Accessory Structures in Utah (2026)

Utah Code 10-9a-530 requires municipalities to allow internal accessory dwelling units in owner-occupied single-family…

An ADU in unincorporated Salt Lake County needs a building permit before construction, an owner-occupancy affidavit…

Sandy allows only one accessory apartment or extended living area per single-family home, requires an administrative…

West Valley City sets detailed lot, setback, size, parking, and owner-occupancy standards for both detached and…

Utah law makes an internal accessory dwelling unit a permitted use in residential zones. Layton, Bountiful, and other…

Eagle Mountain allows one accessory dwelling unit per residential lot under EMMC 17.70.030, whether attached, over a…

Layton allows one accessory dwelling unit per single-family lot under Section 19.06.300, whether built inside the…

Lehi allows one accessory dwelling unit in an owner-occupied single-family detached home, but only after Planning…

Orem requires the property owner to live in either the main residence or the accessory apartment, and detached…

Provo allows one accessory dwelling unit per single-family detached home in most residential zones under Chapter 14.30…

Salt Lake City allows one accessory dwelling unit per lot, but the property owner must live on site, and a detached ADU…

South Jordan permits ADUs only in A-5, A-1, R-1.8, R-2.5, R-3, R-4 and R-5 zones, with minimum lot sizes, parking, and…

Spanish Fork permits ADUs in residential zones (except A-E, R-4, R-5, R-O) with a minimum 6,000 sq ft lot…

St. George allows one accessory dwelling unit per single-family lot, but only if the owner lives on-site and the ADU is…

Utah County allows one Accessory Dwelling Unit per lot in unincorporated zones where ADUs are a permitted use, capped…

Washington County allows one ADU on any lot under 5 acres, with one more per additional 5 acres and a hard cap of four…

Weber County allows one accessory dwelling unit per single-family lot where the zone permits it, with a footprint…

West Jordan allows one accessory dwelling unit per residential lot, internal or detached, under section 13-5B-8. A…

Before a Lehi accessory dwelling unit can be built, the owner must clear a separate Building Division review beyond…

Eagle Mountain requires the property owner to actually live in the home containing an accessory dwelling unit, in…

Layton requires the property owner of record to live in either the primary home or the accessory dwelling unit as a…

Salt Lake City requires the property owner to live on-site wherever an accessory dwelling unit is built, with narrow…

The property owner must live in either the main house or the ADU on any accessory dwelling unit lot in unincorporated…

Sandy requires the property owner to reside in the primary dwelling as their actual primary residence before an…

West Valley City requires the property owner to live in either the main house or a detached ADU, and bars renting an…

Lehi will not license an accessory dwelling unit unless the owner of the primary home actually lives there. Section…

Orem allows an accessory apartment only inside an owner-occupied detached single-family home, never in the R5 or PRD…

South Jordan requires the property owner of record to live on-site as their legal residence for any accessory dwelling…

St. George requires an owner-occupant to live in either the single-family home or the accessory dwelling unit before…

In unincorporated Washington County, an accessory dwelling unit or the main house must be owner-occupied at least 183…

Weber County requires that either the accessory dwelling unit or the primary single-family home stay owner-occupied at…

Eagle Mountain bars renting an accessory dwelling unit for anything under 30 consecutive days. EMMC 17.70.030(I) flatly…

Layton's accessory dwelling unit ordinance flatly bars short-term rentals: Section 19.06.300(2)(j) requires any ADU…

Sandy City prohibits renting an accessory apartment, extended living area, or guesthouse for less than 30 consecutive…

St. George bans short-term rental of accessory dwelling units outright and only permits an ADU where the property owner…

Neither the primary single-family home nor its accessory dwelling unit may be used or licensed as a short-term, or…

An ADU in unincorporated Salt Lake County cannot be rented at all without a business license, and once licensed it can…

South Jordan bans renting an internal accessory dwelling unit for stays under 30 consecutive days, keeping IADUs…

A Utah County Accessory Dwelling Unit larger than 1,000 square feet, up to a 1,500-square-foot ceiling, requires the…

Washington County bars short-term rental use of either an accessory dwelling unit or its associated single-family home…

West Valley City requires a business license to rent an ADU and sets minimum stay lengths: 90 consecutive days for a…

Lehi requires an active ADU license for as long as an accessory dwelling unit is rented, and Section 26.030(H) forces a…

An Orem accessory apartment must carry a rental dwelling license under Orem City Code Section 22-6-9(I)(9) and Article…

Renting out either half of an agricultural-zone accessory dwelling unit in West Jordan requires a valid city business…

Davis County Code Section 15.20.130 caps how big an accessory building can get and where it can sit. A shed, barn or…

Accessory buildings like sheds and garages in Eagle Mountain's residential zones must sit at least 5 to 10 feet off the…

Lehi bars accessory buildings and sheds from any required front yard and from utility easements, caps rear-yard…

Orem City Code 22-6-8(D) caps the combined footprint of all accessory buildings at 8% of a single-family parcel (12%…

Provo treats sheds, gazebos, and other detached accessory buildings under its yard-requirement code (14.10.080)…

Salt Lake City requires a building permit for accessory structures like sheds and limits them to one foot from side and…

In unincorporated Salt Lake County's R-1 zones, an accessory building like a shed or detached garage stays a permitted…

Sandy caps most residential accessory buildings at 25 percent of the rear yard or a set square-footage ceiling based on…

South Jordan lets a low backyard shed sit as close as 5 feet from the side property line and 3 feet from the rear, but…

St. George exempts small one-story accessory structures from a building permit: sheds under 200 square feet can go in…

In unincorporated Washington County, a shed or other accessory building can cover no more than 25% of a residential lot…

Weber County Land Use Code § 108-7-16 sets setback and height standards for any accessory building of 1,000 square feet…

West Jordan limits accessory buildings, including sheds, to 20 percent coverage of the rear, corner side, or front yard…

West Valley City lets a rear-yard accessory building, such as a shed, sit as close as one foot from side and rear…

Sheds and detached accessory structures in Spanish Fork require building permits. Structures under 200 square feet may…

Sandy allows an existing garage, shed, or workshop to be converted into a guesthouse if it meets all guesthouse…

Converting a garage to living space needs a building permit. Utah law lets an attached garage count as an internal ADU…

Orem City Code 22-6-10(J) allows enclosing a pre-March-2000 attached carport into a garage if it sits at least 5 feet…

Provo permits an accessory apartment created over an attached garage or by conversion inside the home, and Utah Code…

Salt Lake City lets pre-1995 garage-to-living-space conversions on single-family and two-family lots become legal only…

An existing garage in unincorporated Salt Lake County can become an accessory dwelling unit, but it must meet every ADU…

Garage conversions to living space require a building permit in Spanish Fork. Converting a garage to an ADU or…

Converting an existing garage or carport into an accessory dwelling unit is allowed, but St. George requires the lost…

An attached garage that was required to meet a home's parking standards cannot become living space in West Jordan…

Converting a home's garage into living space in West Valley City requires replacing every lost parking space first…

Utah regulates tiny homes through the State Construction Code. Tiny homes on permanent foundations must meet the IRC…

Orem allows only one single-family dwelling per residential lot (22-6-8(F)), prohibits using a detached accessory…

A permanent Tiny Home on Foundation can be a primary or accessory dwelling if it meets 2021 IRC Appendix AQ. A Tiny…

Salt Lake City's zoning code defines a "Tiny House" as its own building type, capped at 400 square feet on a permanent…