About CostWise Lab

Last updated October 2026

CostWise Lab builds free, transparent calculators that help homeowners in the United States plan home improvement projects and budget for them with confidence.

Our mission

Getting a fair price on a home project is hard when you have no idea what it should cost. We turn your measurements into a realistic price range, explain every assumption and link to our sources, so you can compare contractor quotes on equal footing.

How we work

• Every calculator shows its formula and the data behind it.
• Prices are reviewed and updated at least once a year.
• State adjustments use official data from the U.S. Bureau of Economic Analysis.
• We never accept payment to change an estimate.

Read our editorial policy and methodology.

Who we are

CostWise Lab is an independent project run by a small team focused on home improvement data and web tools. Questions, corrections or local price data to share? Contact us.