3 rules for unincorporated Davis County, Utah.
Verified from official government sources
In unincorporated Davis County's R-1 single-family zone, buildings need a 25-foot front yard, 8-foot side yards (each side), and a 25-foot rear yard on a minimum 9,000-square-foot lot. Agricultural zones require larger yards, and each incorporated city sets its own setbacks.
Davis County Code Sec. 15.20.1540 (R-1 Residential Single-Family)
C. Front yard: twenty-five (25) feet. D. Side yards: eight feet (each side.) E. Rear yard: twenty-five (25) feet.
In unincorporated Davis County's R-1 zone, homes may not exceed two stories or 30 feet. The county's general height rule allows up to two-and-a-half stories or 35 feet, while agricultural zones permit barns and farm structures far taller. Cities set their own limits.
Davis County Code Sec. 15.20.1540 (R-1); see also Sec. 15.20.1480
Building height: Two stories not to exceed thirty (30) feet.
Davis County's residential zones control density through minimum lot size and yard setbacks rather than a fixed lot-coverage percentage. R-1 requires a 9,000-square-foot lot with 25-foot front/rear and 8-foot side yards. Utah law also bars cities from restricting internal ADUs by total lot size.
Utah Code Sec. 10-9a-530(2)
In any area zoned primarily for residential use: (a) the use of an internal accessory dwelling unit is a permitted use; (b) ... a municipality may not establish any restrictions or requirements for the construction or use of one internal accessory dwelling unit within a primary dwelling, including ... total lot size.
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