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Exterior Paint for a 20×30 House

A 20×30 house with 9 ft walls has about 900 sq ft of wall — roughly 6 gallons for two coats. Subtract big windows below for a tighter number.

01 / YOUR MEASUREMENTSUpdate any value
Paint to buy
6 gal
Wall area
900 sq ft20×30 footprint, 9 ft walls (gross)
Paint (2 coats)
6.0 gallonsbuy 6 gal
Coverage
300 sq ft / gallonper coat, exterior surface
Paint cost (est.)
$270~$45/gal exterior

Planning estimate. Adjust allowances and sample prices for your supplier; tax, delivery, and labor are not included.

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