Accessory Dwelling Unit (ADU) Construction in Beaverton, OR — Costs $74,170 to $432,658
What does accessory dwelling unit (adu) construction cost in Beaverton? Average $185,425, ranging $74,170–$432,658. Labor runs $42.37/hr locally — 24% above the national average. Free breakdown with material + labor split.
Beaverton, OR Market
+24% vs nationalLabor Rate
$42.37/hr
Material Index
106
Avg Permit Cost
$1,525
Median Home Price
$425,000
In a smaller market like Beaverton, Oregon, the pool of contractors specializing in accessory dwelling unit (adu) construction may be more limited. Getting 3+ quotes is especially important to ensure fair pricing. At 24% above the national average, Beaverton is one of the more expensive markets for home improvement — driven primarily by above-average labor rates in the region. The median home in Beaverton is valued at $425,000, putting this project at about 43.6% of home value — a moderate investment with a projected 80% ROI.
Low Estimate
$74,170
National: $60,000
Mid-Range
$185,425
National: $150,000
High End
$432,658
National: $350,000
Per Sq Ft
$309
National: $250
Accessory Dwelling Unit (ADU) Construction Cost Calculator for Beaverton
Adjusted for Beaverton's labor rate ($42.37/hr) and material costs (index 106).
Mid-grade materials, good quality fixtures, standard options.
Estimated Total in Beaverton
$185,425
Based on 200 sq ft at mid quality, adjusted for Beaverton market rates.
Local Cost Breakdown
At Beaverton's average rate of $42.37/hr (41% above national avg)
Material cost index 106 (6% above national baseline of 100)
Accessory Dwelling Unit (ADU) Construction vs. Home Value in Beaverton
| Metric | Beaverton | National Avg |
|---|---|---|
| Accessory Dwelling Unit (ADU) Construction (Mid-Range) | $185,425 | $150,000 |
| Median Home Price | $425,000 | $350,000 |
| Project as % of Home Value | 43.6% | 42.9% |
| Estimated ROI | 80% | 80% |
| Median Household Income | $60,600 | $75,000 |
What Affects the Price in Beaverton
- 1Local labor rates ($42.37/hr in Beaverton)
- 2Material cost index (106 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 Beaverton, OR
Second Story Addition
$247,233
Room Addition
$111,255
Swimming Pool Installation
$78,061
Garage Addition
$67,989
Home Addition
$97,484
Inground Swimming Pool
$76,916
Attic Conversion
$68,958
Swimming Pool Construction
$62,689
Accessory Dwelling Unit (ADU) Construction in Other Oregon Cities
Planning a Accessory Dwelling Unit (ADU) Construction in Beaverton
Building permits are typically required for a accessory dwelling unit (adu) construction in Beaverton. The average permit fee in this area is $1,525, 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 Beaverton, skilled contractors charge an average of $42.37/hr, and the specialized nature of this work means cutting corners on labor can lead to costly rework.
For the median Beaverton household earning $60,600/year, this project at $185,425 represents a significant investment. Consider financing options or phasing the work to spread costs over time.
Accessory Dwelling Unit (ADU) Construction — National Guide
See the full national cost guide with DIY tips, cost factors, and ROI analysis.
All Construction Costs in Beaverton
View labor rates, material costs, and project estimates for Beaverton, OR.
Explore All Project Cost Guides
Compare costs across 120+ home improvement projects in 3,636 cities nationwide.
View All Project Costs