ADU rules in St. George, UT — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
St. George allows accessory dwelling units (ADUs) in certain residential zones under specific conditions per the city's zoning ordinance. ADUs must meet size, setback, and parking requirements.
Accessory dwelling units in St. George are permitted in designated residential zones subject to zoning approval. ADUs must be subordinate to the primary dwelling and are limited in size relative to the main house. Setback and height requirements for ADUs follow the underlying zone standards. At least one additional off-street parking space is typically required. The property owner must reside in either the primary dwelling or the ADU. ADUs may not be used as short-term rentals in zones where STRs are prohibited. A building permit is required for construction.
Unpermitted ADUs face fines, stop-work orders, and potential demolition orders. Operating as an STR without authorization results in additional penalties.
St. George, UT
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See how St. George's adu rules rules stack up against other locations.
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