ADU Builders in Oregon
Oregon was an early ADU pioneer; Portland alone has permitted thousands.
Permit timeline
60 days
Max size
800 sqft
Owner-occupancy
Not required
Rentals
Allowed
Cities in Oregon
Oregon ADU Law Summary
Oregon HB 2001 requires cities of 25,000+ to allow ADUs on single-family lots. Portland has been a national leader in ADU production.