Compare renovation cost with entered rent, expense, and property-value improvements.
It keeps income, operating costs, financing, invested cash, value, timing, and exit assumptions explicit so you can reproduce the result and compare genuinely consistent scenarios.
Acquire→Improve→Sell or refinanceTrack every entered cost before measuring profitAnnual operating improvement = annual rent increase + annual expense savings. First-year benefit ratio = (annual operating improvement + value increase) ÷ renovation cost × 100%.
Read the result correctly
Use the result with its boundaries
A 20,000 renovation adding 2,400 annual rent, saving 600 annual expenses, and adding 10,000 in value has a 65% first-year benefit ratio and 15% recurring operating return.
Value improvement is an entered estimate, not a realized cash receipt. The calculation excludes financing, tax, downtime, overruns, and sale costs.
Quick guide
How to use this calculator
Enter property amounts from one consistent currency and period.
Use the labels to match the calculator's stated income, cost, area, or capacity convention.
Read the assumptions beside the result before using it in an investment comparison.
Entered fixed decimals use exact rational arithmetic. Money rounds only for display; a supported nonzero amount is never replaced by a misleading zero.
Worked example
Worked example
A 20,000 renovation adding 2,400 annual rent, saving 600 annual expenses, and adding 10,000 in value has a 65% first-year benefit ratio and 15% recurring operating return.
Amounts accept up to 30 digits and 12 decimal places and are capped at 1e12 per input. Rates are capped at 1000%; signed value-change rates cannot be below −100%.
International scope
No currency, tax regime, tenancy law, lender threshold, local market database, appraisal standard, or jurisdiction-specific fee is assumed.
Decision boundary
The result is an arithmetic scenario based on visitor-entered figures, not an appraisal, forecast, lending decision, legal determination, or investment recommendation.
Calculator-specific assumptions
Value improvement is an entered estimate, not a realized cash receipt. The calculation excludes financing, tax, downtime, overruns, and sale costs.
