Home addition cost in North Dakota
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $36,600 – $74,100
- Per sq ft
- $120 – $241
- before permit
- Versus US midpoint
- −4%
- US $57,500
- Metros covered
- 2
Across North Dakota, a home addition costs about $36,600 to $74,100 for 300 sq ft. Statewide, that midpoint is 4% below the US figure of $57,500. Carpenters earn a median $27.83 an hour in North Dakota (US: $29.12).
Inside North Dakota, the metros we cover range from $53,800 (Bismarck) to $56,600 (Fargo) at the midpoint.
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Estimated cost for 300 sq ft in North Dakota (statewide), standard level
$47,800 to $62,800
About $157 to $205 per sq ft before permits. Labor is about 67% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $14,900 | $19,500 |
| Labor | $32,100 | $41,900 |
| Permits and fees | $850 | $1,400 |
| Total | $47,800 | $62,800 |
Cost breakdown for 300 sq ft in North Dakota
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,500 | $17,200 | $23,000 | 31% |
| Labor | $24,700 | $37,000 | $49,300 | 67% |
| Permits and fees | $440 | $1,100 | $1,800 | 2% |
| Total | $36,600 | $55,300 | $74,100 | 100% |
How North Dakota compares with nearby states
North Dakota ranks 28 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. North Dakota sits at $55,300. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| South Dakota | 220 miles away | $33,000 – $66,900 | $49,900 | −10% |
| Minnesota | 270 miles away | $42,200 – $85,400 | $63,800 | +15% |
| Nebraska | 410 miles away | $33,700 – $68,300 | $51,000 | −8% |
| Iowa | 450 miles away | $35,900 – $72,700 | $54,300 | −2% |
| Wyoming | 500 miles away | $36,100 – $73,000 | $54,600 | −1% |
Why two North Dakota 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 North Dakota
Each project weights the trades differently, so North Dakota's wage level does not push every price by the same amount. Compared with the US midpoint, roof replacement is +3% and bathroom remodel −6%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,600 – $30,000 | −5% |
| Bathroom remodel | 45 sq ft | $4,400 – $21,800 | −6% |
| Detached garage | 576 sq ft | $28,300 – $56,900 | −2% |
| Roof replacement | 2,000 sq ft of roof | $6,350 – $12,700 | +3% |
What carpenters and the other trades earn in North Dakota
North Dakota'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 0.97 times the national level.
Carpenters (47-2031), 50% of the weighting: a median of $27.83 an hour, 4% below the US median of $29.12. The middle half of them earn between $23.47 and $30.55 an hour. About 2,360 work in the state. That is 55.0 per 10,000 jobs, compared with 43.1 nationally, which suggests plenty of local crews to bid.
Cement masons and concrete finishers (47-2051), 10% of the weighting: a median of $27.74 an hour, in line with the US median of $27.41. The middle half of them earn between $24.14 and $29.53 an hour. About 1,190 work in the state. That is 27.7 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 $31.59 an hour, which is 4% above the national $30.38. The middle half of them earn between $27.36 and $38.71 an hour. BLS counts 3,570 of them working in the state, 83.1 for every 10,000 jobs (US: 48.7), so the local bench is deeper than average.
Plumbers, pipefitters and steamfitters (47-2152), 10% of the weighting: a median of $30.56 an hour, in line with the US median of $30.67. The middle half of them earn between $23.92 and $36.95 an hour. About 1,620 work in the state. That is 37.7 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 $21.69 an hour, which is 23% below the national $28.33. The middle half of them earn between $21.13 and $23.31 an hour. BLS counts 130 of them working in the state, 3.0 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 $28.72 an hour, 8% above the US median of $26.65. The middle half of them earn between $23.08 and $34.68 an hour. About 290 work in the state. That is 6.8 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 ($30.55 an hour) would add about $1,800 to the statewide midpoint; one at the 25th percentile ($23.47) would take off about $2,850. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 429,430 jobs across North Dakota (May 2025), which is 0.3% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $23.47 | $27.83 | $30.55 | $29.12 | 0.96 | state |
| Cement masons and concrete finishers (47-2051) | 10% | $24.14 | $27.74 | $29.53 | $27.41 | 1.01 | state |
| Electricians (47-2111) | 10% | $27.36 | $31.59 | $38.71 | $30.38 | 1.04 | state |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $23.92 | $30.56 | $36.95 | $30.67 | 1.00 | state |
| Drywall and ceiling tile installers (47-2081) | 10% | $21.13 | $21.69 | $23.31 | $28.33 | 0.77 | state |
| Roofers (47-2181) | 10% | $23.08 | $28.72 | $34.68 | $26.65 | 1.08 | state |
| Blended | 100% | 0.97 | |||||
North Dakota metro-by-metro prices
1 of the 2 metros sit above the statewide midpoint of $55,300, and the top-to-bottom gap is 5%. 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 |
|---|---|---|---|
| Fargo, ND | $37,400 – $75,800 | $56,600 | +2% |
| Bismarck, ND | $35,600 – $72,100 | $53,800 | −3% |
Basic, standard or premium: North Dakota 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
$36,600 to $51,600
Bump-out or simple room without plumbing
Standard
$47,800 to $62,800
Standard room addition with HVAC and electrical
Premium
$59,100 to $74,100
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $12,500 – $17,800 | $16,500 – $21,900 | $20,500 – $25,900 |
| 20x20 room (400 sq ft) | $48,600 – $68,400 | $63,500 – $83,300 | $78,400 – $98,200 |
| large suite (600 sq ft) | $72,700 – $102,000 | $94,800 – $124,500 | $117,000 – $146,500 |
Weather windows across North Dakota
Weather decides when digging and ground work can happen, and North Dakota 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 North Dakota metro on the list has 6 comfortable months, though rainfall ranges from 19 inches a year in Bismarck to 24 in Fargo.
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 |
|---|---|---|---|---|
| Fargo | 0 | 82 | 24 | 6: May through October |
| Bismarck | 2 | 85 | 19 | 6: May through October |
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Home addition in North Dakota: your questions
+How much does it cost to build a home addition in North Dakota?
$36,600 to $74,100 for 300 sq ft, using statewide wages and prices. Metro areas inside North Dakota can sit above or below that.
+Which city in North Dakota is cheapest for home addition?
Bismarck at about $53,800 (midpoint, 300 sq ft). The priciest is Fargo at $56,600.
+Is home addition cheaper in North Dakota than the US average?
It is 4% cheaper: $55,300 against $57,500 for 300 sq ft at the midpoint.
+What share of the price is labor in North Dakota?
About 67% ($37,000). Materials are 31%. Statewide labor for this job is weighted 0.97x the national wage level.
+What do carpenters earn in North Dakota?
The BLS statewide median is $27.83 an hour, against $29.12 for the US. The 25th to 75th percentile range is $23.47 to $30.55.
+Where does North Dakota rank for home addition costs?
28th most expensive of 51 (the 50 states plus DC) at the midpoint, $55,300 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium home addition work cost in North Dakota?
For 300 sq ft, basic work runs $36,600 to $51,600 and premium work $59,100 to $74,100. 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 North Dakota?
Yes where winters or summers are hard. Of the North Dakota metros we cover, Fargo has the most comfortable months (6 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 North Dakota
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.