Home addition cost in Louisiana
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $33,700 – $68,300
- Per sq ft
- $111 – $222
- before permit
- Versus US midpoint
- −11%
- US $57,500
- Metros covered
- 9
Louisiana prices for home addition: $33,700 to $68,300 for 300 sq ft, or $111 to $222 per sq ft without the permit. The state midpoint is 11% below the national one. Local wages for carpenters are $24.00 an hour.
Inside Louisiana, the metros we cover range from $48,900 (Alexandria) to $54,600 (Baton Rouge) at the midpoint. Pick your closest city in the table for a tighter number.
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Estimated cost for 300 sq ft in Louisiana (statewide), standard level
$44,100 to $57,900
About $144 to $189 per sq ft before permits. Labor is about 65% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $14,600 | $19,100 |
| Labor | $28,600 | $37,500 |
| Permits and fees | $840 | $1,350 |
| Total | $44,100 | $57,900 |
Cost breakdown for 300 sq ft in Louisiana
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,200 | $16,900 | $22,500 | 33% |
| Labor | $22,000 | $33,000 | $44,100 | 65% |
| Permits and fees | $440 | $1,100 | $1,750 | 2% |
| Total | $33,700 | $51,000 | $68,300 | 100% |
Louisiana labor market for home addition
Statewide wages come from BLS's state-level estimates, which blend big cities with small towns and rural areas. 6 trades drive the labor line for this job, and the weighted ratio against the national wage level is 0.86 for Louisiana.
For carpenters (47-2031, weighted 50%) the local median is $24.00 an hour, which is 18% below the national $29.12. The middle half of them earn between $21.03 and $28.72 an hour. BLS counts 8,990 of them working in the state, 46.5 for every 10,000 jobs (US: 43.1), so the local bench is about average.
For cement masons and concrete finishers (47-2051, weighted 10%) the local median is $23.64 an hour, which is 14% below the national $27.41. The middle half of them earn between $19.54 and $30.00 an hour. BLS counts 910 of them working in the state, 4.7 for every 10,000 jobs (US: 13.3), so the local bench is thinner than average.
Electricians (47-2111), 10% of the weighting: a median of $29.59 an hour, in line with the US median of $30.38. The middle half of them earn between $23.51 and $35.02 an hour. About 10,550 work in the state. That is 54.5 per 10,000 jobs, compared with 48.7 nationally, so the supply of crews looks typical.
For plumbers, pipefitters and steamfitters (47-2152, weighted 10%) the local median is $30.62 an hour, which is in line with the national $30.67. The middle half of them earn between $24.40 and $35.99 an hour. BLS counts 8,360 of them working in the state, 43.2 for every 10,000 jobs (US: 30.0), so the local bench is deeper than average.
Drywall and ceiling tile installers (47-2081), 10% of the weighting: a median of $22.80 an hour, 20% below the US median of $28.33. The middle half of them earn between $16.01 and $29.20 an hour. About 310 work in the state. That is 1.6 per 10,000 jobs, compared with 5.3 nationally, so expect fewer local crews to bid.
For roofers (47-2181, weighted 10%) the local median is $23.44 an hour, which is 12% below the national $26.65. The middle half of them earn between $18.74 and $27.02 an hour. BLS counts 760 of them working in the state, 3.9 for every 10,000 jobs (US: 8.7), so the local bench is thinner than average.
A crew paid at the 75th percentile for carpenters ($28.72 an hour) would add about $3,100 to the statewide midpoint; one at the 25th percentile ($21.03) would take off about $1,950. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 1,934,900 jobs across Louisiana (May 2025), which is 1.2% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $21.03 | $24.00 | $28.72 | $29.12 | 0.82 | state |
| Cement masons and concrete finishers (47-2051) | 10% | $19.54 | $23.64 | $30.00 | $27.41 | 0.86 | state |
| Electricians (47-2111) | 10% | $23.51 | $29.59 | $35.02 | $30.38 | 0.97 | state |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $24.40 | $30.62 | $35.99 | $30.67 | 1.00 | state |
| Drywall and ceiling tile installers (47-2081) | 10% | $16.01 | $22.80 | $29.20 | $28.33 | 0.80 | state |
| Roofers (47-2181) | 10% | $18.74 | $23.44 | $27.02 | $26.65 | 0.88 | state |
| Blended | 100% | 0.86 | |||||
Home addition: what moves the price in Louisiana
Type of addition
A new room is $125-$250 per sq ft; a bump-out $85-$200; an attic conversion $50-$150; a garage conversion $50-$200 (HomeGuide).
Plumbing and fixtures
Adding a bathroom or kitchen drives the price up the most.
Permits
Construction permits run $500-$2,000, or $5-$21 per $1,000 of project cost (HomeGuide).
Foundation
A foundation, framing, roofing and matching exterior finishes all have to be built before the interior work starts.
Louisiana against its neighbors
Louisiana ranks 42 of 51 (the 50 states plus DC) for home addition, where 1 is the most expensive. The costliest is Hawaii at $76,300 and the cheapest Arkansas at $48,200, both for 300 sq ft at the midpoint. Louisiana sits at $51,000. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Mississippi | 130 miles away | $32,500 – $66,000 | $49,300 | −3% |
| Alabama | 310 miles away | $32,900 – $66,800 | $49,800 | −2% |
| Texas | 360 miles away | $33,600 – $68,200 | $50,900 | level |
| Arkansas | 360 miles away | $31,800 – $64,500 | $48,200 | −6% |
| Tennessee | 460 miles away | $33,800 – $68,600 | $51,200 | level |
Quality levels and sizes in Louisiana
The cited range is cut into three overlapping bands (basic, standard and premium) and scaled to statewide Louisiana wages and prices. The grid prices the same bands at 3 common sizes.
Basic
$33,700 to $47,600
Bump-out or simple room without plumbing
Standard
$44,100 to $57,900
Standard room addition with HVAC and electrical
Premium
$54,500 to $68,300
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $11,500 – $16,500 | $15,300 – $20,200 | $19,000 – $23,900 |
| 20x20 room (400 sq ft) | $44,800 – $63,100 | $58,500 – $76,800 | $72,200 – $90,500 |
| large suite (600 sq ft) | $67,000 – $94,100 | $87,400 – $114,500 | $107,500 – $135,000 |
Other Louisiana jobs that often go with home addition
The table prices neighboring jobs at their usual sizes using statewide Louisiana wages and prices. Against national midpoints, kitchen remodel comes out highest (−8%) and detached garage lowest (−11%), because each job leans on different trades.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,100 – $29,000 | −8% |
| Bathroom remodel | 45 sq ft | $4,250 – $21,200 | −9% |
| Detached garage | 576 sq ft | $25,800 – $51,800 | −11% |
| Roof replacement | 2,000 sq ft of roof | $5,400 – $11,200 | −11% |
Which Louisiana city is cheapest for home addition?
1 of the 9 metros sit above the statewide midpoint of $51,000, and the top-to-bottom gap is 12%. Each row prices the default size with that metro's own BLS wages and BEA price levels, so the gap between rows is real local variation rather than a flat markup.
| Metro | Range (300 sq ft) | Midpoint | vs. state |
|---|---|---|---|
| Baton Rouge, LA | $36,100 – $73,100 | $54,600 | +7% |
| New Orleans, LA | $33,800 – $68,500 | $51,100 | level |
| Lake Charles, LA | $33,100 – $67,100 | $50,100 | −2% |
| Lafayette, LA | $33,100 – $67,000 | $50,000 | −2% |
| Slidell, LA | $33,000 – $66,900 | $50,000 | −2% |
| Houma, LA | $32,800 – $66,500 | $49,700 | −3% |
| Shreveport, LA | $32,800 – $66,500 | $49,600 | −3% |
| Monroe, LA | $32,700 – $66,300 | $49,500 | −3% |
| Alexandria, LA | $32,300 – $65,500 | $48,900 | −4% |
Weather windows across Louisiana
Season matters for home addition. For each Louisiana metro below we took NOAA's 1991-2020 monthly normals from the nearest suitable station and counted comfortable months for digging and ground work.
New Orleans has the longest comfortable season of the metros we cover in Louisiana at 10 months (September through June); Shreveport has the shortest at 8 (October through May). Rainfall runs from 51 inches a year in Shreveport to 66 inches in Slidell.
We do not adjust prices by month, because we have no reliable published data on seasonal pricing. Timing is still worth raising when you collect bids.
| Metro | Jan avg low °F | Jul avg high °F | Precip (in/yr) | Comfortable months |
|---|---|---|---|---|
| New Orleans | 47 | 91 | 60 | 10: September through June |
| Baton Rouge | 42 | 92 | 62 | 9: September through May |
| Lafayette | 44 | 92 | 63 | 9: September through May |
| Shreveport | 37 | 94 | 51 | 8: October through May |
| Lake Charles | 43 | 92 | 60 | 9: September through May |
| Slidell | 42 | 90 | 66 | 10: September through June |
| Monroe | 37 | 93 | 55 | 9: September through May |
| Houma | 44 | 91 | 65 | 9: September through May |
| Alexandria | 39 | 92 | 61 | 10: September through June |
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Home addition in Louisiana: your questions
+How much does it cost to build a home addition in Louisiana?
$33,700 to $68,300 for 300 sq ft, using statewide wages and prices. Metro areas inside Louisiana can sit above or below that.
+Which city in Louisiana is cheapest for home addition?
Alexandria at about $48,900 (midpoint, 300 sq ft). The priciest is Baton Rouge at $54,600.
+Is home addition cheaper in Louisiana than the US average?
It is 11% cheaper: $51,000 against $57,500 for 300 sq ft at the midpoint.
+What share of the price is labor in Louisiana?
About 65% ($33,000). Materials are 33%. Statewide labor for this job is weighted 0.86x the national wage level.
+What do carpenters earn in Louisiana?
The BLS statewide median is $24.00 an hour, against $29.12 for the US. The 25th to 75th percentile range is $21.03 to $28.72.
+Where does Louisiana rank for home addition costs?
42nd most expensive of 51 (the 50 states plus DC) at the midpoint, $51,000 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium home addition work cost in Louisiana?
For 300 sq ft, basic work runs $33,700 to $47,600 and premium work $54,500 to $68,300. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+Does the season matter for home addition in Louisiana?
Yes where winters or summers are hard. Of the Louisiana metros we cover, New Orleans has the most comfortable months (10 of 12) based on NOAA 1991-2020 normals. Our prices do not change by month, so ask contractors whether they charge more or less in busy and slow seasons.
Home addition by city in Louisiana
Where these numbers come from
Base prices are national ranges from the sources below. We scale labor by local BLS wages, materials by BEA goods prices and permits by the BEA all-items price level. Full method on the methodology page.
- HomeGuide: How Much Does a Home Addition Cost? (2026) (accessed November 4, 2026)
- Cost to Renovate: Renovation Labor Report 2026: Where the Money Goes (accessed November 4, 2026)
- HomeGuide: 2026 Building Permit Costs | Fees & Cost Calculator (accessed November 4, 2026)
- BLS Occupational Employment and Wage Statistics, May 2025
- BEA Regional Price Parities, 2024
- NOAA NCEI U.S. Climate Normals, 1991-2020
Note on derived figures: Materials = 32% of the installed price, from Cost to Renovate's mid-range 'Structural' category split (56% labor, 32% materials, 11% permits and design). It is a category average rather than an addition-specific figure.