Home addition cost in Bozeman, MT
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $40,000 – $81,000
- Per sq ft
- $132 – $263
- before permit
- Versus US midpoint
- +5%
- US $57,500
- Rank of 300 metros
- #71
- 1 = most expensive
Local price for a home addition in the Bozeman area: $40,000 to $81,000 for 300 sq ft. The low end is a basic job on easy ground; the high end is a premium spec with harder access. The midpoint runs 5% higher than the US figure. Carpenters earn a median of $30.02 an hour in the Bozeman area, 3% above the US median of $29.12.
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Estimated cost for 300 sq ft in Bozeman, MT, standard level
$52,300 to $68,700
About $171 to $224 per sq ft before permits. Labor is about 69% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,600 |
| Labor | $36,300 | $47,500 |
| Permits and fees | $970 | $1,600 |
| Total | $52,300 | $68,700 |
Cost breakdown for 300 sq ft in Bozeman, MT
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,500 | $17,300 | $23,000 | 29% |
| Labor | $28,000 | $41,900 | $55,900 | 69% |
| Permits and fees | $510 | $1,300 | $2,050 | 2% |
| Total | $40,000 | $60,500 | $81,000 | 100% |
Why Bozeman prices look the way they do
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, Bozeman wages are 1.10 times the national level. Labor makes up about 69% of the midpoint estimate (67% at national prices).
Materials are scaled with BEA's regional price parity for goods. Bozeman is at 96.0 against 100 for the US, so a materials line of $18,000 nationally becomes $17,300 here (midpoint, 300 sq ft). Permits follow the all-items index of 102.5: $510 to $2,050.
Data note: 10% of the labor weighting for this project uses a statewide median because BLS has no published metro figure for that trade in Bozeman. The wage table below marks each row.
Who does the work: Bozeman trade wages
The labor line is built from BLS wage data, one trade at a time. This job draws on 6 trades. We compare each trade's local median with the US median, weight the ratios by how much of the job each trade does, and apply the blend to the national labor cost. For Bozeman the blend is 1.10.
Carpenters (47-2031), 50% of the weighting: a median of $30.02 an hour, 3% above the US median of $29.12. The middle half of them earn between $28.28 and $36.07 an hour. About 900 work in the metro. That is 124.6 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 $30.90 an hour, 13% above the US median of $27.41. The middle half of them earn between $29.88 and $33.80 an hour. About 160 work in the metro. That is 22.2 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 $37.61 an hour, which is 24% above the national $30.38. The middle half of them earn between $29.76 and $41.72 an hour. BLS counts 440 of them working in the area, 60.9 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 $39.09 an hour, 27% above the US median of $30.67. The middle half of them earn between $30.06 and $43.02 an hour. About 350 work in the metro. That is 48.5 per 10,000 jobs, compared with 30.0 nationally, which suggests plenty of local crews to bid.
Drywall and ceiling tile installers (47-2081) carry 10% of the labor weighting. BLS does not publish this trade for the Bozeman metro, so we used the Montana statewide median: $28.92 an hour against $28.33 for the US. The middle half of them earn between $23.34 and $31.63 an hour.
Roofers (47-2181), 10% of the weighting: a median of $30.56 an hour, 15% above the US median of $26.65. The middle half of them earn between $24.86 and $34.45 an hour. About 40 work in the metro. That is 5.5 per 10,000 jobs, compared with 8.7 nationally, so expect fewer local crews to bid.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $3,950 to the midpoint estimate; the 25th percentile takes off about $1,150. That is a swing of roughly 1.9% to 6.6% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Bozeman has 72,210 jobs in total (BLS, May 2025), ranking 256th by size among the 300 metros on this site.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $28.28 | $30.02 | $36.07 | $29.12 | 1.03 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $29.88 | $30.90 | $33.80 | $27.41 | 1.13 | metro |
| Electricians (47-2111) | 10% | $29.76 | $37.61 | $41.72 | $30.38 | 1.24 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $30.06 | $39.09 | $43.02 | $30.67 | 1.27 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $23.34 | $28.92 | $31.63 | $28.33 | 1.02 | state |
| Roofers (47-2181) | 10% | $24.86 | $30.56 | $34.45 | $26.65 | 1.15 | metro |
| Blended | 100% | 1.10 | |||||
The best months for home addition in Bozeman
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Bozeman Montana State Univ (in the city). They are 30-year averages, so any one year can run hotter, colder or wetter.
For digging, grading and setting material in the ground, the comfortable months in Bozeman are May through September: 5 of 12. Outside them, January, February, March, April, October, November and December have an average overnight low at or below freezing (32°F).
In January, February, March, April, October, November 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 178 days a year with a low at or below 32°F at this station.
Bozeman gets about 20 inches of precipitation in a normal year, including roughly 91 inches of snow. The wettest months are April, May and June (3.3 inches in June). Inside the workable window, July and August are the driest, at 1.3 and 1.3 inches. The station averages about 12 days a year at 90°F or above.
We do not adjust the estimate by month, because we have no reliable published data on seasonal pricing. It is still worth asking contractors whether an off-peak start date changes their bid.
| Month | Avg high °F | Avg low °F | Precip (in) | For this job |
|---|---|---|---|---|
| Jan | 34 | 15 | 0.9 | Cold |
| Feb | 37 | 17 | 0.8 | Cold |
| Mar | 46 | 24 | 1.4 | Cold |
| Apr | 55 | 31 | 2.5 | Cold |
| May | 63 | 39 | 2.9 | Workable |
| Jun | 72 | 46 | 3.3 | Workable |
| Jul | 82 | 52 | 1.3 | Workable |
| Aug | 81 | 50 | 1.3 | Workable |
| Sep | 71 | 42 | 1.4 | Workable |
| Oct | 57 | 32 | 1.8 | Cold |
| Nov | 42 | 22 | 1.3 | Cold |
| Dec | 33 | 15 | 1.0 | Cold |
Is Bozeman cheap or dear? The local comparison
Of the five closest metros, all are cheaper than Bozeman. Logan is the lowest at about $51,100 (midpoint, 300 sq ft), 255 miles away.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Bozeman, MTthis page | $40,000 – $81,000 | $60,500 | |
| Billings, MT115 miles | $38,700 – $78,400 | $58,600 | −3% |
| Idaho Falls, ID145 miles | $34,500 – $69,900 | $52,200 | −14% |
| Missoula, MT185 miles | $38,300 – $77,500 | $57,900 | −4% |
| Logan, UT255 miles | $33,700 – $68,400 | $51,100 | −16% |
| Boise, ID300 miles | $34,700 – $70,400 | $52,500 | −13% |
| Montana (statewide) | $38,700 – $78,400 | $58,600 | −3% |
| United States | $38,000 – $77,000 | $57,500 | −5% |
Out of the 300 metros we cover, Bozeman ranks #71 for the cost of this job (#1 is the most expensive). Statewide, Bozeman is 3% above the Montana figure.
Elsewhere in Montana
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Billings, MT | 93,800 jobs | $38,700 – $78,400 | $58,600 | −3% |
| Missoula, MT | 67,070 jobs | $38,300 – $77,500 | $57,900 | −4% |
Metros of a similar size
Big cities and small ones price differently, so here is Bozeman against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Bangor, ME | 72,270 jobs | $35,900 – $72,900 | $54,400 | −10% |
| Redding, CA | 71,550 jobs | $41,700 – $84,500 | $63,100 | +4% |
| Coeur d'Alene, ID | 72,280 jobs | $35,700 – $72,300 | $54,000 | −11% |
| Bismarck, ND | 71,270 jobs | $35,600 – $72,100 | $53,800 | −11% |
Cost by quality level and size in Bozeman
The cited range is split into basic, standard and premium bands, then scaled to Bozeman. Bands overlap, because plenty of standard jobs cost as much as a light premium one. Sizes run from bump-out (100 sq ft) to large suite (600 sq ft).
Basic
$40,000 to $56,400
Bump-out or simple room without plumbing
Standard
$52,300 to $68,700
Standard room addition with HVAC and electrical
Premium
$64,600 to $81,000
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $13,700 – $19,500 | $18,100 – $24,000 | $22,500 – $28,400 |
| 20x20 room (400 sq ft) | $53,100 – $74,800 | $69,400 – $91,100 | $85,600 – $107,500 |
| large suite (600 sq ft) | $79,500 – $111,500 | $103,500 – $136,000 | $128,000 – $160,000 |
Home addition: what moves the price in Bozeman
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).
Planning more than one job in Bozeman?
Jobs that often go together with home addition are priced below at their usual sizes, using the same Bozeman wage and price inputs. Compared with national midpoints, roof replacement comes out highest (+8%) and kitchen remodel lowest (−1%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $18,400 – $31,300 | −1% |
| Bathroom remodel | 45 sq ft | $4,950 – $24,600 | +6% |
| Detached garage | 576 sq ft | $29,900 – $60,100 | +3% |
| Roof replacement | 2,000 sq ft of roof | $6,700 – $13,400 | +8% |
Get 3 local quotes
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Home addition in Bozeman: your questions
+How much does it cost to build a home addition in Bozeman?
For 300 sq ft, expect $40,000 to $81,000 in the Bozeman area. A standard-spec job lands at $52,300 to $68,700. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Bozeman?
About $132 to $263 per sq ft for materials and labor, plus $510 to $2,050 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Bozeman or Billings?
Billings is 115 miles away. The midpoint for 300 sq ft there is $58,600, which is 3% less than Bozeman ($60,500). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Bozeman?
About 69% at the midpoint, or $41,900 out of $60,500. Materials are 29% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Bozeman?
$53,100 to $107,500. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Bozeman?
Often, but rules are set by your city or county building office, so call before you hire. Budget $510 to $2,050 for fees in the Bozeman area (our national range of $500 to $2,000 scaled by the local price level).
+Is Bozeman expensive for home addition compared with the rest of Montana?
Bozeman is 3% above the Montana statewide estimate ($58,600 at the midpoint). We cover 3 metros in Montana; see the state page to compare them.
+What do carpenters earn in Bozeman?
The BLS median is $30.02 an hour in the Bozeman area, compared with $29.12 nationally. The 25th to 75th percentile range is $28.28 to $36.07.
+What do basic and premium home addition work cost in Bozeman?
For 300 sq ft, basic work runs $40,000 to $56,400 and premium work $64,600 to $81,000. 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 Bozeman?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are May through September. July and August 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 Bozeman
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.