Weber County, UT Accessory Structures: Shed & Carport Rules (2026)

Section 108-7-16 governs any large accessory building, meaning a detached structure of 1,000 square feet or more, in unincorporated Weber County. The rear setback runs six feet in the Residential Estates zones and ten feet in the Agricultural and Forest zones. Side setbacks are ten feet on an interior lot, jumping to 40 feet on a corner lot where the side line fronts a street. Height is capped at 25 feet, though the county allows a bigger building if it sits farther from neighbors: a builder can shrink the side setback to three feet, forest zones excluded, and push height to 35 feet once the structure sits at least 100 feet from a street-facing property line and at least 40 feet from a dwelling on the neighboring lot.

25 acres with a single-family dwelling provided the building still sits 100 feet from the street line, meets the zone's main-building side setback and stays 40 feet from an adjacent dwelling, and never comes closer to the street than the zone's required front setback for a main building. Any accessory building that tops the dwelling's footprint by more than double requires Design Review approval. Buildings used to keep animals or fowl must also clear the 40-foot dwelling and 100-foot street setbacks of § 108-7-8, and every accessory building still needs the § 108-7-4 rear-yard coverage cap of 25 percent in Residential Estates zones. All of it requires a land use permit before construction begins.