Home addition cost in Fort Collins, CO
Local estimate from BLS wage data and BEA price levels. Reviewed Nov 4, 2026.
- Typical range (300 sq ft)
- $36,700 – $74,500
- Per sq ft
- $121 – $241
- before permit
- Versus US midpoint
- −3%
- US $57,500
- Rank of 300 metros
- #136
- 1 = most expensive
If you want to build a home addition in Fort Collins, plan on $36,700 to $74,500 for 300 sq ft, all in. Per sq ft, that is $121 to $241 for materials and labor, with the permit on top. The local midpoint runs 3% lower than the national one. Carpenters earn a median of $28.04 an hour in the Fort Collins area, 4% below the US median of $29.12.
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Estimated cost for 300 sq ft in Fort Collins, CO, standard level
$48,000 to $63,100
About $157 to $205 per sq ft before permits. Labor is about 67% of the bill.
| Part | Low | High |
|---|---|---|
| Materials | $15,000 | $19,600 |
| Labor | $32,100 | $42,000 |
| Permits and fees | $960 | $1,550 |
| Total | $48,000 | $63,100 |
Cost breakdown for 300 sq ft in Fort Collins, CO
| Part of the job | Low | Midpoint | High | Share |
|---|---|---|---|---|
| Materials | $11,500 | $17,300 | $23,100 | 31% |
| Labor | $24,700 | $37,000 | $49,400 | 67% |
| Permits and fees | $510 | $1,250 | $2,000 | 2% |
| Total | $36,700 | $55,600 | $74,500 | 100% |
Why Fort Collins prices look the way they do
The wage side of the estimate leans on carpenters, who do 50% of the hours on a typical job. Their local median is $28.04 an hour. Add the other trades involved and the blended wage index for Fort Collins is 0.97 (US = 1.00), which puts labor at 67% of the total.
On the materials line, the BEA goods price index for the Fort Collins metro is 96.1 (US = 100). The midpoint materials bill for 300 sq ft comes to $17,300, compared with $18,000 at national prices. Permit and inspection fees are scaled by the broader index (101.1) and land at $510 to $2,000.
Fort Collins: what basic, standard and premium work costs
Three bands are cut from the same cited range and localized for Fort Collins 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
$36,700 to $51,800
Bump-out or simple room without plumbing
Standard
$48,000 to $63,100
Standard room addition with HVAC and electrical
Premium
$59,400 to $74,500
Large addition with bath or kitchen and a new foundation
| Size | Basic | Standard | Premium |
|---|---|---|---|
| bump-out (100 sq ft) | $12,600 – $18,000 | $16,700 – $22,100 | $20,700 – $26,200 |
| 20x20 room (400 sq ft) | $48,800 – $68,700 | $63,700 – $83,700 | $78,700 – $98,600 |
| large suite (600 sq ft) | $72,900 – $102,500 | $95,100 – $124,500 | $117,500 – $147,000 |
Fort Collins 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 Fort Collins is 0.97 times the national level.
For carpenters (47-2031, weighted 50%) the local median is $28.04 an hour, which is 4% below the national $29.12. The middle half of them earn between $23.36 and $30.74 an hour. BLS counts 510 of them working in the area, 30.1 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 $28.31 an hour, which is 3% above the national $27.41. The middle half of them earn between $23.15 and $30.36 an hour. BLS counts 320 of them working in the area, 18.9 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 $29.52 an hour, in line with the US median of $30.38. The middle half of them earn between $23.52 and $36.33 an hour. About 830 work in the metro. That is 49.0 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 $29.14 an hour, which is 5% below the national $30.67. The middle half of them earn between $23.26 and $36.75 an hour. BLS counts 800 of them working in the area, 47.2 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 $29.39 an hour, 4% above the US median of $28.33. The middle half of them earn between $22.05 and $31.45 an hour. About 120 work in the metro. That is 7.1 per 10,000 jobs, compared with 5.3 nationally, which suggests plenty of local crews to bid.
For roofers (47-2181, weighted 10%) the local median is $23.37 an hour, which is 12% below the national $26.65. The middle half of them earn between $22.32 and $28.83 an hour. BLS counts 150 of them working in the area, 8.9 for every 10,000 jobs (US: 8.7), so the local bench is about average.
Quotes come from real crews, not medians. If the carpenters on your job are paid at the 75th percentile ($30.74 an hour) instead of the median, the labor line grows by about $1,750. At the 25th percentile ($23.36) it shrinks by about $3,050. The total moves by 3.2% or 5.5%, so wages alone rarely explain a quote that is far outside our range.
For context on the local economy, BLS counts 169,430 jobs in the Fort Collins-Loveland area. That makes it the 138th largest of the 300 metros we cover, with 0.11% of US employment.
| Trade | Weight | 25th pct | Median | 75th pct | US median | Ratio | Level used |
|---|---|---|---|---|---|---|---|
| Carpenters (47-2031) | 50% | $23.36 | $28.04 | $30.74 | $29.12 | 0.96 | metro |
| Cement masons and concrete finishers (47-2051) | 10% | $23.15 | $28.31 | $30.36 | $27.41 | 1.03 | metro |
| Electricians (47-2111) | 10% | $23.52 | $29.52 | $36.33 | $30.38 | 0.97 | metro |
| Plumbers, pipefitters and steamfitters (47-2152) | 10% | $23.26 | $29.14 | $36.75 | $30.67 | 0.95 | metro |
| Drywall and ceiling tile installers (47-2081) | 10% | $22.05 | $29.39 | $31.45 | $28.33 | 1.04 | metro |
| Roofers (47-2181) | 10% | $22.32 | $23.37 | $28.83 | $26.65 | 0.88 | metro |
| Blended | 100% | 0.97 | |||||
Related projects, priced for Fort Collins
Because every project leans on different trades, Fort Collins's wage level does not move all prices equally. Against the US midpoint, bathroom remodel runs −2% and roof replacement −8%.
| Project | Size | Range | vs. US |
|---|---|---|---|
| Kitchen remodel | 120 sq ft | $17,900 – $30,400 | −3% |
| Bathroom remodel | 45 sq ft | $4,600 – $22,800 | −2% |
| Detached garage | 576 sq ft | $28,000 – $56,200 | −3% |
| Roof replacement | 2,000 sq ft of roof | $5,600 – $11,600 | −8% |
Climate in Fort Collins: timing your home addition job
We use NOAA's 1991-2020 climate normals for Ft Collins (5 miles from the city center). These are 30-year monthly averages, not forecasts.
April through October is the stretch where digging, grading and setting material in the ground runs into the fewest weather problems in Fort Collins (7 of 12 months). January, February, March, November and December have an average overnight low at or below freezing (32°F).
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 150 days a year with a low at or below 32°F at this station.
Fort Collins gets about 16 inches of precipitation in a normal year, including roughly 51 inches of snow. The wettest months are April, May and June (2.7 inches in May). Inside the workable window, September and October are the driest, at 1.4 and 1.3 inches. The station averages about 29 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 | 45 | 18 | 0.4 | Cold |
| Feb | 47 | 21 | 0.5 | Cold |
| Mar | 56 | 29 | 1.3 | Cold |
| Apr | 63 | 35 | 2.1 | Workable |
| May | 71 | 44 | 2.7 | Workable |
| Jun | 82 | 53 | 1.9 | Workable |
| Jul | 87 | 59 | 1.6 | Workable |
| Aug | 85 | 57 | 1.4 | Workable |
| Sep | 77 | 48 | 1.4 | Workable |
| Oct | 64 | 36 | 1.3 | Workable |
| Nov | 53 | 26 | 0.7 | Cold |
| Dec | 44 | 18 | 0.5 | Cold |
Specs and site conditions that change a Fort Collins bid
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).
How Fort Collins compares
Same job, same size (300 sq ft), priced for the nearest metros. Denver is the priciest of the group at $59,800. Cheyenne is the cheapest at $54,400.
| Area | Range | Midpoint | vs. here |
|---|---|---|---|
| Fort Collins, COthis page | $36,700 – $74,500 | $55,600 | |
| Boulder, CO40 miles | $37,800 – $76,600 | $57,200 | +3% |
| Greeley, CO60 miles | $36,700 – $74,300 | $55,500 | level |
| Cheyenne, WY60 miles | $35,900 – $72,800 | $54,400 | −2% |
| Denver, CO90 miles | $39,500 – $80,100 | $59,800 | +8% |
| Colorado Springs, CO135 miles | $36,400 – $73,700 | $55,100 | −1% |
| Colorado (statewide) | $38,400 – $77,800 | $58,100 | +5% |
| United States | $38,000 – $77,000 | $57,500 | +3% |
Across 300 US metros, Fort Collins comes in at #136 from the top. The priciest is Honolulu, HI at $79,600; the cheapest is Brownsville, TX at $44,300 (midpoints, 300 sq ft). Statewide, Fort Collins is 4% below the Colorado figure.
Other Colorado metros
| 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 | −1% |
| Boulder, CO | 192,390 jobs | $37,800 – $76,600 | $57,200 | +3% |
| Greeley, CO | 119,540 jobs | $36,700 – $74,300 | $55,500 | level |
| Grand Junction, CO | 67,170 jobs | $36,500 – $74,000 | $55,300 | −1% |
| Pueblo, CO | 61,780 jobs | $36,100 – $73,200 | $54,600 | −2% |
Cities with a workforce like Fort Collins's
Big cities and small ones price differently, so here is Fort Collins against the 4 metros with the closest total employment.
| Metro | Size | Range | Midpoint | vs. here |
|---|---|---|---|---|
| Port St. Lucie, FL | 170,820 jobs | $33,100 – $67,300 | $50,200 | −10% |
| Atlantic City, NJ | 168,700 jobs | $40,200 – $81,400 | $60,800 | +9% |
| Visalia, CA | 171,140 jobs | $39,000 – $79,000 | $59,000 | +6% |
| Lubbock, TX | 166,780 jobs | $30,600 – $62,100 | $46,400 | −17% |
Get 3 local quotes
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Home addition in Fort Collins: your questions
+How much does it cost to build a home addition in Fort Collins?
For 300 sq ft, expect $36,700 to $74,500 in the Fort Collins area. A standard-spec job lands at $48,000 to $63,100. Small jobs usually cost more per sq ft and large ones less.
+What is the price per sq ft for home addition in Fort Collins?
About $121 to $241 per sq ft for materials and labor, plus $510 to $2,000 for the permit if one is needed. The US range is $125 to $250.
+Is home addition cheaper in Fort Collins or Boulder?
Boulder is 40 miles away. The midpoint for 300 sq ft there is $57,200, which is 3% more than Fort Collins ($55,600). Wage and materials indexes both feed that gap.
+How much of the bill is labor in Fort Collins?
About 67% at the midpoint, or $37,000 out of $55,600. Materials are 31% and permits 2%. Nationally, labor is 67%.
+What would 20x20 room (400 sq ft) cost in Fort Collins?
$48,800 to $98,600. Pick a different size in the estimator above to get your own number.
+Does home addition need a permit in Fort Collins?
Often, but rules are set by your city or county building office, so call before you hire. Budget $510 to $2,000 for fees in the Fort Collins area (our national range of $500 to $2,000 scaled by the local price level).
+Is Fort Collins expensive for home addition compared with the rest of Colorado?
Fort Collins is 4% 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 Fort Collins?
The BLS median is $28.04 an hour in the Fort Collins area, compared with $29.12 nationally. The 25th to 75th percentile range is $23.36 to $30.74.
+What do basic and premium home addition work cost in Fort Collins?
For 300 sq ft, basic work runs $36,700 to $51,800 and premium work $59,400 to $74,500. 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 Fort Collins?
Based on NOAA 1991-2020 normals, the comfortable months for this kind of work are April through October. September and October 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 Fort Collins
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.