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Siding for a 30×40 House

A 30×40 house with 9 ft walls has about 1,260 sq ft of wall — roughly 13.9 squares of vinyl siding plus 2 roll of house wrap. This is gross area; subtract big windows and doors below.

01 / YOUR MEASUREMENTSUpdate any value
Siding squares
13.9 sq
Wall area
1,260 sq ft30×40 footprint, 9 ft walls (gross)
Siding to buy
13.9 squares1 square = 100 sq ft, incl. 10% waste
House wrap
2 rolls9×100 ft rolls
Siding cost (est.)
$4,410~$3.50/sq ft vinyl

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

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