Free tool

Renovation cost calculator

What your project actually costs, by size, finish level and region — with materials, labour, permits and contingency shown separately so you can compare a real bid against it line by line.

Every figure is a range. Renovation pricing varies by a factor of two on identical scopes, and a tool that answers with one confident number is guessing at a precision it does not have.

Pick your project

Kitchen Remodel$46,000 – $92,000Mid-range, 200 sq ft, national averageBathroom Remodel$17,250 – $34,500Mid-range, 40 sq ft, national averageWhole-House Renovation$82,800 – $207,000Mid-range, 1,800 sq ft, national averageBasement Finishing$41,400 – $78,200Mid-range, 800 sq ft, national averageHome Addition$115,000 – $184,000Mid-range, 400 sq ft, national averageRoof Replacement$14,490 – $24,840Mid-range, 1,800 sq ft, national averageSiding Replacement$20,700 – $37,260Mid-range, 1,800 sq ft, national averageDeck Build$13,800 – $24,150Mid-range, 300 sq ft, national averageWindow Replacement$9,660 – $16,560Mid-range, 12 windows, national averageHVAC Replacement$9,200 – $16,100Mid-range, 1 systems, national averageFlooring Installation$9,200 – $18,400Mid-range, 1,000 sq ft, national averageInterior Painting$6,900 – $12,075Mid-range, 1,500 sq ft, national average

How regional pricing works

Materials cost roughly the same everywhere. Labour does not, and labour is about half of most renovation invoices — so the same kitchen costs meaningfully different amounts in Boise and Boston.

MarketVersus national average
National averageBaseline
Northeast metro (NY, Boston, DC)+32%
West Coast metro (SF, LA, Seattle)+38%
Midwest−10%
South & Southeast−12%
Mountain West & Southwest+2%
Rural / small town−18%

Frequently asked questions

How accurate are renovation cost estimates?

A planning estimate should get you within about 20% of the bids you receive, which is close enough to decide whether a project is worth pursuing and not close enough to sign anything. Real pricing depends on your house, your region and what is found behind the walls — which is why every estimate here is a range with a contingency line, not a single number.

How much should I budget for contingency?

10% on a newer house with a simple scope, 15% as a standard recommendation, and 20% on anything built before about 1970. Older houses hide knob-and-tube wiring, cast iron waste lines, asbestos and lead paint, and all of those are discovered after demolition has already started.

Why do renovation costs vary so much by region?

Mostly labour. Trade rates in coastal metros run 30–40% above the national average, while rural markets run 15–20% below. Materials cost roughly the same everywhere; the person installing them does not.

Which renovations add the most value?

Exterior work leads — siding replacement, garage doors and entry doors recoup the most, often 75% or more. Kitchens and bathrooms recoup around 60%, and the more upscale the finish, the smaller the fraction you get back. No renovation returns more than it costs; renovate for how you will live in the house, and treat resale value as a partial rebate.

Need the material quantities too?

The calculator suite works out paint, flooring, tile, drywall, concrete, roofing and decking quantities down to the box and the bag.

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