Use this real-estate calculation for a transparent preliminary valuation, financing, income, expense, area, tax, return, or market scenario with explicit dates and assumptions.

Allocated Common Square Feet (ft2)

Required number input.

Usable Square Feet (ft2)

Required number input.

Common area as a percentage of usable tenant area under a stated measurement convention. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Common Area Factor Percent (percent)

The resulting common area factor percent returned as a number.

• Real properties differ in location, condition, leases, zoning, title, taxes, financing, vacancy, capital needs, environmental risk, and market liquidity. Forecasts and ratios are not appraisals, loan offers, tax opinions, or investment advice.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Reconcile assumptions to leases, operating statements, surveys, tax records, lender terms, comparable evidence, and physical inspection; test downside scenarios and obtain qualified local advice.

• Load Factor

  Load factor percentage: rentable area above usable area divided by usable area.

• Building Efficiency Ratio

  Usable floor area as a percentage of total gross building area.

• Rentable Area

  Rentable floor area from usable area and load factor measured relative to usable area.