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Commission approves zoning amendment to allow accessory residences to comply with new state law
Summary
Planning and Zoning Commission approved amendments to Mohave County's zoning ordinance to implement changes required by House Bill 2928, expanding where and how accessory dwelling units (ADUs) may be permitted and raising administrative size limits.
The Mohave County Planning and Zoning Commission approved an amendment to multiple sections of the county zoning ordinance to allow accessory residences (ADUs) on lots where single-family dwellings are permitted, implementing requirements of a recently passed state law.
Melanie (planning staff) told the commission the amendment responds to state law (identified in the hearing as House Bill 2928) and outlined key changes: on lots under one acre, properties may have one detached and one attached accessory residence in addition to the primary residence; on lots of one acre or larger, an additional detached accessory residence may be allowed. The administrative size threshold for accessory residences would increase from 50% of the primary dwelling to 75%; any ADU exceeding 75% would still require a special-use permit from the Board of Supervisors. Setbacks for accessory residences would change from 15 feet to 5 feet, and ADUs remain subject to building and fire codes and lot coverage limits.
Staff noted compliance is required by statute: if the county does not adopt the regulations by Jan. 1, 2026, the law provides that accessory residences would be allowed on zoned residential parcels without county-imposed limits.
A commissioner asked whether the amendment would require rewriting the subdivision manual; staff responded the change affects zoning regulations only and does not alter land-division rules. The commission voted to adopt the zoning amendments as presented by staff.
The amendment will be forwarded to the Board of Supervisors as the commission's recommendation. The transcript does not record any fiscal analysis tied to the ordinance change.
