Home addition cost in Auburn, AL
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $32,400 – $65,800
- Per sq ft
- $107 – $213
- before permit
- Versus US midpoint
- −15%
- US $57,500
- Rank of 300 metros
- #268
- 1 = most expensive
If you want to build a home addition in Auburn, plan on $32,400 to $65,800 for 300 sq ft, all in. Per sq ft, that is $107 to $213 for materials and labor, with the permit on top. The local midpoint runs 15% lower than the national one. Carpenters earn a median of $22.89 an hour in the Auburn area, 21% below the US median of $29.12.
Estimate your home addition cost
Pick a size, a quality level and where you live. Prices update as you type.
Estimated cost for 300 sq ft in Auburn, AL, standard level
$42,400 to $55,800
About $139 to $181 per sq ft before permits. Labor is about 62% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,700 |
| Labor | $26,600 | $34,700 |
| Permits and fees | $840 | $1,350 |
| Total | $42,400 | $55,800 |
Cost breakdown for 300 sq ft in Auburn, AL
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,600 | $17,400 | $23,100 | 35% |
| Labor | $20,400 | $30,700 | $40,900 | 62% |
| Permits and fees | $440 | $1,100 | $1,750 | 2% |
| Total | $32,400 | $49,100 | $65,800 | 100% |
What is behind the Auburn number
Labor is 62% of the midpoint bill here, against 67% nationally. The mix of trades behind this job is carpenters (50%), cement masons and concrete finishers (10%), electricians (10%), plumbers, pipefitters and steamfitters (10%), drywall and ceiling tile installers (10%), roofers (10%). We weight each trade's local median wage by that share and compare it with the national median. In Auburn the blended ratio comes out at 0.80.
On the materials line, the BEA goods price index for the Auburn metro is 96.4 (US = 100). The midpoint materials bill for 300 sq ft comes to $17,400, compared with $18,000 at national prices. Permit and inspection fees are scaled by the broader index (87.9) and land at $440 to $1,750.
Data note: 30% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Auburn. The wage table below marks each row.
Pick a size, pick a tier: home addition pricing in Auburn
Three bands are cut from the same cited range and localized for Auburn wages and prices. They overlap on purpose: a good standard job and a modest premium job can cost the same. The grid below prices the same bands at 3 common sizes.
Basic
$32,400 to $45,800
Bump-out or simple room without plumbing
Standard
$42,400 to $55,800
Standard room addition with HVAC and electrical
Premium
$52,400 to $65,800
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $11,100 – $15,900 | $14,700 – $19,500 | $18,300 – $23,100 |
| 20x20 room (400 sq ft) | $43,100 – $60,700 | $56,300 – $73,900 | $69,500 – $87,100 |
| large suite (600 sq ft) | $64,400 – $90,600 | $84,000 – $110,000 | $103,500 – $130,000 |
How Auburn compares
Contractors rarely work more than an hour or two from home, so the neighboring metros set a rough ceiling and floor for your quotes. Midpoints for 300 sq ft range from $46,300 to $50,900 across Auburn and its five closest metros.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Auburn, ALthis page | $32,400 – $65,800 | $49,100 | |
| Columbus, GA40 miles | $31,800 – $64,500 | $48,200 | −2% |
| Montgomery, AL50 miles | $32,500 – $65,800 | $49,200 | level |
| Dothan, AL85 miles | $31,000 – $62,900 | $46,900 | −4% |
| Birmingham, AL100 miles | $33,700 – $68,200 | $50,900 | +4% |
| Albany, GA100 miles | $30,600 – $62,100 | $46,300 | −6% |
| Alabama (statewide) | $32,900 – $66,800 | $49,800 | +2% |
| United States | $38,000 – $77,000 | $57,500 | +17% |
Across 300 US metros, Auburn comes in at #268 from the top. The priciest is Honolulu, HI at $79,600; the cheapest is Brownsville, TX at $44,300 (midpoints, 300 sq ft). Statewide, Auburn is 1% below the Alabama figure.
Other Alabama metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Birmingham, AL | 520,290 jobs | $33,700 – $68,200 | $50,900 | +4% |
| Huntsville, AL | 266,650 jobs | $33,200 – $67,300 | $50,200 | +2% |
| Mobile, AL | 172,550 jobs | $33,300 – $67,500 | $50,400 | +3% |
| Montgomery, AL | 165,550 jobs | $32,500 – $65,800 | $49,200 | level |
| Tuscaloosa, AL | 108,460 jobs | $33,100 – $67,100 | $50,100 | +2% |
| Daphne, AL | 87,120 jobs | $32,400 – $65,800 | $49,100 | level |
Cities with a workforce like Auburn's
Big cities and small ones price differently, so here is Auburn against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Bloomington, IN | 73,240 jobs | $38,600 – $78,200 | $58,400 | +19% |
| Prescott Valley, AZ | 72,300 jobs | $35,100 – $71,200 | $53,100 | +8% |
| Kahului, HI | 73,750 jobs | $49,400 – $99,900 | $74,600 | +52% |
| Coeur d'Alene, ID | 72,280 jobs | $35,700 – $72,300 | $54,000 | +10% |
Climate in Auburn: timing your home addition job
We use NOAA's 1991-2020 climate normals for Auburn No.2 (5 miles from the city center). These are 30-year monthly averages, not forecasts.
Weather is not a serious constraint for digging, grading and setting material in the ground in Auburn: no month in the averages is cold enough (an average overnight low at or below freezing (32°F)) or hot enough (an average daytime high of 90°F or more) to rule it out, so the workable window is all year.
Auburn gets about 56 inches of precipitation in a normal year. The wettest months are March, June and December (5.7 inches in March). The station averages about 49 days a year at 90°F or above.
Does the season change the price? Probably, but we do not have a sourced seasonal price curve, so the estimator shows a year-round figure and does not adjust by month. When you collect quotes, ask whether scheduling in a slower month gets a better rate.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 56 | 35 | 5.3 | Workable |
| Feb | 61 | 39 | 5.1 | Workable |
| Mar | 68 | 45 | 5.7 | Workable |
| Apr | 75 | 51 | 4.8 | Workable |
| May | 81 | 60 | 4.0 | Workable |
| Jun | 87 | 68 | 5.7 | Workable |
| Jul | 89 | 71 | 4.8 | Workable |
| Aug | 88 | 71 | 4.3 | Workable |
| Sep | 84 | 66 | 3.5 | Workable |
| Oct | 75 | 54 | 3.4 | Workable |
| Nov | 65 | 43 | 4.2 | Workable |
| Dec | 58 | 38 | 5.6 | Workable |
Auburn labor market for home addition
Wages are the part of this estimate that changes most from town to town. 6 trades carry the job here, and each is compared with its US median. The weighted result for Auburn is 0.80 times the national level.
For carpenters (47-2031, weighted 50%) the local median is $22.89 an hour, which is 21% below the national $29.12. The middle half of them earn between $20.02 and $26.50 an hour. BLS counts 200 of them working in the area, 27.5 for every 10,000 jobs (US: 43.1), so the local bench is thinner than average.
Cement masons and concrete finishers (47-2051) carry 10% of the labor weighting. BLS does not publish this trade for the Auburn metro, so we used the Alabama statewide median: $21.50 an hour against $27.41 for the US. The middle half of them earn between $17.96 and $26.36 an hour.
Electricians (47-2111), 10% of the weighting: a median of $25.89 an hour, 15% below the US median of $30.38. The middle half of them earn between $22.29 and $29.93 an hour. About 230 work in the metro. That is 31.6 per 10,000 jobs, compared with 48.7 nationally, so expect fewer local crews to bid.
For plumbers, pipefitters and steamfitters (47-2152, weighted 10%) the local median is $24.79 an hour, which is 19% below the national $30.67. The middle half of them earn between $21.03 and $29.26 an hour. BLS counts 200 of them working in the area, 27.5 for every 10,000 jobs (US: 30.0), so the local bench is about average.
Drywall and ceiling tile installers (47-2081) carry 10% of the labor weighting. BLS does not publish this trade for the Auburn metro, so we used the Alabama statewide median: $23.08 an hour against $28.33 for the US. The middle half of them earn between $20.04 and $24.75 an hour.
Roofers (47-2181) carry 10% of the labor weighting. BLS does not publish this trade for the Auburn metro, so we used the Alabama statewide median: $21.96 an hour against $26.65 for the US. The middle half of them earn between $20.36 and $25.64 an hour.
Quotes come from real crews, not medians. If the carpenters on your job are paid at the 75th percentile ($26.50 an hour) instead of the median, the labor line grows by about $2,350. At the 25th percentile ($20.02) it shrinks by about $1,900. The total moves by 4.8% or 3.8%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 72,710 jobs in the Auburn-Opelika area. That makes it the 252nd largest of the 300 metros we cover, with 0.05% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $20.02 | $22.89 | $26.50 | $29.12 | 0.79 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $17.96 | $21.50 | $26.36 | $27.41 | 0.78 | state |
| Electricians (47-2111) | 10% | $22.29 | $25.89 | $29.93 | $30.38 | 0.85 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $21.03 | $24.79 | $29.26 | $30.67 | 0.81 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $20.04 | $23.08 | $24.75 | $28.33 | 0.81 | state |
| Roofers (47-2181) | 10% | $20.36 | $21.96 | $25.64 | $26.65 | 0.82 | state |
| Blended | 100% | 0.80 | |||||
Planning more than one job in Auburn?
Because every project leans on different trades, Auburn's wage level does not move all prices equally. Against the US midpoint, kitchen remodel runs −7% and roof replacement −13%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,200 – $29,200 | −7% |
| Bathroom remodel | 45 sq ft | $4,100 – $20,400 | −12% |
| Detached garage | 576 sq ft | $25,400 – $51,000 | −12% |
| Roof replacement | 2,000 sq ft of roof | $5,200 – $11,000 | −13% |
Specs and site conditions that change a Auburn bid
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.
Get 3 local quotes
Tell us about the job and we will try to connect you with up to three local contractors for written quotes. It is free and you are under no obligation to hire. Your estimate of $42,400 to $55,800 for Auburn, AL is attached.
Detailed home addition report for Auburn, AL, $9
The report lays out the home addition numbers for Auburn, AL line by line, with the local wage and price inputs, permit and timing notes, a quote comparison sheet and the full method. Save your estimate above, preview page 1 free, and unlock the full report for $9 one-time, or get every report with CostLocal Pro.
Home addition in Auburn: your questions
+How much does it cost to build a home addition in Auburn?
For 300 sq ft, expect $32,400 to $65,800 in the Auburn area. A standard-spec job lands at $42,400 to $55,800. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Auburn?
About $107 to $213 per sq ft for materials and labor, plus $440 to $1,750 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Auburn or Columbus?
Columbus is 40 miles away. The midpoint for 300 sq ft there is $48,200, which is 2% less than Auburn ($49,100). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Auburn?
About 62% at the midpoint, or $30,700 out of $49,100. Materials are 35% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Auburn?
$43,100 to $87,100. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Auburn?
Often, but rules are set by your city or county building office, so call before you hire. Budget $440 to $1,750 for fees in the Auburn area (our national range of $500 to $2,000 scaled by the local price level).
+Is Auburn expensive for home addition compared with the rest of Alabama?
Auburn is 1% below the Alabama statewide estimate ($49,800 at the midpoint). We cover 9 metros in Alabama; see the state page to compare them.
+What do carpenters earn in Auburn?
The BLS median is $22.89 an hour in the Auburn area, compared with $29.12 nationally. The 25th to 75th percentile range is $20.02 to $26.50.
+What do basic and premium home addition work cost in Auburn?
For 300 sq ft, basic work runs $32,400 to $45,800 and premium work $52,400 to $65,800. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+Is there a bad season to build a home addition in Auburn?
Not from a temperature point of view. NOAA's 1991-2020 normals show no month with a freezing-level overnight low or a 90°F-plus average high, so timing is mostly about contractor availability and rain.
Home addition near Auburn
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.