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608 houses tagged ADU statewide — Multnomah first, then Clackamas and Washington County. Lane and Marion are the next valley pockets.
How To Use This Guide
Coverage
6 Regions
Metro first, then valley, coast, and the rest of the state.
Active ADUs
608
Statewide Oregon listings tagged ADU, counted 2026-08-31.
Multnomah
212
The largest county slice. Portland is the city shortcut.
ADU is a keyword on a house, not a separate property type. Multnomah holds the largest slice. Clackamas and Washington County are the next rings. Eugene and Salem are the valley city cuts. In-law remarks do not match this filter.
212 of 608 Oregon ADU listings sit in Multnomah. Portland is the city shortcut; the county search is wider. Confirm the ADU is permitted and actually on the lot — the keyword means the agent checked the box, not that the county signed off.
Clackamas has 95 ADU listings; Washington County has 62. Those are metro-edge houses with an accessory unit, not a separate ADU property type. Open the county search, then tighten city or map on the results page.
Lane has 48 ADU listings; Marion has 30. Eugene and Salem are the city cuts. In-law and granny-flat remarks do not match this filter — only the ADU keyword does.
Statewide first, then the counties and cities that actually hold ADU inventory.
Every active Oregon listing tagged ADU. 608 counted 2026-08-31.
Search Oregon ADUs212 listings — the largest Oregon slice.
Multnomah ADUs95 listings on the metro edge.
Clackamas ADUs62 listings west of Portland.
Washington County ADUs48 listings — Eugene is the city cut.
Lane ADUs30 listings around Salem.
Marion ADUsCity shortcut inside Multnomah — tighter than the county search.
Portland ADUsLane County city cut.
Eugene ADUsMarion County city cut.
Salem ADUsGet Alerts
Open the search first, then save it to your Client Platform when you want alerts for new Oregon ADUs.
Open a region for county and city context, then come back to the ADU shortcuts above.
Multnomah, Washington, and Clackamas counties. Portland, Beaverton, Lake Oswego, Gresham, and the urban core.
View Portland Metro
Salem, Eugene, Corvallis, and the valley floor. Benton, Lane, Linn, Marion, Polk, and Yamhill counties.
View Willamette Valley
Bend, Redmond, Sisters, Prineville, and Madras. Deschutes, Crook, and Jefferson counties.
View Central Oregon
Medford, Ashland, Grants Pass, and Roseburg. Jackson, Josephine, and Douglas counties.
View Southern Oregon
The Dalles, Pendleton, La Grande, Baker City, and the high desert. Hood River, Wasco, Umatilla, Union, Baker, and more.
View Eastern Oregon
From Astoria to Brookings. Clatsop, Columbia, Lincoln, Tillamook, Coos, and Curry counties.
View Oregon CoastExplore More
Comparing a Multnomah backyard unit to a Lane County accessory dwelling? One broker, statewide Oregon ADU inventory.
