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ADU Registration in the Portland Metro Area: A Compliance Checklist

April 10, 2026

Accessory dwelling units bring extra income potential, but each jurisdiction in the tri-county area has its own registration and permitting expectations before a unit can legally be rented.

What to keep on file

Certificate of occupancy, current permit records, and utility separation documentation are the three items most owners are missing when a dispute arises.

How PMNW Group Protects You: We confirm ADU permitting status before marketing a unit and keep documentation organized in your owner portal.

Let us handle compliance so you don't have to.

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