Deck Building Cost in Fort Smith, AR (2026)
Updated October 2026 · Fort Smith, AR · index 0.83
How much does it cost to build a deck in Fort Smith? For a 300 sq ft deck with pressure-treated wood, homeowners in Fort Smith, AR pay about $9,350 on average, and most quotes land between $6,450 and $12,200 — $22 to $41 per sq ft. The price covers plans and the permit, footings, a framed and flashed structure, the deck boards, railing, one set of stairs, fascia and cleanup.
The deck building price in Fort Smith runs 17% below the U.S. average: construction labor in the Fort Smith area runs 28% below the national mean, materials 1% below. The same job averages $11,300 nationally and about $9,450 at the Arkansas statewide index.
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Deck building price in Fort Smith by decking material
What a 300 sq ft deck costs in Fort Smith with each decking material, installed:
| Option | Average · range |
|---|---|
| Pressure-treated woodtreated pine or fir boards, stained and sealed$31 per sq ft | $9,350$6,450 – $12,200 |
| Capped compositehidden fasteners and a picture-frame border$37 per sq ft | $11,200$7,950 – $14,500 |
The least expensive option in Fort Smith is pressure-treated wood, at about $9,350; capped composite averages $11,200, 1.2 times as much.
Cost to build a deck in Fort Smith by size
With pressure-treated wood, priced for Fort Smith, AR:
| Size | Average · range |
|---|---|
| A 200 sq ft deck$34 per sq ft | $6,700$4,600 – $8,850 |
| A 300 sq ft deck$31 per sq ft | $9,350$6,450 – $12,200 |
| A 400 sq ft deck$30 per sq ft | $12,000$8,350 – $15,600 |
Some costs stay the same whatever the size — plans, permit and layout, one set of stairs (4 steps), final inspection and cleanup — so a bigger job costs less per unit: $30 per sq ft for a 400 sq ft deck against $34 for a 200 sq ft deck.
What a deck building in Fort Smith includes
Line by line, the $9,350 average for a 300 sq ft deck breaks down like this: 47% labor, 53% materials and equipment.
| Line | Low – high |
|---|---|
| Plans, permit and layout | $310 – $920 |
| Ground prep, fabric and gravel | $180 – $460 |
| Footings below the frost line | $340 – $690 |
| Flashed ledger on the house | $210 – $400 |
| 6x6 posts | $230 – $460 |
| Beams | $210 – $400 |
| Joist framing with hangers | $1,200 – $2,000 |
| Deck boards | $1,100 – $1,650 |
| One set of stairs (4 steps) | $430 – $850 |
| Railing | $1,550 – $2,700 |
| Fascia and skirting | $300 – $710 |
| Final inspection and cleanup | $120 – $310 |
| Stain and seal, two coats | $270 – $640 |
Each line is the price book's U.S. rate for that step, scaled by 0.74 to the installed price published sources give for the whole job (see how these prices are built), times Fort Smith's index of 0.83; permit fees are not scaled.
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What affects deck building prices in Fort Smith
Labor and materials in Fort Smith
Construction wages in the Fort Smith metro run 29% below the U.S. mean (BLS, May 2025), and specialty-contractor pay in the city's county moves that up by 1%, to 28% below the national mean. Materials in the area's ZIP codes price 1% below the national average. Together they give Fort Smith a construction cost index of 0.83.
Where Fort Smith sits in Arkansas
Fort Smith is the 4th most expensive of the 4 Arkansas cities in our index, against a statewide index of 0.84. Fayetteville is the dearest at 0.88; no Arkansas city in it costs less.
Against the rest of the country
Of the 306 U.S. cities in JobFlex's index, Fort Smith ranks 304th from the most expensive. The job that averages $9,350 here averages $11,300 at the national rate.
Frost depth in Arkansas
Deck footings go below the frost line, or they heave by the second spring. The typical code frost depth in Arkansas is about 12 in.. Your building department sets the exact figure.
The deck code in Arkansas
Decks here are built to the Arkansas Fire Prevention Code, Volume III — Residential (2021 IRC). Guards are required at 36 in. where the deck is more than 30 in. up, and stair risers can be up to 7.75 in. Enforced by 2023 in Little Rock; the exact state start date is unconfirmed.
What decks are built of in Arkansas
Most used on decks in Texas, Oklahoma, Arkansas and Louisiana: treated pine, then capped composite, then cedar.
Sales tax in Arkansas
Arkansas's base state sales tax is 6.5%, and cities and counties can add their own. How it applies to a home-improvement contract varies, so ask whether a quote includes it. Prices on this page are before tax.
What a Fort Smith contractor will ask before quoting
- Reuse the frame or rebuild?
- Height, railing style and stairs
- Board brand and color
Deck building cost in other Arkansas cities
A 300 sq ft deck with pressure-treated wood averages $9,350 in Fort Smith; $9,800 in Bentonville, $9,900 in Fayetteville, $9,550 in Little Rock.
| City | Average · range |
|---|---|
| Bentonville, AR5% more | $9,800$6,750 – $12,800 |
| Fayetteville, AR6% more | $9,900$6,850 – $13,000 |
| Little Rock, AR2% more | $9,550$6,600 – $12,500 |
deck building price in Fort Smith: questions
How much does it cost to build a deck in Fort Smith, AR?
About $9,350 for a 300 sq ft deck with pressure-treated wood, and most Fort Smith quotes fall between $6,450 and $12,200. That is 17% below the U.S. average, where the same job averages $11,300.
What is the deck price per square foot in Fort Smith?
$22 to $41 per sq ft, about $31 on average with pressure-treated wood. Smaller jobs cost more per unit, because the fixed costs are spread over less.
How much is a 400 sq ft deck in Fort Smith?
$8,350 to $15,600, about $12,000 on average, with pressure-treated wood — $30 per sq ft.
Do you need a permit for deck building in Fort Smith?
Yes — a new deck needs a permit nearly everywhere, Fort Smith included. In Arkansas, decks follow the Arkansas Fire Prevention Code, Volume III — Residential (2021 IRC). The prices on this page carry $310–$920 for plans, permit and layout.
Does the price include sales tax in Arkansas?
No. The prices here are before tax; Arkansas's base state rate is 6.5%, plus any local rate.
What decking do people choose in Arkansas?
Most used on decks in Texas, Oklahoma, Arkansas and Louisiana: treated pine, then capped composite, then cedar.
Other home projects in Fort Smith
Deck building cost in Arkansas
How these prices are built
Every price on this page comes from JobFlex's contractor price book: what a homeowner pays a licensed contractor for each step of the job, as a U.S. national average per unit, with the contractor's overhead and profit included and sales tax left out. The deck building is priced step by step, then multiplied by Fort Smith's construction cost index of 0.83.
Where the price book's steps for an option add up to more than 20% over the installed price a published source gives for the whole job, every step but a permit fee is scaled down to the middle of that range: pressure-treated wood × 0.74 (HomeGuide 2026: $25–$50 per sq ft); capped composite × 0.80 (Ergeon 2026: $30–$60 per sq ft).
The index weighs local construction wages (BLS Occupational Employment and Wage Statistics, May 2025) at 60% and the area's material prices (Craftsman ZIP-area factors) at 40%. Published indices for Fort Smith, each on its own base: HUD 0.87, Craftsman 0.93. Treat any city figure as about ±5%; a contractor's quote for your house is the number to plan with.
Contractors in Fort Smith build quotes like these with JobFlex's Deck Studio.
- HomeGuide 2026: pressure-treated deck $25-$50/sqft installed, labor $15-$30/sqft
- Ergeon 2026: composite deck $30-$60/sqft installed
- HomeGuide 2026: composite railing $25-$60/lf, aluminum $50-$200/lf installed