Accessory Dwelling Units (ADUs) are small, self-contained homes built on the same lot as an existing house. They are becoming more common in Corvallis. But still have a long way to go to gain traction.
Homeowners should consider adding them to address housing shortages, create rental income, or provide space for family members. Local zoning updates have made the process easier.
Why ADUs are growing in Corvallis
- The city needs more housing options, especially affordable ones.
- Families want to keep relatives close while giving them independence.
- Rising home prices are pushing buyers to look for income-producing options.
What’s allowed
Corvallis rules allow ADUs on almost every residentially zoned lot. They must meet size limits and design standards. They can be attached to the main home, converted from a garage, carved out from existing space (think converting your downstairs to a unit with it’s own kitchen) or built as a separate structure.
Benefits for homeowners
- Rental income to offset mortgage costs.
- Increased property value.
- Flexible space that adapts to changing needs.
- Housing for aging parents or adult children.
Challenges to plan for
- Construction costs. A new ADU in Corvallis averages $175,000 to $250,000 depending on size and finishes.
- Permits and inspections. You must work with the city to ensure compliance.
- Managing tenants- if rented out.
Examples in the city
In South Corvallis, homeowners are adding detached ADUs for long-term rentals. In the College Hill area, garage conversions are popular with families who rent to OSU students.
Future outlook
Expect more ADUs in neighborhoods with larger lots and in areas close to transit. Builders and architects are offering pre-designed plans that meet city rules. This shortens the approval process and reduces design costs.
If you are considering an ADU in Corvallis
- Check with the city planning department – they can offer guidance on code interpretation and rules. Then request a “pre-app” meeting as you get more serious.
- Set a budget that covers construction, permits, and utility connections.
- Look into set floor plan options through companies like Hi-Line, Adair and Simplicity by Hayden Homes. Or find free plans available through other cities pre-approved plans webpages or ThatADUGuy.com (see also below)
- Subscribe to ThatADUGuy’s YouTube or Instagram
- Talk to a lender about financing options like home equity loans or cash-out refinancing. There are even options through companies like Renofi.com that allow for home equity loans above your current property value based on the final value with the ADU or renovations.
- Chat with Ryan on our team, who is a certified ADU Specialist.
ADUs are not only a housing solution. They are a way for homeowners to adapt to Corvallis’ changing market and make better use of their property.