Home addition cost in Oklahoma City, OK
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $32,900 – $66,800
- Per sq ft
- $108 – $216
- before permit
- Versus US midpoint
- −13%
- US $57,500
- Rank of 300 metros
- #247
- 1 = most expensive
If you want to build a home addition in Oklahoma City, plan on $32,900 to $66,800 for 300 sq ft, all in. Per sq ft, that is $108 to $216 for materials and labor, with the permit on top. The local midpoint runs 13% lower than the national one. Carpenters earn a median of $23.53 an hour in the Oklahoma City area, 19% below the US median of $29.12.
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Estimated cost for 300 sq ft in Oklahoma City, OK, standard level
$43,100 to $56,600
About $141 to $184 per sq ft before permits. Labor is about 64% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $14,600 | $19,100 |
| Labor | $27,600 | $36,100 |
| Permits and fees | $860 | $1,400 |
| Total | $43,100 | $56,600 |
Cost breakdown for 300 sq ft in Oklahoma City, OK
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,300 | $16,900 | $22,500 | 34% |
| Labor | $21,200 | $31,800 | $42,400 | 64% |
| Permits and fees | $450 | $1,150 | $1,800 | 2% |
| Total | $32,900 | $49,800 | $66,800 | 100% |
What is behind the Oklahoma City number
We price the labor side from BLS wage data for 6 trades: carpenters at 50%, cement masons and concrete finishers at 10%, electricians at 10%, plumbers, pipefitters and steamfitters at 10%, drywall and ceiling tile installers at 10%, roofers at 10%. Weighted together, Oklahoma City wages are 0.83 times the national level. Labor makes up about 64% of the midpoint estimate (67% at national prices).
On the materials line, the BEA goods price index for the Oklahoma City metro is 93.8 (US = 100). The midpoint materials bill for 300 sq ft comes to $16,900, compared with $18,000 at national prices. Permit and inspection fees are scaled by the broader index (90.4) and land at $450 to $1,800.
Pick a size, pick a tier: home addition pricing in Oklahoma City
Three bands are cut from the same cited range and localized for Oklahoma City 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
$32,900 to $46,500
Bump-out or simple room without plumbing
Standard
$43,100 to $56,600
Standard room addition with HVAC and electrical
Premium
$53,200 to $66,800
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $11,300 – $16,100 | $14,900 – $19,800 | $18,600 – $23,500 |
| 20x20 room (400 sq ft) | $43,700 – $61,600 | $57,100 – $75,000 | $70,500 – $88,400 |
| large suite (600 sq ft) | $65,400 – $91,900 | $85,300 – $112,000 | $105,000 – $131,500 |
How Oklahoma City compares
Of the five closest metros, 3 are cheaper than Oklahoma City. Fort Smith is the lowest at about $45,900 (midpoint, 300 sq ft), 170 miles away.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Oklahoma City, OKthis page | $32,900 – $66,800 | $49,800 | |
| Tulsa, OK95 miles | $32,800 – $66,400 | $49,600 | level |
| Wichita, KS155 miles | $33,900 – $68,700 | $51,300 | +3% |
| Fort Smith, AR170 miles | $30,300 – $61,500 | $45,900 | −8% |
| Dallas, TX180 miles | $34,400 – $69,800 | $52,100 | +5% |
| Fayetteville, AR200 miles | $32,400 – $65,800 | $49,100 | −1% |
| Oklahoma (statewide) | $32,400 – $65,700 | $49,000 | −2% |
| United States | $38,000 – $77,000 | $57,500 | +15% |
Across 300 US metros, Oklahoma City comes in at #247 from the top. The priciest is Honolulu, HI at $79,600; the cheapest is Brownsville, TX at $44,300 (midpoints, 300 sq ft). Statewide, Oklahoma City is 2% above the Oklahoma figure.
Other Oklahoma metros
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Tulsa, OK | 458,730 jobs | $32,800 – $66,400 | $49,600 | level |
Cities with a workforce like Oklahoma City's
Big cities and small ones price differently, so here is Oklahoma City against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Louisville, KY | 685,190 jobs | $36,000 – $73,000 | $54,500 | +9% |
| Richmond, VA | 660,350 jobs | $34,300 – $69,700 | $52,000 | +4% |
| Providence, RI | 714,120 jobs | $39,300 – $79,700 | $59,500 | +19% |
| Memphis, TN | 611,670 jobs | $33,900 – $68,700 | $51,300 | +3% |
Climate in Oklahoma City: timing your home addition job
We use NOAA's 1991-2020 climate normals for Oklahoma City Will Rogers Ap (5 miles from the city center). These are 30-year monthly averages, not forecasts.
March through June and September through November are the stretches where digging, grading and setting material in the ground runs into the fewest weather problems in Oklahoma City (7 of 12 months). January, February and December have an average overnight low at or below freezing (32°F); July and August have an average daytime high of 90°F or more.
In January, February and December the average low is at or below freezing, which means frozen ground and slower digging, compaction and sod or stone placement. NOAA counts about 72 days a year with a low at or below 32°F at this station.
Oklahoma City gets about 36 inches of precipitation in a normal year, including roughly 7 inches of snow. The wettest months are May, June and September (5.3 inches in May). Inside the workable window, March and November are the driest, at 2.5 and 1.7 inches. The station averages about 74 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 | 49 | 27 | 1.3 | Cold |
| Feb | 54 | 31 | 1.4 | Cold |
| Mar | 63 | 40 | 2.5 | Workable |
| Apr | 71 | 48 | 3.6 | Workable |
| May | 79 | 58 | 5.3 | Workable |
| Jun | 88 | 66 | 4.5 | Workable |
| Jul | 93 | 70 | 3.6 | Hot |
| Aug | 92 | 69 | 3.6 | Hot |
| Sep | 84 | 62 | 3.7 | Workable |
| Oct | 73 | 49 | 3.3 | Workable |
| Nov | 61 | 38 | 1.7 | Workable |
| Dec | 50 | 30 | 1.8 | Cold |
Planning more than one job in Oklahoma City?
Because every project leans on different trades, Oklahoma City's wage level does not move all prices equally. Against the US midpoint, kitchen remodel runs −8% and roof replacement −15%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,000 – $29,000 | −8% |
| Bathroom remodel | 45 sq ft | $4,200 – $20,900 | −10% |
| Detached garage | 576 sq ft | $25,600 – $51,400 | −12% |
| Roof replacement | 2,000 sq ft of roof | $5,100 – $10,700 | −15% |
Why two Oklahoma City quotes can differ
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.
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).
Oklahoma City 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 Oklahoma City is 0.83 times the national level.
For carpenters (47-2031, weighted 50%) the local median is $23.53 an hour, which is 19% below the national $29.12. The middle half of them earn between $21.13 and $27.60 an hour. BLS counts 1,420 of them working in the area, 21.0 for every 10,000 jobs (US: 43.1), so the local bench is thinner than average.
For cement masons and concrete finishers (47-2051, weighted 10%) the local median is $22.57 an hour, which is 18% below the national $27.41. The middle half of them earn between $19.44 and $24.44 an hour. BLS counts 1,210 of them working in the area, 17.9 for every 10,000 jobs (US: 13.3), so the local bench is deeper than average.
Electricians (47-2111), 10% of the weighting: a median of $29.33 an hour, 3% below the US median of $30.38. The middle half of them earn between $22.51 and $36.89 an hour. About 3,100 work in the metro. That is 45.7 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 $28.44 an hour, which is 7% below the national $30.67. The middle half of them earn between $22.73 and $38.02 an hour. BLS counts 2,400 of them working in the area, 35.4 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 $22.00 an hour, 22% below the US median of $28.33. The middle half of them earn between $22.00 and $23.26 an hour. About 130 work in the metro. That is 1.9 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 $21.00 an hour, which is 21% below the national $26.65. The middle half of them earn between $18.40 and $23.74 an hour. BLS counts 710 of them working in the area, 10.5 for every 10,000 jobs (US: 8.7), so the local bench is deeper than average.
Quotes come from real crews, not medians. If the carpenters on your job are paid at the 75th percentile ($27.60 an hour) instead of the median, the labor line grows by about $2,650. At the 25th percentile ($21.13) it shrinks by about $1,600. The total moves by 5.4% or 3.2%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 677,680 jobs in the Oklahoma City area. That makes it the 44th largest of the 300 metros we cover, with 0.44% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $21.13 | $23.53 | $27.60 | $29.12 | 0.81 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $19.44 | $22.57 | $24.44 | $27.41 | 0.82 | metro |
| Electricians (47-2111) | 10% | $22.51 | $29.33 | $36.89 | $30.38 | 0.97 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $22.73 | $28.44 | $38.02 | $30.67 | 0.93 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $22.00 | $22.00 | $23.26 | $28.33 | 0.78 | metro |
| Roofers (47-2181) | 10% | $18.40 | $21.00 | $23.74 | $26.65 | 0.79 | metro |
| Blended | 100% | 0.83 | |||||
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 $43,100 to $56,600 for Oklahoma City, OK is attached.
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Multi-page report for Oklahoma City, OK: 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 City: your questions
+How much does it cost to build a home addition in Oklahoma City?
For 300 sq ft, expect $32,900 to $66,800 in the Oklahoma City area. A standard-spec job lands at $43,100 to $56,600. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Oklahoma City?
About $108 to $216 per sq ft for materials and labor, plus $450 to $1,800 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Oklahoma City or Tulsa?
Tulsa is 95 miles away. The midpoint for 300 sq ft there is $49,600, which is 0% less than Oklahoma City ($49,800). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Oklahoma City?
About 64% at the midpoint, or $31,800 out of $49,800. Materials are 34% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Oklahoma City?
$43,700 to $88,400. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Oklahoma City?
Often, but rules are set by your city or county building office, so call before you hire. Budget $450 to $1,800 for fees in the Oklahoma City area (our national range of $500 to $2,000 scaled by the local price level).
+Is Oklahoma City expensive for home addition compared with the rest of Oklahoma?
Oklahoma City is 2% above the Oklahoma statewide estimate ($49,000 at the midpoint). We cover 2 metros in Oklahoma; see the state page to compare them.
+What do carpenters earn in Oklahoma City?
The BLS median is $23.53 an hour in the Oklahoma City area, compared with $29.12 nationally. The 25th to 75th percentile range is $21.13 to $27.60.
+What do basic and premium home addition work cost in Oklahoma City?
For 300 sq ft, basic work runs $32,900 to $46,500 and premium work $53,200 to $66,800. Basic means: bump-out or simple room without plumbing. Premium means: large addition with bath or kitchen and a new foundation.
+When is the best time to build a home addition in Oklahoma City?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are March through June and September through November. March and November are typically the driest of those months. Local contractors' schedules matter as much as the weather, so book early for the busy months.
Home addition near Oklahoma City
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.