Yavapai County, AZ Accessory Structures: Tiny Homes (2026)

01, in which case the state statute governs. Height is capped at whatever the underlying zoning district allows for the main house. Setbacks: the front yard must match the single-family setback for that district, while the rear, interior side, and exterior side setbacks are a flat five-foot minimum for an attached or detached unit in every zoning district. An ADU cannot sit on top of a public utility easement without the utility's written consent. No new driveway or parking space is required unless the ADU removes an existing required space for the main house, in which case a replacement space must be authorized by the Development Services Director.

Every ADU needs its own address issued by the County Addressing Unit, posted at the driveway entrance and on the structure in four-inch reflective numbers. An ADU may be leased long-term or listed as a vacation/short-term rental, but if the certificate of occupancy was issued on or after September 14, 2024, the owner must live on the property while it is rented short-term, and it may never host nonresidential uses such as a special event requiring a Resolution No. 1752 permit. Construction still has to meet the County's separately adopted building code: the 2024 IRC's Appendix BB (Tiny Houses) is adopted by Ordinance 2025-4, which deletes the appendix's own energy-conservation section, BB106, and substitutes 2012 IECC compliance instead.