LOCAL GUIDES
Deck Cost by State in 2026
Deck construction cost by US state in 2026: national average, most and least expensive states and how deck prices vary.
A 300 sq ft wood deck averages $8,700 nationally, but the state changes that by 20-30%. Here are the real 2026 numbers for deck pricing across the US.
THE SHORT ANSWER
Deck cost by state 2026
A 300 sq ft wood deck averages $8,700 nationally ($4,500-$18,000); composite averages $14k. The West runs 21% above average and the Southeast 10% below.
National average and state spread
A 300 sq ft wood deck averages $8,700 nationally, with the range at $4,500-$18,000. Composite decks run $9k-$20k (average $14k). The West runs about 21% above average ($10,500; California and Washington coastal labor runs 30-50% higher), and the Northeast about 3% above. The Southeast runs 10% below ($7,800 in Mississippi, Alabama, Georgia) and the Midwest/Southwest 7% below.
- Wood deck (300 sq ft): $8,700 avg ($4,500-$18,000)
- Composite deck: $9k-$20k (avg $14k)
- West: +21% (coastal labor +30-50%)
- Southeast: -10%; Midwest/SW: -7%
Adjusting your deck budget
Estimate the deck with the deck calculator at national rates, then apply the state index (national × index ÷ 100). For an $8,700 national deck, California lands around $11,700 and Mississippi around $7,400. Decking material (wood vs composite) changes the price more than the state in most cases.