some landlords include expenses in CAM that really should not be there. Items that should typically be excluded:
Capital improvements — a new roof, structural repairs, or building additions benefit the landlord long-term and should not be passed through as annual maintenance
Leasing commissions and marketing — the cost of finding new tenants is the landlord's responsibility
Landlord's income taxes — property taxes are a standard NNN expense, but the landlord's own income taxes are not
Costs of correcting building code violations — pre-existing compliance issues belong to the owner
Depreciation — this is an accounting entry, not an operating expense
How to Negotiate CAM Charges
CAM charges are negotiable. Here are the key protections I recommend to every tenant client when working on tenant representation:
CAM cap. Negotiate a maximum annual increase — typically 3% to 5% — so your costs do not spike unexpectedly. This is one of the most impactful protections available.
Detailed exclusions. Spell out what cannot be included as CAM. Capital expenditures, legal fees, and management fees above a reasonable percentage should all be excluded.
Audit rights. Your lease should give you the right to review the landlord's CAM records and dispute inaccurate charges.
Gross-up provision. If the building is not fully occupied, the landlord should calculate CAM as if it were — otherwise you pay a disproportionate share of fixed costs.
CAM in Florida Commercial Leases
In Florida, CAM charges often include items that are less common up north — hurricane preparedness, storm drainage maintenance, and irrigation costs for landscaping in our climate. Florida properties may also have higher insurance-related pass-throughs due to the state's property insurance market. These are legitimate expenses, but you should understand exactly what they are before you sign. This is especially important in markets like Manatee County, Pasco County, and Polk County where newer retail developments have higher CAM bases.
CAM charges are not something to gloss over. They can represent a substantial portion of your total occupancy cost, and they are one of the most negotiable parts of a commercial lease. Know what is included, what should be excluded, and always negotiate protections before you sign. If the numbers feel unclear, that is exactly the kind of situation where having a broker in your corner pays for itself.
Building exteriors, roofs, and facades are maintained through CAM — but capital improvements to these elements should be excluded from your pass-through costs. See how the NNN lease structure handles these items differently.
Frequently Asked Questions
What are CAM charges in commercial real estate?
CAM stands for Common Area Maintenance. These are charges passed through to tenants to cover the cost of maintaining shared spaces in a commercial property, such as parking lots, landscaping, exterior lighting, and common hallways.
How are CAM charges calculated?
CAM charges are typically calculated based on your proportionate share of the total leasable area. If you lease 3,000 square feet in a 30,000-square-foot building, you pay 10% of the total CAM expenses. These are usually estimated monthly and reconciled annually against actual costs.
Can you negotiate CAM charges?
Yes. You can negotiate annual CAM increase caps, exclude certain expense categories (like capital improvements), request audit rights, and define exactly what qualifies as a CAM expense. Having a broker review your lease before signing helps protect you from unexpected cost increases.
What is a CAM cap?
A CAM cap limits how much your CAM charges can increase from year to year, usually expressed as a percentage. For example, a 5% annual CAM cap means your CAM charges cannot increase more than 5% over the prior year, regardless of actual expense increases.
Are CAM charges higher in Florida than in other states?
Florida CAM charges often include costs less common in colder climates — hurricane preparedness, storm drainage maintenance, and intensive irrigation for year-round landscaping. Florida also has elevated property insurance costs that may be passed through as NNN or CAM expenses. Tenants should request a detailed CAM breakdown before signing any Florida commercial lease.
