What will your home project cost?

Free calculators for 35 common repairs and upgrades. Enter your size and materials, and get a low, typical and high price before you call a contractor.

How HouseMath estimates work

Every calculator uses national installed prices, meaning materials and labor together, for each common option. You set the size and conditions of your job, and the range updates as you go. Prices in your area can run higher or lower, so use the range to plan a budget and to judge the quotes you get. See our full method.

Starting prices shown are the low end for a typical job. Updated September 2026.