Deck Building Cost in Chattanooga, TN (2026)
Updated October 2026 · Chattanooga, TN · index 0.93
How much does it cost to build a deck in Chattanooga? For a 300 sq ft deck with pressure-treated wood, homeowners in Chattanooga, TN 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 Chattanooga runs 7% below the U.S. average: construction labor in the Chattanooga area runs 12% below the national mean, materials 1% below. The same job averages $11,300 nationally and about $10,400 at the Tennessee statewide index.
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Deck building price in Chattanooga by decking material
What a 300 sq ft deck costs in Chattanooga 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 Chattanooga is pressure-treated wood, at about $10,500; capped composite averages $12,600, 1.2 times as much.
Cost to build a deck in Chattanooga by size
With pressure-treated wood, priced for Chattanooga, TN:
| 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 Chattanooga 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 Chattanooga's index of 0.93; permit fees are not scaled.
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What affects deck building prices in Chattanooga
Labor and materials in Chattanooga
Construction wages in the Chattanooga metro run 13% below the U.S. mean (BLS, May 2025), and specialty-contractor pay in the city's county moves that up by 1%, to 12% below the national mean. Materials in the area's ZIP codes price 1% below the national average. Together they give Chattanooga a construction cost index of 0.93.
Where Chattanooga sits in Tennessee
Chattanooga is the 3rd most expensive of the 6 Tennessee cities in our index, against a statewide index of 0.92. Nashville is the dearest at 0.96; Knoxville is the least expensive at 0.91.
Against the rest of the country
Of the 306 U.S. cities in JobFlex's index, Chattanooga ranks 231st from the most expensive. The job that averages $10,500 here averages $11,300 at the national rate.
Frost depth in Tennessee
Deck footings go below the frost line, or they heave by the second spring. The typical code frost depth in Tennessee is about 12 in.. Your building department sets the exact figure.
The deck code in Tennessee
Decks here are built to the Tennessee residential code (2018 IRC, adopted by the State Fire Marshal's Office; a city may adopt its own). 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. Nashville has enforced the 2024 IRC since July 16, 2025; Knox County the 2018 IRC.
What decks are built of in Tennessee
Most used on decks in Alabama, Kentucky, Mississippi and Tennessee: treated pine, then capped composite, then cedar.
Sales tax in Tennessee
Tennessee's base state sales tax is 7%, 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 Chattanooga contractor will ask before quoting
- Reuse the frame or rebuild?
- Height, railing style and stairs
- Board brand and color
Deck building cost in other Tennessee cities
A 300 sq ft deck with pressure-treated wood averages $10,500 in Chattanooga; $10,200 in Knoxville, $10,500 in Memphis, $10,500 in Murfreesboro.
| City | Average · range |
|---|---|
| Knoxville, TN2% less | $10,200$7,100 – $13,400 |
| Memphis, TNsame as Chattanooga | $10,500$7,250 – $13,700 |
| Murfreesboro, TNsame as Chattanooga | $10,500$7,250 – $13,700 |
| Franklin, TN3% more | $10,800$7,450 – $14,100 |
| Nashville, TN3% more | $10,800$7,450 – $14,100 |
deck building price in Chattanooga: questions
How much does it cost to build a deck in Chattanooga, TN?
About $10,500 for a 300 sq ft deck with pressure-treated wood, and most Chattanooga 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 Chattanooga?
$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 Chattanooga?
$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 Chattanooga?
Yes — a new deck needs a permit nearly everywhere, Chattanooga included. In Tennessee, decks follow the Tennessee residential code (2018 IRC, adopted by the State Fire Marshal's Office; a city may adopt its own). The prices on this page carry $340–$1,050 for plans, permit and layout.
Does the price include sales tax in Tennessee?
No. The prices here are before tax; Tennessee's base state rate is 7%, plus any local rate.
What decking do people choose in Tennessee?
Most used on decks in Alabama, Kentucky, Mississippi and Tennessee: treated pine, then capped composite, then cedar.
Other home projects in Chattanooga
Deck building cost in Tennessee
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 Chattanooga'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 Chattanooga, each on its own base: HUD 0.92, Craftsman 1.03. Treat any city figure as about ±5%; a contractor's quote for your house is the number to plan with.
Contractors in Chattanooga 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