Accessory Dwelling Unit (ADU) Construction in Fort Collins, CO — Costs $61,310 to $357,642
What does accessory dwelling unit (adu) construction cost in Fort Collins? Average $153,275, ranging $61,310–$357,642. Labor runs $31.01/hr locally — 2% above the national average. Free breakdown with material + labor split.
Fort Collins, CO Market
+2% vs nationalLabor Rate
$31.01/hr
Material Index
101
Avg Permit Cost
$1,411
Median Home Price
$498,357
Fort Collins is a mid-sized city in Colorado with a healthy pool of local contractors. Homeowners generally have several options to compare for a accessory dwelling unit (adu) construction, which helps keep pricing competitive. Costs in Fort Collins run slightly above the national average, though the gap is modest enough that smart material choices and timing can close it. The median home in Fort Collins is valued at $498,357, putting this project at about 30.8% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$61,310
National: $60,000
Mid-Range
$153,275
National: $150,000
High End
$357,642
National: $350,000
Per Sq Ft
$255
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Fort Collins
Adjusted for Fort Collins's labor rate ($31.01/hr) and material costs (index 101).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Fort Collins
$153,275
Based on 200 sq ft at mid quality, adjusted for Fort Collins market rates.
Local Cost Breakdown
At Fort Collins's average rate of $31.01/hr (3% above national avg)
Material cost index 101 (1% above national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Fort Collins
| Metric | Fort Collins | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $153,275 | $150,000 |
| Median Home Price | $498,357 | $350,000 |
| Project as % of Home Value | 30.8% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $88,521 | $75,000 |
What Affects the Price in Fort Collins
- 1Local labor rates ($31.01/hr in Fort Collins)
- 2Material cost index (101 vs national 100)
- 3Attached vs detached
- 4Size and bedroom count
- 5Kitchen and bath quality
- 6Local ADU regulations
Popular Upgrades
- Full kitchen
- Separate entrance
- Solar panels for energy independence
Other Projects in Fort Collins, CO
Second Story Addition
$204,367
Room Addition
$91,965
Swimming Pool Installation
$66,265
Garage Addition
$56,201
Home Addition
$81,652
Inground Swimming Pool
$66,188
Attic Conversion
$56,266
Swimming Pool Construction
$51,151
Accessory Dwelling Unit (ADU) Construction in Other Colorado Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Fort Collins
Building permits are typically required for a accessory dwelling unit (adu) construction in Fort Collins. The average permit fee in this area is $1,411, though costs vary based on project scope. Permit fees in this market are above average — factor them into your total budget. Plan for 6-18 months from start to finish.
A accessory dwelling unit (adu) construction is a complex project best left to licensed professionals. In Fort Collins, skilled contractors charge an average of $31.01/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
With a median household income of $88,521, many Fort Collins residents can budget for this project through savings. The mid-range cost of $153,275 represents 173% of the typical household's annual income.
Accessory Dwelling Unit (ADU) Construction — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
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