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Opened Oct 27, 2025 by Alanna Stingley@alannastingley
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Common Area Maintenance (CAM).


What is Common Area Maintenance?
How Does Common Area Maintenance Work?
What Does Common Area Maintenance Include?
How to Calculate CAM Charges
Common Area Maintenance Formula (CAM).
Common Area Maintenance Calculator (CAM).
CAM Charges Calculation Example.
What prevails Area Maintenance?

Common Area Maintenance (CAM) refers to the charges sustained by renters on top of their base rent that are utilized to cover routine charges to preserve the shared areas of a given residential or commercial property.

How Does Common Area Maintenance Work?

Common location upkeep (CAM) charges are separate fees sustained each month on top of the base rent to cover costs associated with residential or commercial property maintenance.

CAM represents "Common Area Maintenance", and describes the costs paid by occupants to their proprietor for the maintenance of a residential or commercial property's common location.

The significance of common area upkeep (CAM) tends to be greater for commercial property (CRE) residential or commercial properties given that there are more renters and shared areas in such residential or commercial properties.

- Usable Area → The functional area is the area that leased by a particular renter. Therefore, the functional square footage in a building is what is inhabited by a special renter, inclusive of bathrooms, private conference rooms, and specific workplaces.

  • Common Area → On the other hand, the common area of a structure is not leased to a private but is rather available to all occupants for cumulative use. These shared areas can include lobbies, parking area, roofing decks, and elevators.

    So, who spends for the expenses related to preserving the typical area?

    Since all occupants can make use of the space, as part of the leasing agreement, each of them contribute towards such payments, generally on a pro rata basis.

    With those profits, the landlord is expected by occupants to ensure the typical areas are kept arranged and tidy, while repairing issues or fixing damages.

    What Does Common Area Maintenance Include?

    The most frequent kinds of common locations at residential or commercial properties consist of the following examples:

    - Lobby and Hallway.
  • Open Area Workspace.
  • Gym (Public Gym).
  • Janitorial Services.
  • Elevators.
  • Parking Spaces.
  • Shared Amenities.
  • Surrounding Outdoor Areas (Pool).
  • Building Security and Alarm Systems.
  • Concierge Services.
  • Roofing and Landscaping

    For instance, if the elevator shared by all tenants were to malfunction, the property manager is accountable for repairing the problem quickly.

    The stipulation pertaining to typical area upkeep (CAM) charges is mentioned in business genuine estate leases, where the specific terms around the contractual responsibilities of each celebration (the lessor and the lessee) are set.

    Furthermore, the type of lease signed between the two celebrations is key to figuring out each party's respective obligations, e.g. triple web (NNN).

    How to Calculate CAM Charges

    The CAM charges matter in realty, especially for business residential or commercial properties, because the costs impact the overall cost of committing to a rental arrangement at a given residential or commercial property.

    In a lot of leasing arrangements, the tenants pay a portion of the total CAM on a pro rata basis per the negotiated arrangement, i.e. in percentage with the quantity of square video footage leased.

    The calculation of each occupant's common area maintenance (CAM) cost, expressed on a yearly basis, can be determined by dividing the renter's square video by the gross leasable location in the building.

    - Step 1 → Divide the Tenant's Rentable Square Footage (RSF) by the Gross Leasable Area (GLA) of the Residential or commercial property.
  • Step 2 → Multiply the Pro-Rata Share (%) by the Estimated Annual CAM Charges of the Residential or commercial property.
  • Step 3 → Convert the Annual CAM Charge of a Renter into a Regular Monthly Fee (Divide by Twelve Months)

    Common Area Maintenance Formula (CAM)

    The typical area maintenance (CAM) incurred by each renter is computed by increasing their particular pro-rata share of expenditures by the expected annual CAM charge.

    Where:

    - Pro-Rata Share (%) = Tenant Rentable Square Footage (RTF) ÷ Gross Leasable Area (GLA).
  • Annual CAM Charge = Σ Monthly CAM Fees × 12 Months

    Since the renter CAM charge is an annualized metric, the quantity must be divided by twelve to convert into a month-to-month fee.

    Conversely, an alternative method to determine the CAM charges is on a per square foot (sq. ft.) basis, which is done by dividing the estimated yearly CAM fees by the residential or commercial property's leasable square footage.

    Since CAM charges are frequently designated based on the amount of area occupied, the renters with more area leased will sustain more CAM charges (and vice versa).

    Common location upkeep is most frequently calculated on an annualized basis, and then divided into regular monthly payments attributable to each occupant on a per square foot basis.

    Usually at the start of each year, a residential or commercial property owner will forecast the upcoming typical area upkeep (CAM) expenses for the entire residential or commercial property as part of the yearly spending plan, which impacts rates.

    Broadly put, CAM charges fall under 2 categories:

    1. Controllable Charges → The residential or commercial property owner has direct influence over manageable charges (e.g. administrative expenses, staff payroll).
  1. Uncontrollable Charges → On the other hand, uncontrollable charges, stay outside the residential or commercial property owner's control and are unforeseeable (e.g. snow storm, fire).

    However, CAM charge cost caps and floors can set restrictions on how much lease can be adjusted.

    FAQ: Is Capital Investment Included in CAM?

    For the a lot of part, capital expenses (Capex) are left out from typical area maintenance (CAM), based on the context of the spend.

    Why? Capex related the residential or commercial property enhancements, such as building a more contemporary health club for renters, are a kind of discretionary spending (and part of the property owner's cost of ownership).

    However, specific non-discretionary capital expenses can be categorized as common area maintenance, such as repairing a damaged A/C system, which affects all existing (and future) renters.

    Common Area Maintenance Calculator (CAM)

    We'll now carry on to a modeling workout, which you can access by submitting the kind listed below.

    Get the Excel Template!

    CAM Charges Calculation Example

    Suppose a residential or commercial property owner is approximating the typical location maintenance (CAM) charges expected on their business office structure for the approaching year, 2024.

    The total yearly CAM charges for the entire are predicted to be $260k, while the gross leasable location (GLA) is 50k sq. ft.

    - Annual CAM Charge = $260,000.
  • Gross Leasable Area (GLA) = 50,000 sq. ft.

    After dividing the overall annual CAM charges by the gross leasable area (GLA), the CAM charge per square foot is $5.20, which represents the quantity that each commercial tenant need to contribute based upon the amount of square video footage leased each year.

    - CAM Charge per Square Footage = $260,000 ÷ 50,000 sq. ft. = $5.20

    The approximated CAM charge per square video - $5.20 sq. ft. - need to then be designated in proportion with each occupant's pro-rata share.

    The pro-rata share is figured out by dividing the individual tenant's square video by the gross leasable location (GLA) of the office complex.

    Therefore, if one of the business renters rented a total of 6k sq. ft., the pro-rata share is 12%.

    - Pro-Rata Share (%) = 6,000 sq. ft. ÷ 50,000 sq.
    .
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Reference: alannastingley/dre#7