Deck Building Cost in Sioux Falls, SD (2026)
Updated October 2026 · Sioux Falls, SD · index 0.93
How much does it cost to build a deck in Sioux Falls? For a 300 sq ft deck with pressure-treated wood, homeowners in Sioux Falls, SD pay about $10,500 on average, and most quotes land between $7,250 and $13,700 — $24 to $46 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 Sioux Falls runs 7% below the U.S. average: construction labor in the Sioux Falls area runs 11% below the national mean, materials sit at the national level. The same job averages $11,300 nationally and about $10,100 at the South Dakota statewide index.
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Deck building price in Sioux Falls by decking material
What a 300 sq ft deck costs in Sioux Falls with each decking material, installed:
| Option | Average · range |
|---|---|
| Pressure-treated woodtreated pine or fir boards, stained and sealed$35 per sq ft | $10,500$7,250 – $13,700 |
| Capped compositehidden fasteners and a picture-frame border$42 per sq ft | $12,600$8,900 – $16,200 |
The least expensive option in Sioux Falls is pressure-treated wood, at about $10,500; capped composite averages $12,600, 1.2 times as much.
Cost to build a deck in Sioux Falls by size
With pressure-treated wood, priced for Sioux Falls, SD:
| Size | Average · range |
|---|---|
| A 200 sq ft deck$38 per sq ft | $7,500$5,150 – $9,900 |
| A 300 sq ft deck$35 per sq ft | $10,500$7,250 – $13,700 |
| A 400 sq ft deck$34 per sq ft | $13,400$9,350 – $17,500 |
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: $34 per sq ft for a 400 sq ft deck against $38 for a 200 sq ft deck.
What a deck building in Sioux Falls includes
Line by line, the $10,500 average for a 300 sq ft deck breaks down like this: 47% labor, 53% materials and equipment.
| Line | Low – high |
|---|---|
| Plans, permit and layout | $340 – $1,050 |
| Ground prep, fabric and gravel | $210 – $510 |
| Footings below the frost line | $380 – $770 |
| Flashed ledger on the house | $230 – $450 |
| 6x6 posts | $260 – $510 |
| Beams | $230 – $450 |
| Joist framing with hangers | $1,350 – $2,250 |
| Deck boards | $1,250 – $1,850 |
| One set of stairs (4 steps) | $480 – $960 |
| Railing | $1,750 – $3,050 |
| Fascia and skirting | $330 – $800 |
| Final inspection and cleanup | $140 – $340 |
| Stain and seal, two coats | $310 – $720 |
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 Sioux Falls's index of 0.93; permit fees are not scaled.
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What affects deck building prices in Sioux Falls
Labor and materials in Sioux Falls
Construction wages in the Sioux Falls metro run 13% below the U.S. mean (BLS, May 2025), and specialty-contractor pay in the city's county moves that up by 2%, to 11% below the national mean. Materials in the area's ZIP codes price right at the national average. Together they give Sioux Falls a construction cost index of 0.93.
Where Sioux Falls sits in South Dakota
Sioux Falls is the most expensive of the 3 South Dakota cities in our index, against a statewide index of 0.90. Rapid City is the least expensive at 0.90.
Against the rest of the country
Of the 306 U.S. cities in JobFlex's index, Sioux Falls ranks 231st from the most expensive. The job that averages $10,500 here averages $11,300 at the national rate.
Frost depth in South Dakota
Deck footings go below the frost line, or they heave by the second spring. The typical code frost depth in South Dakota is about 44 in. — deep holes, more concrete and more digging time than in the South. Your building department sets the exact figure.
The deck code in South Dakota
There is no statewide code; decks follow the International Residential Code as the cities and counties of South Dakota adopt it (Sioux Falls: 2024 IRC since July 2026, with 8-in. risers allowed; Rapid City: confirm locally). 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.
What decks are built of in South Dakota
Most used on decks in the Plains states: treated pine, then capped composite, then cedar.
Sales tax in South Dakota
South Dakota's base state sales tax is 4.2%, and cities and counties can add their own. South Dakota also taxes installation labor on real property, so ask whether a quote includes tax on the whole job. Prices on this page are before tax.
What a Sioux Falls contractor will ask before quoting
- Reuse the frame or rebuild?
- Height, railing style and stairs
- Board brand and color
Deck building cost in other South Dakota cities
A 300 sq ft deck with pressure-treated wood averages $10,500 in Sioux Falls; $10,100 in Rapid City, $10,100 in Pierre.
| City | Average · range |
|---|---|
| Rapid City, SD3% less | $10,100$7,000 – $13,200 |
| Pierre, SD3% less | $10,100$7,000 – $13,200 |
deck building price in Sioux Falls: questions
How much does it cost to build a deck in Sioux Falls, SD?
About $10,500 for a 300 sq ft deck with pressure-treated wood, and most Sioux Falls quotes fall between $7,250 and $13,700. That is 7% below the U.S. average, where the same job averages $11,300.
What is the deck price per square foot in Sioux Falls?
$24 to $46 per sq ft, about $35 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 Sioux Falls?
$9,350 to $17,500, about $13,400 on average, with pressure-treated wood — $34 per sq ft.
Do you need a permit for deck building in Sioux Falls?
Yes — a new deck needs a permit nearly everywhere, Sioux Falls included. In South Dakota, decks follow the International Residential Code as the cities and counties of South Dakota adopt it (Sioux Falls: 2024 IRC since July 2026, with 8-in. risers allowed; Rapid City: confirm locally). The prices on this page carry $340–$1,050 for plans, permit and layout.
Does the price include sales tax in South Dakota?
No. The prices here are before tax; South Dakota's base state rate is 4.2%, plus any local rate. South Dakota taxes installation labor too.
What decking do people choose in South Dakota?
Most used on decks in the Plains states: treated pine, then capped composite, then cedar.
Other home projects in Sioux Falls
Deck building cost in South Dakota
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 Sioux Falls's construction cost index of 0.93.
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 Sioux Falls, each on its own base: RSMeans residential 0.93, HUD 0.99, Craftsman 1.02. Treat any city figure as about ±5%; a contractor's quote for your house is the number to plan with.
Contractors in Sioux Falls 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