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Commercial Area Rent & Agent Fee Calculator

Calculate annual space rent from area rates and estimate a fee over an entered rental period.

  • Formula & worked example
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Use the result with context

Results are estimates for planning and education. Confirm rates, taxes, fees, and legal requirements with the relevant institution or a qualified professional before making a financial decision.

Formula and method

For 100 m² at an annual base rate of 200 per m² plus 40 per m² in operating expenses, annual rent is 24,000. A 6% fee on two years of that rent is 2,880.

Annual rent = area × (base annual area rate + annual area expenses); agent fee = annual rent × years × fee rate

Worked example

Enter these known values and leave the other values blank.

Leased floor area
100 m²
Base annual rate per area
200 USD / m² /yr
Annual expenses per area
40 USD / m² /yr
Assumed agent fee rate
6 %
Rent period used for fee
2 yrs rent
Combined annual rate per area
240 USD / m² /yr
Rent per selected period
24000 USD / yrs
Estimated agent fee
2880 USD

Assumptions and limitations

  • Base rate and operating expenses are annual amounts per selected area unit. Enter both on a consistent annual basis; the rent output can be displayed per another time unit.
  • The default 6% and two years are editable examples, not quoted market terms. This uses a constant rate with no escalation, rent-free months, taxes or discounting.
  • Use a nonnegative fee rate below 100% and a nonnegative fee period. Actual lease and brokerage agreements determine what charges and rent periods apply.

Common questions

Can I enter a monthly area rate directly?

The base-rate and expense inputs use an annual basis. Multiply a monthly area rate by 12 before entering it. The separate rent output has a time-unit selector.

Does this account for different lease structures?

Only through the amounts you enter. Review which expenses belong in your agreement and avoid adding an expense already included in the base rate.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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