Cost to drywall 400 sq ft
Short answer
Drywalling 400 sq ft takes about 14 sheets of 4×8 and costs roughly $801–$1,711 installed — materials and labor at standard finish, about $2–$4 per square foot.
Installed cost
$801–$1,711
Per sq ft
$2–$4
Sheets (4×8)
14
Joint compound
2 boxes
Drywalling 400 square feet
400 sq ft of drywall is about 14 sheets of 4×8 (32 sq ft each) after 10% waste, plus roughly 2 boxes of joint compound, 500 ft of tape, and 400 screws. Installed at standard finish — materials and labor — plan on about $801–$1,711, or $2–$4 per square foot.
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Frequently asked questions
How much does it cost to drywall 400 square feet?
Roughly $801–$1,711 installed for 400 sq ft at standard finish — materials and labor — about $2–$4 per square foot.
How many sheets of drywall for 400 square feet?
About 14 sheets of 4×8 (32 sq ft each) including 10% waste. That also needs about 2 boxes of joint compound, 500 ft of tape, and 400 screws.
How much is a sheet of drywall?
A standard 1/2-inch 4×8 sheet runs about $12–$18. Installed labor (hang + finish) adds roughly $1.50–$3.50 per square foot depending on finish level and whether it's walls or ceiling.