Renovation ROI Calculator
Most homeowners expect renovations to increase their home's value by more than they cost — but the data consistently shows that the average renovation recoups only 60-70 cents on the dollar at resale. The exceptions are specific projects in specific markets. This calculator uses Remodeling Magazine's annual Cost vs. Value Report and NAR's Remodeling Impact data to show you which projects in your region offer the best ROI — and which are being done for joy, not investment.
shortfall — the project costs more than it returns
after the renovation (ceiling-capped)
base project cost plus your contingency buffer
non-financial satisfaction (NAR) — matters most if you’ll live in the result for 3 more years
The orange bar is the value a buyer credits you (capped at the neighborhood ceiling); the grey bar is what you actually spend. When the grey bar is taller, the project recoups less than it costs — which is true of most renovations.
View the TypeScript implementation on GitHub: packages/calc/src/renovation-roi.ts · view tests
What this means
The instinct that a renovation “adds value” is half right. It usually adds somevalue — just rarely as much as it costs. The honest framing is a recoup rate: for every dollar you spend, how many cents come back when you sell? The Cost vs. Value data has been telling the same story for years — the typical project lands around 60 to 70 cents on the dollar, and the projects that beat $1 are almost all small, exterior, curb-appeal work: a new garage door, a steel entry door, fresh siding.
In my experience, the number that surprises people most is the over-improvement cap. There is a ceiling on what any home in a given neighborhood will sell for, set by the comparable sales around it, and a renovation that pushes you above that ceiling does not get paid back — the buyer pool that would pay more simply shops a nicer block. I’ve found this is the single most expensive mistake in renovation budgeting: pouring a high-end kitchen into a mid-tier neighborhood and expecting the appraisal to follow.
That is why the calculator separates the recoup rate from the ceiling and computes ROI on the cappedvalue. It also keeps the Joy Score honest as a separate line: I’ve seen plenty of renovations that lose money on paper and are still the right call — because the owner is going to live in that bathroom for the next decade, and use-value is real value even when it never shows up at closing.
Worked example
Start with the canonical winner: a $1,500 garage door replacement at the Cost vs. Value 2024 national figure of 194%recoup, on a $350,000 home with plenty of neighborhood headroom. Value added is $1,500 × 1.94 = $2,910, against $1,500 spent — a 194% ROI and a +$1,410 net gain. This is the rare project that genuinely makes money, which is exactly why curb-appeal work tops every regional ranking.
Now the more typical case — a minor kitchen remodel at $25,000 with a sensible 10% contingency and an 85% recoup rate. The contingency lifts the true cost to $27,500, but value added is computed on the base $25,000: $25,000 × 0.85 = $21,250. ROI is $21,250 ÷ $27,500 = 77.3%, and the net is −$6,250. That negative is the rule, not the exception: most interior renovations recoup less than they cost, and the contingency you should budget only widens the gap. The defensible reason to do it anyway is the Joy Score — if you’ll cook in that kitchen for years before selling, the use-value is real even though the spreadsheet shows a loss.
Frequently asked questions
The information and tools on this website are for general educational purposes only and do not constitute financial, investment, legal, or tax advice. Consult a licensed professional for decisions specific to your situation.