Home addition cost in Oklahoma
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $32,400 – $65,700
- Per sq ft
- $107 – $213
- before permit
- Versus US midpoint
- −15%
- US $57,500
- Metros covered
- 2
Across Oklahoma, a home addition costs about $32,400 to $65,700 for 300 sq ft. Statewide, that midpoint is 15% below the US figure of $57,500. Carpenters earn a median $22.55 an hour in Oklahoma (US: $29.12).
Inside Oklahoma, the metros we cover range from $49,600 (Tulsa) to $49,800 (Oklahoma City) at the midpoint.
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 Oklahoma (statewide), standard level
$42,400 to $55,700
About $138 to $181 per sq ft before permits. Labor is about 63% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $14,600 | $19,100 |
| Labor | $26,900 | $35,200 |
| Permits and fees | $830 | $1,350 |
| Total | $42,400 | $55,700 |
Cost breakdown for 300 sq ft in Oklahoma
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,300 | $16,900 | $22,500 | 34% |
| Labor | $20,700 | $31,100 | $41,400 | 63% |
| Permits and fees | $440 | $1,100 | $1,750 | 2% |
| Total | $32,400 | $49,000 | $65,700 | 100% |
Basic, standard or premium: Oklahoma prices
Bands overlap on purpose, since a good standard job can cost as much as a light premium one. Below are the three bands for the default size, then a grid from bump-out (100 sq ft) to large suite (600 sq ft).
Basic
$32,400 to $45,700
Bump-out or simple room without plumbing
Standard
$42,400 to $55,700
Standard room addition with HVAC and electrical
Premium
$52,400 to $65,700
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) | $43,000 – $60,600 | $56,200 – $73,800 | $69,400 – $87,000 |
| large suite (600 sq ft) | $64,400 – $90,400 | $83,900 – $110,000 | $103,500 – $129,500 |
Why two Oklahoma quotes can differ
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.
If you are planning more than one job in Oklahoma
Each project weights the trades differently, so Oklahoma's wage level does not push every price by the same amount. Compared with the US midpoint, kitchen remodel is −9% and roof replacement −15%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $16,900 – $28,800 | −9% |
| Bathroom remodel | 45 sq ft | $4,150 – $20,700 | −11% |
| Detached garage | 576 sq ft | $25,300 – $50,800 | −13% |
| Roof replacement | 2,000 sq ft of roof | $5,100 – $10,700 | −15% |
What carpenters and the other trades earn in Oklahoma
Oklahoma's labor line is priced from 6 trades, each compared with its US median wage. After weighting by each trade's share of the work, the state comes out at 0.81 times the national level.
Carpenters (47-2031), 50% of the weighting: a median of $22.55 an hour, 23% below the US median of $29.12. The middle half of them earn between $19.37 and $25.72 an hour. About 3,820 work in the state. That is 22.4 per 10,000 jobs, compared with 43.1 nationally, so expect fewer local crews to bid.
Cement masons and concrete finishers (47-2051), 10% of the weighting: a median of $22.00 an hour, 20% below the US median of $27.41. The middle half of them earn between $18.98 and $23.58 an hour. About 2,980 work in the state. That is 17.5 per 10,000 jobs, compared with 13.3 nationally, which suggests plenty of local crews to bid.
For electricians (47-2111, weighted 10%) the local median is $29.33 an hour, which is 3% below the national $30.38. The middle half of them earn between $22.90 and $36.78 an hour. BLS counts 8,500 of them working in the state, 49.8 for every 10,000 jobs (US: 48.7), so the local bench is about average.
Plumbers, pipefitters and steamfitters (47-2152), 10% of the weighting: a median of $27.87 an hour, 9% below the US median of $30.67. The middle half of them earn between $21.78 and $35.69 an hour. About 6,050 work in the state. That is 35.4 per 10,000 jobs, compared with 30.0 nationally, which suggests plenty of local crews to bid.
For drywall and ceiling tile installers (47-2081, weighted 10%) the local median is $22.15 an hour, which is 22% below the national $28.33. The middle half of them earn between $22.00 and $23.26 an hour. BLS counts 280 of them working in the state, 1.6 for every 10,000 jobs (US: 5.3), so the local bench is thinner than average.
Roofers (47-2181), 10% of the weighting: a median of $21.00 an hour, 21% below the US median of $26.65. The middle half of them earn between $18.40 and $26.74 an hour. About 1,260 work in the state. That is 7.4 per 10,000 jobs, compared with 8.7 nationally, so expect fewer local crews to bid.
A crew paid at the 75th percentile for carpenters ($25.72 an hour) would add about $2,100 to the statewide midpoint; one at the 25th percentile ($19.37) would take off about $2,100. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 1,707,680 jobs across Oklahoma (May 2025), which is 1.1% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $19.37 | $22.55 | $25.72 | $29.12 | 0.77 | state |
| Cement masons and concrete finishers (47-2051) | 10% | $18.98 | $22.00 | $23.58 | $27.41 | 0.80 | state |
| Electricians (47-2111) | 10% | $22.90 | $29.33 | $36.78 | $30.38 | 0.97 | state |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $21.78 | $27.87 | $35.69 | $30.67 | 0.91 | state |
| Drywall and ceiling tile installers (47-2081) | 10% | $22.00 | $22.15 | $23.26 | $28.33 | 0.78 | state |
| Roofers (47-2181) | 10% | $18.40 | $21.00 | $26.74 | $26.65 | 0.79 | state |
| Blended | 100% | 0.81 | |||||
Oklahoma metro-by-metro prices
2 of the 2 metros sit above the statewide midpoint of $49,000, and the top-to-bottom gap is 0%. 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 |
|---|---|---|---|
| Oklahoma City, OK | $32,900 – $66,800 | $49,800 | +2% |
| Tulsa, OK | $32,800 – $66,400 | $49,600 | +1% |
When Oklahoma weather lets you build
Weather decides when digging and ground work can happen, and Oklahoma is not uniform. The table uses NOAA's 1991-2020 climate normals from the weather station nearest each metro we cover, and counts the months that are neither cold nor hot enough to complicate the job.
Every Oklahoma metro on the list has 7 comfortable months, though rainfall ranges from 36 inches a year in Oklahoma City to 41 in Tulsa.
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 |
|---|---|---|---|---|
| Oklahoma City | 27 | 93 | 36 | 7: March through June and September through November |
| Tulsa | 28 | 94 | 41 | 7: March through June and September through November |
Oklahoma against its neighbors
Oklahoma ranks 50 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. Oklahoma sits at $49,000. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Kansas | 160 miles away | $35,200 – $71,300 | $53,300 | +9% |
| Arkansas | 220 miles away | $31,800 – $64,500 | $48,200 | −2% |
| Missouri | 320 miles away | $37,800 – $76,500 | $57,200 | +17% |
| Texas | 330 miles away | $33,600 – $68,200 | $50,900 | +4% |
| Nebraska | 380 miles away | $33,700 – $68,300 | $51,000 | +4% |
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 $55,700 for Oklahoma is attached.
Detailed home addition report for Oklahoma, $9
Multi-page report for Oklahoma: low, typical and high cost, a line-item breakdown of materials and labor by trade, permit notes, the best months to schedule, a quote comparison sheet, red flags, questions for contractors, checklists and every source. 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 Oklahoma: your questions
+How much does it cost to build a home addition in Oklahoma?
$32,400 to $65,700 for 300 sq ft, using statewide wages and prices. Metro areas inside Oklahoma can sit above or below that.
+Which city in Oklahoma is cheapest for home addition?
Tulsa at about $49,600 (midpoint, 300 sq ft). The priciest is Oklahoma City at $49,800.
+Is home addition cheaper in Oklahoma than the US average?
It is 15% cheaper: $49,000 against $57,500 for 300 sq ft at the midpoint.
+What share of the price is labor in Oklahoma?
About 63% ($31,100). Materials are 34%. Statewide labor for this job is weighted 0.81x the national wage level.
+What do carpenters earn in Oklahoma?
The BLS statewide median is $22.55 an hour, against $29.12 for the US. The 25th to 75th percentile range is $19.37 to $25.72.
+Where does Oklahoma rank for home addition costs?
50th most expensive of 51 (the 50 states plus DC) at the midpoint, $49,000 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium home addition work cost in Oklahoma?
For 300 sq ft, basic work runs $32,400 to $45,700 and premium work $52,400 to $65,700. 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 Oklahoma?
Yes where winters or summers are hard. Of the Oklahoma metros we cover, Oklahoma City has the most comfortable months (7 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 Oklahoma
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.