Accessory Structures in Weber County, UT (2026)
4 rules for unincorporated Weber County, Utah.
Verified from official government sources
ADU Rules
Weber County allows one accessory dwelling unit per single-family lot where the zone permits it, with a footprint between 400 and 1,500 square feet, gross floor area capped at 2,000 square feet, and a 35-foot height limit for detached units. Either the primary home or the ADU must be owner-occupied, and neither can be used as a short-term rental.
Weber County Accessory Dwelling Unit Rules
Some RestrictionsWeber County Land Use Code § 108-19-3, § 108-19-4 (Accessory Dwelling Units)
No more than one accessory dwelling unit shall be allowed on a lot containing a single-family dwelling, unless explicitly specified otherwise in this Land Use Code. ... the footprint of an accessory dwelling unit, as determined by the exterior perimeter of all levels when viewed from above, shall not be less than 400 square feet and shall not exceed 1,500 square feet. In no case shall the gross...
ADU Owner Occupancy
Weber County requires that either the accessory dwelling unit or the primary single-family home stay owner-occupied at all times. An owner who leaves cannot rent out the unit they normally live in, and the non-owner-occupied side is capped at one family.
Weber County ADU Owner-Occupancy Rule
Some RestrictionsWeber County Land Use Code § 108-19-3
Occupancy. Either the accessory dwelling unit or the primary dwelling shall be owner-occupied. While away, the owner shall not offer the owner-occupied dwelling unit for rent. The non-owner-occupied unit is limited to no more than one family.
ADU Rental Restrictions
Neither the primary single-family home nor its accessory dwelling unit may be used or licensed as a short-term, or 'nightly,' rental in unincorporated Weber County, unless another part of the Land Use Code specifically allows it.
Weber County Bans ADU Short-Term Rentals
Heavy RestrictionsWeber County Land Use Code § 108-19-3
Short-term rentals not allowed. Neither the single-family dwelling unit, nor the accessory dwelling unit, shall be used or licensed as a short-term rental, otherwise known as "nightly rental" elsewhere in this Land Use Code, unless specifically allowed elsewhere in this Land Use Code.
Shed & Carport Rules
Weber County Land Use Code § 108-7-16 sets setback and height standards for any accessory building of 1,000 square feet or larger: six to ten feet off the rear property line depending on zone, a ten-foot interior side setback (40 feet on a corner lot facing a street), and a 25-foot height cap that can rise to 35 feet with extra street and dwelling separation.
Weber County Large Accessory Building Standards
Some RestrictionsWeber County Land Use Code § 108-7-16
Accessory buildings 1,000 square feet or larger in area that accommodate uses meeting zoning requirements shall: Be located at least six feet from the rear of a dwelling in the residential estates zones and at least ten feet from the rear of a dwelling in the agricultural and forest zones. Have a side setback of at least ten feet on an interior lot and 40 feet on a corner lot where the side pro...
All Weber County ordinances
See every category we cover for Weber County: parking, noise, fences, fires, animals, pools, and more.
Weber County Ordinance Hub →