OR · State directory

Oregon ADU rules

Official accessory dwelling unit regulations for 25 jurisdictions in Oregon, plus statewide law.

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We have read the ordinances for 25 Oregon cities and lined them up side by side: detached vs internal, size limits, owner occupancy, and approval process.

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Statewide ADU law

Oregon has state-level ADU legislation that applies across local jurisdictions. Local rules below may add requirements on top of state law.

Cities

Counties & regions

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