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

Old Market Rent (currency)

Required number input.

New Market Rent (currency)

Required number input.

Percentage change from an old market rent to a new market rent over a stated period. 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]

Growth Percent (percent)

The resulting growth 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.

• Rent Increase

  New monthly rent after a specified percentage increase from old rent.

• Collection Loss

  Expected uncollected rent from billed rent and a supplied loss percentage.

• Common Area Factor

  Common area as a percentage of usable tenant area under a stated measurement convention.