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Common Area Maintenance Calculator

Work out common area maintenance instantly with clear inputs, formula shown and shareable results.

About Common Area Maintenance Calculator

Common area maintenance is recovered pro rata: total CAM cost divided by gross leasable area gives a rate per square foot, and each tenant pays that rate on its leased area. Landlords typically add an administration fee of five to fifteen percent to cover management of the CAM budget itself.

Formulas

Pro rata share

Rate = total CAM / gross leasable area; tenant share = rate x tenant area

With admin

Total = tenant share x (1 + administration fee)

Worked example

With the default values below, Common Area Maintenance Calculator returns Tenant CAM charge for the year of $158,400.00. Change any input above and every figure here is recalculated in your browser.

Inputs used

Total annual CAM costminimum 0
2,400,000
Total leasable areaminimum 0.1 ft²
50,000 ft²
Tenant leased areaminimum 0 ft²
3,000 ft²
Administration feeaccepts 0–25 %
10 %

Results

Tenant CAM charge for the year
$158,400.00
CAM rate
$52.800
Tenant monthly CAM
$13,200.00
Administration fee included
$14,400.00

Step by step

  1. 1Values used
  2. 2Pro rata share
  3. 3With admin
  4. 4Tenant CAM charge for the year= 158,400.00
  5. 5CAM rate= 52.800 per ft² per year
  6. 6Tenant monthly CAM= 13,200.00
  7. 7Administration fee included= 14,400.00

Assumptions and limits

  • The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
  • In particular, this calculator does not take inflation or tax into account.
  • Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

How is the Common Area Maintenance figure worked out?

Rate = total CAM / gross leasable area; tenant share = rate x tenant area. Common area maintenance is recovered pro rata: total CAM cost divided by gross leasable area gives a rate per square foot, and each tenant pays that rate on its leased area.

What happens when the mall is not fully let?

That is the vacancy risk question. A gross-up clause lets the landlord charge as if the centre were 90-95 percent occupied, otherwise sitting tenants absorb the vacant units' share.

What values do I need to enter?

This calculator takes 4 inputs: Total annual CAM cost, Total leasable area, Tenant leased area, Administration fee. The pre-filled defaults are a realistic worked example — replace them with your own site or project figures.

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