ADUs Decisions in Phoenix

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 Phoenix, AZ public meetings.

ZoneWire monitors Phoenix, AZ planning and council meetings, transcribes them, and flags adus activity. As of the latest update we have analyzed 2 meetings and detected 7 adus mentions.

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

Zoning in the City of Phoenix is administered by the Planning and Development Department (Zoning Division, 200 W. Washington Street, 2nd Floor). A rezoning application is first reviewed by the Village Planning Committee for the area, which makes a recommendation to the Planning Commission. The Planning Commission holds a public hearing (about three to five weeks after the Village Planning Committee meeting) and may approve, approve with stipulations, deny, approve differently than requested, or continue the case. The case then goes to the City Council for final action. Per the city, the process generally takes about three and a half to six months from application to final Council action.

The Phoenix Board of Adjustment is a seven-member board appointed by the City Council to four-year terms, serving without pay. It grants or denies variances, decides the issuance of use permits, and hears matters referred by the Zoning Administrator, including appeals of Hearing Officer decisions. On appeal the Board may reverse, affirm (wholly or partly), or modify the decision. Board of Adjustment meetings are usually held on the first Thursday of the month.

Variances and use permits are heard at a public hearing before the Zoning Administrator or a Hearing Officer, held within 60 days of the filing date. Notice is advertised in the Record Reporter at least 15 days before the hearing, and the property is posted 15 days in advance. To grant a variance, the Zoning Administrator or Hearing Officer must find that four required conditions exist on the subject property. Decisions can be appealed to the Board of Adjustment.

The Phoenix General Plan is the city's long-range guide addressing land use, housing, neighborhoods, transportation, natural resources, public facilities, and more, and it guides zoning and development decisions. Arizona state statute requires the plan to be updated or readopted every ten years by public vote. The updated General Plan 2025 was adopted by the City Council on April 3, 2024, and approved by Phoenix voters in November 2024, with nearly 80% voting in support.

Phoenix's residential zoning districts (including RE-35, R1-18, R1-10, R1-8, R1-6, R-2, R-3, R-3A, R-4, R-4A, and R-5) are set out in Sections 609 through 619 of the Zoning Ordinance, and each district has its own development standards. Common single-family districts include R1-6 and R1-10. Following 2024 zoning ordinance amendments made to comply with Arizona HB 2720, a lot with no more than one single-family detached primary dwelling may have two accessory dwelling units in addition to the primary home, with a third ADU permitted only under certain conditions (such as one ADU qualifying as affordable housing on a lot of at least 43,560 square feet).

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