Home addition cost in Colorado
Statewide estimate from BLS wages and BEA prices. Reviewed Nov 4, 2026.
- Statewide range (300 sq ft)
- $38,400 – $77,800
- Per sq ft
- $126 – $253
- before permit
- Versus US midpoint
- +1%
- US $57,500
- Metros covered
- 7
What does it cost to build a home addition in Colorado? Plan on $38,400 to $77,800 for 300 sq ft. Wages (1.02x the US blend), materials (price index 98.7) and permit costs (103.1) put the state above the national midpoint by 1%.
Inside Colorado, the metros we cover range from $54,600 (Pueblo) to $59,800 (Denver) at the midpoint. Pick your closest city in the table for a tighter number.
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Estimated cost for 300 sq ft in Colorado (statewide), standard level
$50,200 to $66,000
About $164 to $215 per sq ft before permits. Labor is about 67% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,400 | $20,100 |
| Labor | $33,800 | $44,300 |
| Permits and fees | $980 | $1,600 |
| Total | $50,200 | $66,000 |
Cost breakdown for 300 sq ft in Colorado
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,800 | $17,800 | $23,700 | 31% |
| Labor | $26,000 | $39,100 | $52,100 | 67% |
| Permits and fees | $520 | $1,300 | $2,050 | 2% |
| Total | $38,400 | $58,100 | $77,800 | 100% |
Related projects, priced for Colorado
The table prices neighboring jobs at their usual sizes using statewide Colorado wages and prices. Against national midpoints, bathroom remodel comes out highest (+1%) and roof replacement lowest (−4%), because each job leans on different trades.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $18,400 – $31,400 | level |
| Bathroom remodel | 45 sq ft | $4,750 – $23,500 | +1% |
| Detached garage | 576 sq ft | $29,100 – $58,400 | level |
| Roof replacement | 2,000 sq ft of roof | $5,850 – $12,100 | −4% |
Colorado labor market for home addition
Statewide wages come from BLS's state-level estimates, which blend big cities with small towns and rural areas. 6 trades drive the labor line for this job, and the weighted ratio against the national wage level is 1.02 for Colorado.
For carpenters (47-2031, weighted 50%) the local median is $30.21 an hour, which is 4% above the national $29.12. The middle half of them earn between $24.97 and $35.78 an hour. BLS counts 12,740 of them working in the state, 44.3 for every 10,000 jobs (US: 43.1), so the local bench is about average.
For cement masons and concrete finishers (47-2051, weighted 10%) the local median is $29.18 an hour, which is 6% above the national $27.41. The middle half of them earn between $23.59 and $31.70 an hour. BLS counts 5,140 of them working in the state, 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 $29.92 an hour, in line with the US median of $30.38. The middle half of them earn between $23.50 and $37.73 an hour. About 17,010 work in the state. That is 59.2 per 10,000 jobs, compared with 48.7 nationally, which suggests plenty of local crews to bid.
For plumbers, pipefitters and steamfitters (47-2152, weighted 10%) the local median is $30.40 an hour, which is in line with the national $30.67. The middle half of them earn between $25.18 and $37.86 an hour. BLS counts 10,080 of them working in the state, 35.1 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 $29.70 an hour, 5% above the US median of $28.33. The middle half of them earn between $23.43 and $33.77 an hour. About 1,560 work in the state. That is 5.4 per 10,000 jobs, compared with 5.3 nationally, so the supply of crews looks typical.
For roofers (47-2181, weighted 10%) the local median is $24.88 an hour, which is 7% below the national $26.65. The middle half of them earn between $22.93 and $29.40 an hour. BLS counts 3,340 of them working in the state, 11.6 for every 10,000 jobs (US: 8.7), so the local bench is deeper than average.
A crew paid at the 75th percentile for carpenters ($35.78 an hour) would add about $3,650 to the statewide midpoint; one at the 25th percentile ($24.97) would take off about $3,450. Use that as a rough guide to how far a bid can sit from our midpoint on wages alone.
BLS counts 2,873,900 jobs across Colorado (May 2025), which is 1.8% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $24.97 | $30.21 | $35.78 | $29.12 | 1.04 | state |
| Cement masons and concrete finishers (47-2051) | 10% | $23.59 | $29.18 | $31.70 | $27.41 | 1.06 | state |
| Electricians (47-2111) | 10% | $23.50 | $29.92 | $37.73 | $30.38 | 0.98 | state |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $25.18 | $30.40 | $37.86 | $30.67 | 0.99 | state |
| Drywall and ceiling tile installers (47-2081) | 10% | $23.43 | $29.70 | $33.77 | $28.33 | 1.05 | state |
| Roofers (47-2181) | 10% | $22.93 | $24.88 | $29.40 | $26.65 | 0.93 | state |
| Blended | 100% | 1.02 | |||||
Weather windows across Colorado
Season matters for home addition. For each Colorado metro below we took NOAA's 1991-2020 monthly normals from the nearest suitable station and counted comfortable months for digging and ground work.
Colorado Springs has the longest comfortable season of the metros we cover in Colorado at 7 months (April through October); Pueblo has the shortest at 5 (April through June and September through October). Rainfall runs from 9 inches a year in Grand Junction to 21 inches in Boulder.
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 |
|---|---|---|---|---|
| Denver | 18 | 90 | 15 | 6: April through June and August through October |
| Colorado Springs | 19 | 87 | 16 | 7: April through October |
| Boulder | 22 | 88 | 21 | 7: April through October |
| Fort Collins | 18 | 87 | 16 | 7: April through October |
| Greeley | 18 | 92 | 15 | 6: April through June and August through October |
| Grand Junction | 17 | 95 | 9 | 5: April through June and September through October |
| Pueblo | 15 | 93 | 12 | 5: April through June and September through October |
Quality levels and sizes in Colorado
The cited range is cut into three overlapping bands (basic, standard and premium) and scaled to statewide Colorado wages and prices. The grid prices the same bands at 3 common sizes.
Basic
$38,400 to $54,200
Bump-out or simple room without plumbing
Standard
$50,200 to $66,000
Standard room addition with HVAC and electrical
Premium
$62,100 to $77,800
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $13,100 – $18,800 | $17,400 – $23,100 | $21,600 – $27,300 |
| 20x20 room (400 sq ft) | $51,000 – $71,800 | $66,600 – $87,500 | $82,300 – $103,000 |
| large suite (600 sq ft) | $76,300 – $107,000 | $99,500 – $130,500 | $122,500 – $153,500 |
Colorado versus the states around it
Colorado ranks 19 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. Colorado sits at $58,100. The five states closest by workforce center are listed below.
| State | Distance | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Wyoming | 120 miles away | $36,100 – $73,000 | $54,600 | −6% |
| New Mexico | 340 miles away | $36,000 – $72,900 | $54,500 | −6% |
| Utah | 410 miles away | $35,000 – $71,100 | $53,000 | −9% |
| South Dakota | 440 miles away | $33,000 – $66,900 | $49,900 | −14% |
| Kansas | 450 miles away | $35,200 – $71,300 | $53,300 | −8% |
Home addition cost by metro in Colorado
1 of the 7 metros sit above the statewide midpoint of $58,100, and the top-to-bottom gap is 10%. 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 |
|---|---|---|---|
| Denver, CO | $39,500 – $80,100 | $59,800 | +3% |
| Boulder, CO | $37,800 – $76,600 | $57,200 | −2% |
| Fort Collins, CO | $36,700 – $74,500 | $55,600 | −4% |
| Greeley, CO | $36,700 – $74,300 | $55,500 | −5% |
| Grand Junction, CO | $36,500 – $74,000 | $55,300 | −5% |
| Colorado Springs, CO | $36,400 – $73,700 | $55,100 | −5% |
| Pueblo, CO | $36,100 – $73,200 | $54,600 | −6% |
Home addition: what moves the price in Colorado
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.
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Home addition in Colorado: your questions
+How much does it cost to build a home addition in Colorado?
$38,400 to $77,800 for 300 sq ft, using statewide wages and prices. Metro areas inside Colorado can sit above or below that.
+Which city in Colorado is cheapest for home addition?
Pueblo at about $54,600 (midpoint, 300 sq ft). The priciest is Denver at $59,800.
+Is home addition cheaper in Colorado than the US average?
It is 1% more expensive: $58,100 against $57,500 for 300 sq ft at the midpoint.
+What share of the price is labor in Colorado?
About 67% ($39,100). Materials are 31%. Statewide labor for this job is weighted 1.02x the national wage level.
+What do carpenters earn in Colorado?
The BLS statewide median is $30.21 an hour, against $29.12 for the US. The 25th to 75th percentile range is $24.97 to $35.78.
+Where does Colorado rank for home addition costs?
19th most expensive of 51 (the 50 states plus DC) at the midpoint, $58,100 for 300 sq ft. Rank 1 is the costliest.
+What do basic and premium home addition work cost in Colorado?
For 300 sq ft, basic work runs $38,400 to $54,200 and premium work $62,100 to $77,800. 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 Colorado?
Yes where winters or summers are hard. Of the Colorado metros we cover, Colorado Springs 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 Colorado
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.