Home Building Cost Calculator

This lays out a new build as separate lines instead of one square foot rate. Enter the finished living space and its cost per square foot, any garage or unfinished area at its own rate, your site work figure, the design and permit percentage, a contingency and the land price, and it returns each line, the construction total, the total with land and the cost per finished square foot. Financing, landscaping, driveway, well, septic, furniture and connection fees are left out and listed as such. Square foot rates differ by a factor of two or more between regions, so treat this as a budget frame and get local quotes.

Areas In

Square feet Square metres

Both areas and both per-area rates below are read in whichever you pick, and every figure comes back in it.

Every line is shown with the number it was worked out from. Change the rate per unit of area to match quotes from builders near you; it drives most of the total.

Finished Living Space (sq ft) *

In the unit you chose above. 200 to 20,000 square feet, or 18.6 to 1,858 square metres.

Build Cost per Unit of Finished Area ($)

Materials and labour together, from local builders if you have their numbers. Leave it blank for 150 dollars a square foot, which is 1,614.59 dollars a square metre.

Garage and Unfinished Space (sq ft)

In the same unit. Up to 3,000 square feet, or 278 square metres.

Rate for That Space ($ per Unit of Area)

Leave it blank for 70 dollars a square foot, which is 753.47 dollars a square metre.

Site Work and Utility Hookups ($)

Clearing, grading, driveway base, water, sewer or septic, power.

Design, Engineering and Permits (% of construction)

Contingency (%)

Ten percent is the usual minimum on a custom build.

Land Price ($)

Leave at zero if you already own the lot.

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