Concept Drafts › Free tools › Build budget with contingency calculator
Build budget with contingency calculator
A realistic total for any build: parts, labor, permits, a contingency and tax.
Results
A contingency of 10 to 20% covers price changes and surprises; first-time builds often need the high end. Get real quotes for the biggest items before you commit.
Stop working out one number at a time
A calculator is a quick check. A concept draft works these numbers out together with specs, drawings, a priced parts list, build phases and the rules to check, and updates them all when you change something.

More free calculators

Battery run time and range calculator
How long a battery runs a motor or load, and how far you'll go at a given speed.

Solar panel and battery size calculator
How many panels and how much battery you need for your daily energy use.

Board feet and lumber cost calculator
Board feet and cost for hardwood or lumber, with a waste allowance.

Concrete for a slab or footing calculator
Cubic yards of concrete and the number of bags for a slab, pad or footing.
Estimates for planning only. Have a qualified professional confirm sizes before you build.
