16 × 16 deck cost & materials
Short answer
A 16 × 16 ft deck is 256 square feet. In composite it costs about $7,680–$15,360 installed and needs roughly 39 deck boards and 13 joists.
Area
256 sq ft
Composite cost
$7,680–$15,360
Deck boards
39
Joists
13
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Frequently asked questions
How many deck boards for a 16 × 16 deck?
About 39 16-ft boards (5½" wide) for 256 sq ft, including 10% waste. Longer boards mean fewer pieces but more offcuts.
How much does a 16 × 16 deck cost?
A composite 16 × 16 deck costs about $7,680–$15,360 installed. Pressure-treated wood is cheaper; PVC costs more.
How many joists for a 16 × 16 deck?
About 13 joists at 16" on center, plus 6 footings. Enter your exact size and spacing in the calculator.