Accessory Dwelling Unit (ADU) Construction in Eugene, OR — Costs $67,290 to $392,525
What does accessory dwelling unit (adu) construction cost in Eugene? Average $168,225, ranging $67,290–$392,525. Labor runs $34.59/hr locally — 12% above the national average. Free breakdown with material + labor split.
Eugene, OR Market
+12% vs nationalLabor Rate
$34.59/hr
Material Index
109
Avg Permit Cost
$1,314
Median Home Price
$477,650
Eugene is a mid-sized city in Oregon 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 Eugene 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 Eugene is valued at $477,650, putting this project at about 35.2% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$67,290
National: $60,000
Mid-Range
$168,225
National: $150,000
High End
$392,525
National: $350,000
Per Sq Ft
$280
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Eugene
Adjusted for Eugene's labor rate ($34.59/hr) and material costs (index 109).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Eugene
$168,225
Based on 200 sq ft at mid quality, adjusted for Eugene market rates.
Local Cost Breakdown
At Eugene's average rate of $34.59/hr (15% above national avg)
Material cost index 109 (9% above national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Eugene
| Metric | Eugene | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $168,225 | $150,000 |
| Median Home Price | $477,650 | $350,000 |
| Project as % of Home Value | 35.2% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $85,841 | $75,000 |
What Affects the Price in Eugene
- 1Local labor rates ($34.59/hr in Eugene)
- 2Material cost index (109 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 Eugene, OR
Second Story Addition
$224,300
Room Addition
$100,935
Swimming Pool Installation
$72,488
Garage Addition
$61,683
Home Addition
$89,468
Inground Swimming Pool
$72,283
Attic Conversion
$61,856
Swimming Pool Construction
$56,233
Accessory Dwelling Unit (ADU) Construction in Other Oregon Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Eugene
Building permits are typically required for a accessory dwelling unit (adu) construction in Eugene. The average permit fee in this area is $1,314, 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 Eugene, skilled contractors charge an average of $34.59/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
With a median household income of $85,841, many Eugene residents can budget for this project through savings. The mid-range cost of $168,225 represents 196% 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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