ADUs Decisions in Portland

An Accessory Dwelling Unit (ADU) is a secondary housing unit located on the same parcel as a primary single-family residence. ADUs go by many names - granny flats, in-law suites, backyard cottages, garage apartments, or casitas - but they all share the common characteristic of being smaller, subordinate residential units that share a lot with the main house. ZoneWire tracks adus activity across Portland, OR public meetings.

ZoneWire monitors Portland, OR planning and council meetings, transcribes them, and flags adus activity. As of the latest update we have analyzed 5 meetings and detected 11 adus mentions.

Tracking adus in Portland surfaces zoning and development signals early, so developers, investors, and brokers can evaluate parcels and approvals before they reach the broader market.

Zoning in Portland is governed by Title 33, Planning and Zoning, of the Portland City Code. The Land Use Services division administers Title 33, but it does not create or change zoning regulations. Proposed changes to the Zoning Code are developed by the Bureau of Planning and Sustainability through public legislative processes and are then adopted by the Portland City Council. The Zoning Code is intended to implement Portland's Comprehensive Plan and related land use plans.

You can look up a property's zoning through the City's PortlandMaps tool by address or intersection, search by tax numbers, consult the official Zoning Maps by quarter section, or reference the Portland Zoning Code (Title 33) directly. Every property in the City of Portland has a base zone, and some properties also carry overlay zones or fall within plan districts that add regulations.

Every property in Portland has a base zone, such as a residential, commercial, or employment and industrial zone, which sets the primary regulations for the area. Overlay zones consist of additional regulations that address specific subjects in particular areas and modify the base zone rules. Overlay zones appear as lowercase letters after the base zone designation, for example R10(d), where 'd' is the design overlay. Some properties are also within plan districts that carry further regulations.

The Portland Planning Commission is charged with guiding the City's land use planning through stewardship, development, and maintenance of the City's Comprehensive Plan and Zoning Code. It is made up of nine volunteer members who hold public hearings, take public testimony on items marked as hearings, and develop recommendations on land use and urban design regulations that they forward to City Council. Meeting minutes, documents, and videos are generally made available about seven days after each meeting.

The Portland Design Commission provides leadership and expertise on urban design and architecture and advances the purpose of the Design overlay zone. Regularly scheduled Design Commission hearings are held on the 1st and 3rd Thursday of each month. Agendas and meeting details are posted in advance on the City's website.

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