Oregon / Local ADU planning
Your ADU,
in Portland.
Conversion and detached ADU guidance, with local design and construction firms.
The local starting point
Compare the size cap against your main home, then check site constraints, parking and any development-charge waiver conditions.
Start with the right permit office
Find your local guide.
Portland city guide and Portland provider research. Nearby cities and unincorporated counties have their own permitting processes.
Make a useful shortlist
Explore ADU providers.
Company websites and public permits provide different kinds of evidence. Listings are research starting points; confirm service area, credentials and availability directly.
Get ready for the first conversation
A clearer scope.
A more useful quote.
Build a budget with your own local estimates, then compare providers on design, site work, utilities and permit responsibilities.
Build your budget ↗Before you hire
Use the quote comparison checklist ↗Oregon CCB contractor search ↗Check the relevant professional board for architects and other separately licensed services.