Home addition cost in Grand Junction, CO
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $36,500 – $74,000
- Per sq ft
- $120 – $240
- before permit
- Versus US midpoint
- −4%
- US $57,500
- Rank of 300 metros
- #140
- 1 = most expensive
A home addition in Grand Junction, CO usually costs $36,500 to $74,000 for 300 sq ft. That works out to about $120 to $240 per sq ft before permits. Compared with the national midpoint that is $2,250 less. Carpenters earn a median of $28.96 an hour in the Grand Junction area, 1% below the US median of $29.12.
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Estimated cost for 300 sq ft in Grand Junction, CO, standard level
$47,800 to $62,800
About $156 to $204 per sq ft before permits. Labor is about 67% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,600 |
| Labor | $31,900 | $41,700 |
| Permits and fees | $910 | $1,500 |
| Total | $47,800 | $62,800 |
Cost breakdown for 300 sq ft in Grand Junction, CO
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,500 | $17,300 | $23,100 | 31% |
| Labor | $24,500 | $36,800 | $49,000 | 67% |
| Permits and fees | $480 | $1,200 | $1,900 | 2% |
| Total | $36,500 | $55,300 | $74,000 | 100% |
What is behind the Grand Junction number
The wage side of the estimate leans on carpenters, who do 50% of the hours on a typical job. Their local median is $28.96 an hour. Add the other trades involved and the blended wage index for Grand Junction is 0.96 (US = 1.00), which puts labor at 67% of the total.
Materials are scaled with BEA's regional price parity for goods. Grand Junction is at 96.1 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 95.5: $480 to $1,900.
How Grand Junction compares
Of the five closest metros, 2 are cheaper than Grand Junction. Provo is the lowest at about $52,400 (midpoint, 300 sq ft), 215 miles away.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Grand Junction, COthis page | $36,500 – $74,000 | $55,300 | |
| Boulder, CO180 miles | $37,800 – $76,600 | $57,200 | +3% |
| Denver, CO195 miles | $39,500 – $80,100 | $59,800 | +8% |
| Fort Collins, CO195 miles | $36,700 – $74,500 | $55,600 | +1% |
| Colorado Springs, CO205 miles | $36,400 – $73,700 | $55,100 | level |
| Provo, UT215 miles | $34,600 – $70,200 | $52,400 | −5% |
| Colorado (statewide) | $38,400 – $77,800 | $58,100 | +5% |
| United States | $38,000 – $77,000 | $57,500 | +4% |
Out of the 300 metros we cover, Grand Junction ranks #140 for the cost of this job (#1 is the most expensive). Statewide, Grand Junction is 5% below the Colorado figure.
Elsewhere in Colorado
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Denver, CO | 1,609,350 jobs | $39,500 – $80,100 | $59,800 | +8% |
| Colorado Springs, CO | 316,060 jobs | $36,400 – $73,700 | $55,100 | level |
| Boulder, CO | 192,390 jobs | $37,800 – $76,600 | $57,200 | +3% |
| Fort Collins, CO | 169,430 jobs | $36,700 – $74,500 | $55,600 | +1% |
| Greeley, CO | 119,540 jobs | $36,700 – $74,300 | $55,500 | level |
| Pueblo, CO | 61,780 jobs | $36,100 – $73,200 | $54,600 | −1% |
Metros of a similar size
Big cities and small ones price differently, so here is Grand Junction against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Morgantown, WV | 67,370 jobs | $34,400 – $69,600 | $52,000 | −6% |
| Missoula, MT | 67,070 jobs | $38,300 – $77,500 | $57,900 | +5% |
| Winchester, VA | 67,740 jobs | $34,000 – $68,900 | $51,500 | −7% |
| Logan, UT | 66,800 jobs | $33,700 – $68,400 | $51,100 | −8% |
Why two Grand Junction quotes can differ
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).
Plumbing and fixtures
Adding a bathroom or kitchen drives the price up the most.
Pick a size, pick a tier: home addition pricing in Grand Junction
The cited range is split into basic, standard and premium bands, then scaled to Grand Junction. 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
$36,500 to $51,500
Bump-out or simple room without plumbing
Standard
$47,800 to $62,800
Standard room addition with HVAC and electrical
Premium
$59,000 to $74,000
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $12,500 – $17,900 | $16,500 – $21,900 | $20,600 – $25,900 |
| 20x20 room (400 sq ft) | $48,500 – $68,300 | $63,400 – $83,200 | $78,200 – $98,000 |
| large suite (600 sq ft) | $72,600 – $102,000 | $94,600 – $124,000 | $116,500 – $146,000 |
What local crews earn in Grand Junction
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 Grand Junction the blend is 0.96.
Carpenters (47-2031), 50% of the weighting: a median of $28.96 an hour, in line with the US median of $29.12. The middle half of them earn between $23.51 and $32.86 an hour. About 340 work in the metro. That is 50.6 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 $26.74 an hour, in line with the US median of $27.41. The middle half of them earn between $22.17 and $28.43 an hour. About 150 work in the metro. That is 22.3 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 $27.19 an hour, which is 11% below the national $30.38. The middle half of them earn between $21.86 and $34.56 an hour. BLS counts 430 of them working in the area, 64.0 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 $29.53 an hour, 4% below the US median of $30.67. The middle half of them earn between $23.65 and $35.99 an hour. About 300 work in the metro. That is 44.7 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 $25.64 an hour, which is 9% below the national $28.33. The middle half of them earn between $20.82 and $27.14 an hour. BLS counts 50 of them working in the area, 7.4 for every 10,000 jobs (US: 5.3), so the local bench is deeper than average.
Roofers (47-2181), 10% of the weighting: a median of $24.10 an hour, 10% below the US median of $26.65. The middle half of them earn between $22.16 and $25.49 an hour. About 60 work in the metro. That is 8.9 per 10,000 jobs, compared with 8.7 nationally, so the supply of crews looks typical.
A quick sensitivity check: moving the lead trade (carpenters) from the median to the 75th percentile wage adds about $2,550 to the midpoint estimate; the 25th percentile takes off about $3,600. That is a swing of roughly 6.5% to 4.6% of the total, which is useful for judging whether a bid reflects wages or something else, such as scope or margin.
Grand Junction has 67,170 jobs in total (BLS, May 2025), ranking 269th 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% | $23.51 | $28.96 | $32.86 | $29.12 | 0.99 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $22.17 | $26.74 | $28.43 | $27.41 | 0.98 | metro |
| Electricians (47-2111) | 10% | $21.86 | $27.19 | $34.56 | $30.38 | 0.89 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $23.65 | $29.53 | $35.99 | $30.67 | 0.96 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $20.82 | $25.64 | $27.14 | $28.33 | 0.91 | metro |
| Roofers (47-2181) | 10% | $22.16 | $24.10 | $25.49 | $26.65 | 0.90 | metro |
| Blended | 100% | 0.96 | |||||
Grand Junction weather and the home addition calendar
Climate numbers on this page come from NOAA's 1991-2020 U.S. Climate Normals at the nearest suitable station, Grand Junction Walker Fld (5 miles from the city center). 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 Grand Junction are April through June and September through October: 5 of 12. Outside them, January, February, March, November and December have an average overnight low at or below freezing (32°F), and July and August have an average daytime high of 90°F or more.
In January, February, March, 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 137 days a year with a low at or below 32°F at this station.
Grand Junction gets about 9 inches of precipitation in a normal year, including roughly 18 inches of snow. The wettest months are April, September and October (1.2 inches in September). Inside the workable window, May and June are the driest, at 0.8 and 0.4 inches. The station averages about 68 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 | 38 | 17 | 0.6 | Cold |
| Feb | 46 | 24 | 0.5 | Cold |
| Mar | 58 | 32 | 0.8 | Cold |
| Apr | 66 | 38 | 1.0 | Workable |
| May | 77 | 47 | 0.8 | Workable |
| Jun | 89 | 57 | 0.4 | Workable |
| Jul | 95 | 64 | 0.6 | Hot |
| Aug | 91 | 62 | 0.9 | Hot |
| Sep | 82 | 53 | 1.2 | Workable |
| Oct | 67 | 40 | 1.0 | Workable |
| Nov | 52 | 28 | 0.6 | Cold |
| Dec | 39 | 18 | 0.6 | Cold |
What nearby projects cost in Grand Junction
Jobs that often go together with home addition are priced below at their usual sizes, using the same Grand Junction wage and price inputs. Compared with national midpoints, bathroom remodel comes out highest (−3%) and roof replacement lowest (−7%); the gap comes from the trades each job uses.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,800 – $30,300 | −4% |
| Bathroom remodel | 45 sq ft | $4,600 – $22,700 | −3% |
| Detached garage | 576 sq ft | $27,900 – $55,900 | −4% |
| Roof replacement | 2,000 sq ft of roof | $5,650 – $11,700 | −7% |
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Home addition in Grand Junction: your questions
+How much does it cost to build a home addition in Grand Junction?
For 300 sq ft, expect $36,500 to $74,000 in the Grand Junction area. A standard-spec job lands at $47,800 to $62,800. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Grand Junction?
About $120 to $240 per sq ft for materials and labor, plus $480 to $1,900 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Grand Junction or Boulder?
Boulder is 180 miles away. The midpoint for 300 sq ft there is $57,200, which is 3% more than Grand Junction ($55,300). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Grand Junction?
About 67% at the midpoint, or $36,800 out of $55,300. Materials are 31% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Grand Junction?
$48,500 to $98,000. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Grand Junction?
Often, but rules are set by your city or county building office, so call before you hire. Budget $480 to $1,900 for fees in the Grand Junction area (our national range of $500 to $2,000 scaled by the local price level).
+Is Grand Junction expensive for home addition compared with the rest of Colorado?
Grand Junction is 5% below the Colorado statewide estimate ($58,100 at the midpoint). We cover 7 metros in Colorado; see the state page to compare them.
+What do carpenters earn in Grand Junction?
The BLS median is $28.96 an hour in the Grand Junction area, compared with $29.12 nationally. The 25th to 75th percentile range is $23.51 to $32.86.
+What do basic and premium home addition work cost in Grand Junction?
For 300 sq ft, basic work runs $36,500 to $51,500 and premium work $59,000 to $74,000. 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 Grand Junction?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are April through June and September through October. May and June 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 Grand Junction
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.