Check zoning, ADU eligibility, flood zones, and buildability for any Oregon address. 142 factors. 20+ government sources. Results in 20 seconds.
Oregon is a pioneer in American zoning reform. In 2019, the state became the first to effectively end single-family-only zoning through HB 2001, which requires cities to allow duplexes, triplexes, and fourplexes on residential lots. Portland has gone further with its Residential Infill Project, allowing up to four units on most lots in the city.
Oregon's land use planning system — anchored by mandatory urban growth boundaries — creates a clear distinction between buildable urban land and protected rural land. This makes zoning analysis especially high-stakes in Oregon: a property inside a UGB may allow multi-family development, while a similar property just outside may be restricted to farm use.
For property owners and investors, Oregon offers strong development potential in urban areas with some of the most progressive housing policies in the nation. ADUs are allowed statewide with no owner-occupancy or parking requirements — making Oregon one of the best states for ADU investment.
ADU Status
ADUs Allowed Statewide
Permit Timeline
3-16 weeks
Common Zones
R5, R7, R10
Top Theme
First state to end single-family zoning
Jurisdictions
242
Median Home
$490K
Oregon was the first state to effectively end single-family-only zoning (HB 2001, 2019). ADUs are allowed statewide on all residential lots in cities with populations over 2,500.
Zoning rules vary by city. Select a city or enter any address to check your specific property.
Portland has adopted Residential Infill Project (RIP) zoning that allows up to 4 units on most residential lots. The city is a national leader in middle housing, ADU construction, and form-based zoning reform.
Check Portland PropertiesSalem has a comprehensive zoning code aligned with its growth management plan. The city has adopted middle housing allowances under HB 2001 and allows ADUs on residential lots.
Check Salem PropertiesEugene has progressive land use policies with emphasis on sustainability and infill development. The city has adopted middle housing zoning changes and expanded ADU allowances.
Check Eugene PropertiesBend is one of the fastest-growing cities in Oregon with high housing costs. The city has expanded its urban growth boundary and adopted ADU/middle housing allowances to address affordability.
Check Bend Properties142 factors. 20+ government sources. One Buildability Score. Free first report.
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