Cost to Build a Deck in Louisiana (2026)
A 12×16 ft deck in Louisiana runs about $3,838 in pressure-treated pine and $8,636 in composite, installed — 6% below the US average. Here is what moves that number in Louisiana, with a calculator priced for the state.
Pressure-treated pine
$18–$24 /sq ft
Cedar
$27–$35 /sq ft
Composite
$40–$52 /sq ft
Deck cost calculator for Louisiana
Priced with Louisiana labour, material and footing-depth factors. Change any input and the estimate updates.
Estimated installed cost
$7,600 – $9,932
192 sq ft · about $44.98/sq ft
- Materials
- $5,426
- Labour
- $3,210
- Footings (12 in deep)
- 3 × about $128
- Frost-depth adjustment
- −$115
Mid-range estimate for a rectangular deck attached to the house, with one beam line per 12 ft of depth and footings every 8 ft. Excludes demolition, permits and site work. For railing, stairs and a full line-item breakdown use the main deck cost calculator.
Louisiana deck cost by size and material
Mid-range installed prices for a standard-height deck attached to the house, including framing, footings at the local depth and hardware. Railing and stairs are priced separately in the main deck cost calculator.
| Deck size | Pressure-treated pine | Cedar | Composite |
|---|---|---|---|
| 10 × 10 ft (100 sq ft) | $1,944 | $2,906 | $4,443 |
| 12 × 12 ft (144 sq ft) | $2,850 | $4,235 | $6,448 |
| 12 × 16 ft (192 sq ft) | $3,838 | $5,685 | $8,636 |
| 16 × 20 ft (320 sq ft) | $6,282 | $9,359 | $14,279 |
| 20 × 20 ft (400 sq ft) | $7,930 | $11,776 | $17,925 |
What drives deck prices in Louisiana
Labour
Labour is the biggest regional variable. Carpentry labour in Louisiana runs 10% below the national level, so a composite 12×16 that averages $9,216 nationally comes to about $8,636 here. On pressure-treated decks labour is more than half the bill, so the regional gap is widest on the cheapest material.
Climate
Heat, very high humidity, heavy rain and Formosan termites. Hurricanes bring both wind and flood.
Footings and frost depth
Footings in Louisiana typically go 12 inches deep. At 12 inches each 12 inch footing costs roughly $128 installed, and a 12×16 deck needs about 3 of them — a saving of $115 against the 24 inch depth national prices assume.
Which decking makes sense here
Our pick for most Louisiana homes: composite. Rot and termites shorten wood deck life so much that composite on treated framing usually pays back early. Composite adds about $4,798 to a 12×16 deck over pressure-treated — see the full 20-year comparison in the composite vs wood calculator.
Permits and code in Louisiana
The Louisiana State Uniform Construction Code (IRC-based) applies statewide. Coastal parishes require hurricane-rated connections, and flood zones can dictate deck height and foundations.
Typical deck permit fees: $100–$400. Expect a footing inspection before concrete, a framing inspection before the decking goes down and a final. Estimate your fee with the deck permit cost calculator, and read our deck permit guide for what the drawings need to show.
Best time to build a deck in Louisiana
October to April.
Compare neighbouring states
- Texas — 12×16 pressure-treated about $3,867 (−6% vs US)
- Arkansas — 12×16 pressure-treated about $3,662 (−10% vs US)
- Mississippi — 12×16 pressure-treated about $3,558 (−10% vs US)
Frequently asked questions
How much does it cost to build a deck in Louisiana?
A typical 12×16 ft (192 sq ft) deck in Louisiana costs about $3,838 installed in pressure-treated pine, $5,685 in cedar and $8,636 in composite. That is $18–$24 per square foot for pressure-treated and $40–$52 for composite — 6% below the US average.
Is a composite deck worth it in Louisiana?
On a 12×16 deck composite costs about $4,798 more than pressure-treated up front. Rot and termites shorten wood deck life so much that composite on treated framing usually pays back early. Composite needs no staining, which saves a refinishing cycle every two to three years on wood.
Do I need a permit to build a deck in Louisiana?
The Louisiana State Uniform Construction Code (IRC-based) applies statewide. Coastal parishes require hurricane-rated connections, and flood zones can dictate deck height and foundations. Where a permit is required, fees typically run $100–$400. Under the model residential code, a freestanding deck under 200 sq ft and no more than 30 inches above grade that does not serve an exit door is often exempt — attaching it to the house removes that exemption.
How deep do deck footings need to be in Louisiana?
Typically 12 inches. At about 12 inches, each 12 inch footing costs roughly $128 installed, compared with $167 at a 24 inch depth. Confirm the exact depth with your building department before digging.
When is the best time to build a deck in Louisiana?
October to April. Booking a builder outside the spring rush often gets a faster start date and a keener price.
Is Louisiana expensive for deck building compared with other states?
Louisiana ranks 9 of 50 from cheapest to most expensive on our index. Carpentry labour runs 10% below the national level and materials 2% below it, which puts a typical deck 6% below the US average.
Price the rest of the project
How these figures are made: national installed prices per square foot, split into materials and labour and adjusted by a Louisiana labour index (reasoned from BLS state carpenter wage data), a material and freight index, and the local footing depth. They are planning estimates — get two or three itemised local quotes. Method.