Deck cost by size

Composite cost and materials for common deck footprints. Pick a size, or run your exact deck through the calculator.

10 × 10 ft

$3,000–$6,000

10 × 12 ft

$3,600–$7,200

12 × 12 ft

$4,320–$8,640

12 × 16 ft

$5,760–$11,520

12 × 20 ft

$7,200–$14,400

16 × 16 ft

$7,680–$15,360

16 × 20 ft

$9,600–$19,200

20 × 20 ft

$12,000–$24,000