How much does composite deck cost?

What composite deck costs across the US and in your state, what pushes the price up or down, and the published guides behind every number.

$7,000Typical, US
$4,500 to $9,650Usual range
2 guidesCombined, sources below

The figures above are the guides' range for a typical job. The calculator prices your exact job, line by line, from the same guides.

sq ft
Length × width. 12 × 12 is 144, 16 × 20 is 320.
How high off the ground?
ft
Codes usually need a guard where the deck is about 30 in or more above the ground.
Adjusts labor to your state's wages.
Deck cost
$7,398 to $15,970
Typical $11,684 (US average)
$36.51Per sq ft, all in, typical
$7,398Low
$15,970High
Free. Your numbers become an estimate you can send from your phone.

How we got this

  1. Pressure-treated pine, materials$3.00 to $6.00 a sq ft (typical $4.50)Fixr $3 to $8, HomeAdvisor $2 to $5, Modernize $3 to $6. Low = middle of the lows, high = middle of the highs, typical = middle of the midpoints.
  2. Build labor$15.00 to $35.00 a sq ft (typical $25.00)HomeAdvisor, Modernize and Bob Vila all put deck labor at $15 to $35 a sq ft.
  3. Installed, before extras$18.00 to $41.00 a sq ft (typical $29.50)Materials plus labor. Bob Vila's all-in range is $30 to $60 a sq ft and Fixr's is $15 to $55, depending on the material.
  4. Wood railing40 ft × $35 to $55 a foot (typical $45)Fixr's installed prices and Bob Vila's prices averaged.
  5. Stairs3 steps × $25.00 to $50.00 a step (typical $37.50)Bob Vila and HomeAdvisor give $25 to $50 a step, Fixr $75 to $200 installed. The middle of the three. Custom stringers and landings cost more.
  6. Permit$163 to $500 (typical $331)Fixr, HomeAdvisor, Modernize and Bob Vila: $100 to $500 depending on the town. Not scaled by ZIP; call your building department for the exact fee.
  7. RegionUS average prices (no ZIP entered)Enter a ZIP to scale the labor part of the price to your state's wages.
  8. Total$7,398 to $15,970, typical $11,684
ItemQtyLowTypicalHigh
Decking and framing materials, pressure-treated pine320 sq ft$960$1,440$1,920
Deck build labor320 sq ft$4,800$8,000$11,200
Wood railing40 ft$1,400$1,800$2,200
Deck stairs3 steps$75$113$150
Building permit1$163$331$500
Total$7,398$11,684$15,970

Sources: Fixr, cost to build a deck; HomeAdvisor, cost to build a deck; Modernize, deck cost; Bob Vila, how much does it cost to build a deck; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files); US Census Bureau, 2020 ZIP Code Tabulation Area to county relationship file. Checked 2026-10-08.

Quick answer
  • Composite deck usually costs $4,500 to $9,650, about $7,000 typical.
  • A deck built with composite decking boards, materials and labor.
  • Price your own job with the calculator above; it breaks the job into lines.

What composite deck costs

Composite deck usually runs $4,500 to $9,650. A typical job lands near $7,000. A deck built with composite decking boards, materials and labor.

Composite deck, US, combined from HomeAdvisor and Bob Vila
Price
Low end$4,500
Typical$7,000
High end$9,650

The range blends HomeAdvisor and Bob Vila (method below). Where you live matters: Koira's estimate is $6,196 in Arkansas and $8,346 in Hawaii.

What drives the price

  • Board line. Entry composite costs less than capped and premium lines.
  • Size and height. The frame under composite is still wood and priced the same way.
  • Hidden fasteners and trim. Clean finish details add cost.

Composite deck cost by deck size

Deck sizePriceSource
80 sq ft$2,000 to $4,000Bob Vila

Composite deck cost by state

Koira estimates for each state, built from the national $4,500 to $9,650. About 50% of a composite deck price is labor, and only that part is scaled by the state's median wage for construction and extraction workers. A starting point, not a quote.

Composite deck by state, Koira estimates
StateLowTypicalHigh
Alabama$4,057$6,311$8,699
Alaska$5,107$7,945$10,953
Arizona$4,443$6,911$9,527
Arkansas$3,983$6,196$8,541
California$4,958$7,713$10,633
Colorado$4,562$7,097$9,783
Connecticut$4,957$7,710$10,629
Delaware$4,493$6,989$9,635
District of Columbia$4,899$7,621$10,506
Florida$4,115$6,401$8,824
Georgia$4,131$6,427$8,860
Hawaii$5,365$8,346$11,506
Idaho$4,372$6,801$9,375
Illinois$5,295$8,236$11,354
Indiana$4,587$7,136$9,837
Iowa$4,497$6,995$9,643
Kansas$4,327$6,731$9,279
Kentucky$4,258$6,623$9,131
Louisiana$4,137$6,435$8,871
Maine$4,529$7,045$9,712
Maryland$4,513$7,020$9,677
Massachusetts$5,177$8,054$11,103
Michigan$4,562$7,097$9,783
Minnesota$4,993$7,767$10,707
Mississippi$4,018$6,251$8,617
Missouri$4,583$7,128$9,827
Montana$4,553$7,083$9,765
Nebraska$4,282$6,661$9,183
Nevada$4,583$7,128$9,827
New Hampshire$4,520$7,032$9,694
New Jersey$5,026$7,818$10,777
New Mexico$4,135$6,433$8,868
New York$4,910$7,638$10,530
North Carolina$4,116$6,403$8,828
North Dakota$4,561$7,095$9,781
Ohio$4,598$7,153$9,861
Oklahoma$4,087$6,358$8,765
Oregon$4,748$7,386$10,183
Pennsylvania$4,537$7,057$9,729
Rhode Island$4,632$7,205$9,933
South Carolina$4,123$6,413$8,841
South Dakota$4,144$6,446$8,887
Tennessee$4,159$6,469$8,919
Texas$4,108$6,390$8,809
Utah$4,410$6,859$9,456
Vermont$4,507$7,011$9,665
Virginia$4,383$6,818$9,399
Washington$5,103$7,938$10,943
West Virginia$4,427$6,886$9,493
Wisconsin$4,655$7,241$9,982
Wyoming$4,508$7,012$9,667

Rural areas and cities in the same state can differ a lot.

How we got these numbers

GuideRangeAverageUse
HomeAdvisor$5,400 to $11,500$8,500Counted
Bob Vila$3,600 to $7,800$5,450Counted

How the composite deck range is combined: low end from the middle of the guides' lows, high end from the middle of their highs, typical from the middle of their averages (a range's midpoint where no average is given). Figures read on each guide's page on October 9, 2026.

Labor share used: 50%. None of the guides splits labor out for this job, so this share is Koira's working assumption for patios, decks and outdoor living work. State factor: the state's median hourly wage for construction and extraction workers over the national $28.63 (BLS, May 2025), kept between 0.7 and 1.4.

For contractors: price this job in Koira

Outdoor builds are priced by size and material, so show both and add the permit as its own line.

Run the numbers for a real composite deck in the free deck cost calculator, then save the result as an estimate. On Koira's free Office plan you build the estimate, text it, collect the deposit and turn it into an invoice when the composite deck is done. Price this job in Koira, free.

Sources: HomeAdvisor, composite deck cost; Bob Vila, composite deck cost; BLS Occupational Employment and Wage Statistics, May 2025 (state and national files). Prices checked October 9, 2026. More for your trade: how the trade runs on Koira.

FAQ

How much does composite deck cost?

Composite deck usually costs $4,500 to $9,650, with $7,000 typical. A deck built with composite decking boards, materials and labor.

How much more is composite than wood?

Composite boards cost more than pressure-treated wood but save years of staining.

Does composite decking need maintenance?

Just cleaning. No sanding or staining.

Where does composite deck cost the most?

Hawaii is highest in Koira's state estimates, about $8,346 typical, and Arkansas is lowest at about $6,196. Only labor is scaled by state.

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Composite deck Cost: Prices by State and What Drives Them | Koira