Of all the line items in a commercial lease, common area maintenance charges are the ones tenants are most likely to underestimate, misread, or skip over entirely. CAM charges are also the ones most likely to surface as a surprise after you’ve signed. Understanding what they cover, how they’re calculated, and what the fine print actually means for your budget is one of the more practical things you can do before committing to a commercial space in Los Angeles.
What CAM Charges Actually Cover
Common area maintenance charges are costs the landlord passes through to tenants for maintaining the shared portions of a property. What qualifies as “shared” depends on the property type, but in most commercial leases the following categories are standard.
Janitorial and Cleaning
In multi-tenant buildings, janitorial costs for lobbies, hallways, shared restrooms, and exterior walkways are typically pooled and divided among tenants based on their proportionate share of the building’s rentable square footage. Interior cleaning of your own suite is almost always your responsibility separately.
Landscaping and Exterior Maintenance
Parking lot upkeep, exterior lighting, irrigation, and landscaping all fall under CAM in most retail and office leases. For properties with significant outdoor areas or structured parking, these costs can be meaningful, particularly in older buildings where deferred maintenance has accumulated.
Security
Building-wide security systems, on-site guards, and access control infrastructure are frequently included in CAM, depending on the property. In higher-end creative office buildings and retail centers, security costs can represent a larger share of the total CAM pool than tenants expect.
Property Management Fees
This is the category that surprises tenants most often. Many landlords include a property management fee, typically calculated as a percentage of base rent or gross revenues, within the CAM pool. Management fees of 3 to 5 percent are common in the Los Angeles market, and they represent a meaningful addition to the total CAM expense that has nothing to do with physical maintenance of the building.
How CAM Charges Are Calculated
Most commercial leases calculate each tenant’s CAM obligation based on their pro rata share: the ratio of your leased square footage to the building’s total rentable area. If you lease 2,000 square feet in a 20,000 square foot building, you’re responsible for 10 percent of the total CAM pool.
Landlords typically estimate CAM costs at the start of each lease year and collect them as a fixed monthly addition to your base rent. At the end of the year, actual expenses are reconciled against estimates. If actual costs exceeded estimates, you owe the difference. If they came in under, you receive a credit. That year-end reconciliation is where a lot of tenants encounter bills they weren’t expecting.
What CAM Looks Like in Practice on the Westside
CAM charges vary significantly between property types, and the Westside market illustrates that gap clearly.
In traditional multi-tenant office buildings in Santa Monica, CAM charges typically run $1.00 to $1.75 per square foot per month. These buildings often have higher management fees, structured parking, and more intensive common area upkeep, all of which feed into the total.
Creative office properties in Culver City tend to run lower on a per-square-foot basis, often in the $0.65 to $1.20 range, but with more variability depending on amenities. Properties with outdoor collaborative spaces, bike storage, or on-site food service may have higher landscaping and facility costs that push CAM up despite the more informal character of the space. Newer creative buildings also tend to have fewer deferred maintenance issues, which keeps unexpected pass-throughs more manageable.
The practical takeaway: a lease advertised at the same base rent in two different Westside buildings can carry meaningfully different total occupancy costs once CAM is factored in. Always request the prior two years of CAM reconciliation statements before signing. Browse our current listings to see available spaces across Los Angeles with our team’s context on true occupancy costs.
What to Watch in the Fine Print
Gross-Up Provisions
If a building isn’t fully occupied, some landlords gross up CAM costs to what they would be at full occupancy before calculating your pro rata share. This prevents landlords from subsidizing vacant space on their own, but it means your CAM obligation may be calculated against a larger cost pool than the building’s actual expenses.
Controllable vs. Uncontrollable Expenses
Many well-negotiated leases distinguish between controllable CAM expenses (janitorial, landscaping, management fees) and uncontrollable ones (utilities, taxes, insurance). Annual caps on increases typically apply only to controllable costs, so it’s important to understand which expenses sit in which category before assuming a cap protects you fully.
What’s Excluded
Capital expenditures, costs related to other tenants’ buildouts, and expenses for portions of the property you don’t benefit from are all candidates for exclusion. Negotiating clear exclusions up front protects you from paying for work that has nothing to do with your tenancy. Our services include reviewing and negotiating lease language on exactly these points.
Ready to Get a Clear Read on Your Lease Costs?
CAM charges aren’t designed to be confusing, but they’re detailed enough that tenants who don’t know the language regularly pay more than they need to. Working through the numbers before you sign, not after, is how you avoid that outcome.
At Lee West LA, our team works with commercial tenants across Los Angeles to evaluate total occupancy costs, identify negotiating opportunities, and make sure the lease language reflects what was agreed to. If you’re reviewing a commercial lease and want a second set of eyes on the CAM provisions, get in touch with us.