Home Project Cost Worksheet
Pick your project to see what owners typically pay, then type the prices from your quotes. The total shows what you have priced and what is still missing.
Your budget
Pick your project
Then type the prices from your quotes.
What owners typically pay
- Kitchen remodel: $8,000
- Bathroom remodel: $5,000
- New roof: $10,000
- Deck, porch or patio: $4,750
- Siding: $5,000
- Windows and doors: $2,800
- Heating and cooling: $5,500
- Flooring: $3,000
- Bedroom addition: $7,000
- Kitchen addition: $25,000
- Family room addition: $10,000
These are what U.S. homeowners reported paying to the Census Bureau for work done in 2021 to 2023, every size of job together. Your own quotes are the price that counts.
Building a new house
New single-family houses sold in 2025 had a median price of $417,400, land included, and a median size of 2,194 sq ft. Houses a contractor built on the owner’s own land had a median contract price of $404,000, land not included (Census Bureau, Characteristics of New Housing, checked 2026-10-07). Use them as the starting line and replace them with your quotes: compare quotes that cover the same size, finish and site work, because a price per square foot means little when one quote leaves out the driveway, the utility hookups or the permits.
Contingency
Most builders and lenders plan a 10 to 20% contingency for surprises, such as rot found behind a wall; pick one or type your own. It is worked out on the priced subtotal, tax included. Leave out an incentive, rebate or insurance payment until its amount is confirmed.
Priced is not the same as complete
A subtotal cannot cover work still marked “not priced yet”. Ask whether demolition, access, delivery, permits, repairs and cleanup are in each price. Enter zero only when you have confirmed there is no charge, and mark a category “Not needed” when it does not apply.