Table of Contents

Accessory Dwelling Units

Oregon requires most localities to permit one interior, attached, or detached accessory dwelling unit (ADU) by right for each existing or newly constructed single-family detached dwelling (§197.312(5)). This requirement applies to all counties with populations greater than 15,000 and all cities with populations greater than 2,500 within an urban growth boundary. Localities may impose "reasonable regulations" governing siting and design.

Planning and Zoning Enabling Laws

These statutes enable planning commissions in Oregon to enact, adopt, and amend comprehensive plans and zoning ordinances. Individual sections address comprehensive planning requirements (§197.173), urban growth planning beyond metropolitan boundaries (§197A.300), and regulations for the southwest corridor light rail project (§197A.500).  

Cities and counties in Oregon are required to adopt comprehensive plans (§197.180).