ADU / Guest House Cost in Oregon
ADU / Guest House in Oregon costs $210–$520 per sq ft in 2026. A typical 500 sq ft project averages $165,000. Oregon is in the West region, where labor and materials run on the higher end of national pricing.
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How much does an adu / guest house cost in Oregon? An adu / guest house in Oregon costs $105,000–$260,000 in 2026, with most homeowners paying around $165,000 for a typical 500 sq ft project.
- Per sq ft
- $210–$520
- Typical range
- $105,000–$260,000
- Average
- $165,000
- Labor share
- 58%
Oregon Average Cost (2026)
Cost Breakdown
Based on a 500 sq ft project in the West region. Actual costs vary by contractor, site conditions, and material choices.
ADU / Guest House Cost by Size in Oregon
Oregon pricing for common adu / guest house project sizes (2026).
| Project size | Low | Mid | High |
|---|---|---|---|
| 250 sq ft | $52,500 | $82,500 | $130,000 |
| 500 sq ft | $105,000 | $165,000 | $260,000 |
| 1,000 sq ft | $210,000 | $330,000 | $520,000 |
Based on $210–$520 per sq ft in the West region.
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Return on Investment
How much value does a adu / guest house add to your home at resale?
How ADU / Guest House compares to other projects
ROI figures based on Remodeling Magazine Cost vs. Value Report 2024, national averages. Actual resale value depends on your market, home price tier, and project quality.
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Materials & Supplies
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Frequently Asked Questions
How much does an adu / guest house cost in Oregon?
In Oregon, a typical 500 sq ft adu / guest house project costs between $105,000 and $260,000, with a mid-range average of $165,000. Oregon is in the West region.
How much is labor for an adu / guest house in Oregon?
Labor accounts for approximately $95,700 of the total cost for a 500 sq ft adu / guest house project in Oregon. The West Coast and Mountain West have some of the highest labor costs in the country, driven by high cost of living and strong contractor demand.
How do I find a contractor for an adu / guest house in Oregon?
Get at least 3 quotes from licensed local contractors, verify their license with Oregon's contractor licensing board, and check reviews on Google or the BBB. Use our free estimate tool to understand fair pricing before you negotiate.
Does an adu / guest house add value to your home in Oregon?
On average, an adu / guest house recoups about 41% of its cost at resale nationwide. For a $165,000 project in Oregon, that's approximately $67,650 in added home value. Actual ROI varies by neighborhood and market conditions.
Other Home Improvement Costs in Oregon
ADU / Guest House Cost in Nearby States
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How big is your ADU / Guest House?
A studio ADU is ~300 sq ft. A 1-bed ADU is ~500 sq ft. A 2-bed ADU is ~700–900 sq ft.
Pro Tips
- Get at least 3 contractor quotes
- Ask about permit requirements
- Budget 10–20% contingency
- Check contractor licenses
Find a ADU / Guest House Pro Near You
Get free quotes from top-rated local pros. No obligation.
Sponsored — BuildCost may earn a referral fee at no extra cost to you. This site connects you with independent service professionals through a third-party matching platform.
Ready to Hire a ADU / Guest House Contractor?
Use your estimate to get competitive bids from licensed local contractors. Getting multiple quotes is the best way to avoid overpaying.
Local contractor matching coming soon.