General Contractor in Farmington, Utah

Ordinance 2025-37 lists detached and internal ADUs as permitted uses in every single-family residential and agricultural zone in Farmington. Section 11-28-200 of the city code, last revised by Ordinance 2024-62 on December 17, 2024, sets conditions that include these, in its own order.

• Planning Department review of every internal ADU application
• An ADU only as part of, or in conjunction with, a single-family dwelling, and a detached ADU within the zone's height and building footprint standards for accessory buildings
• One ADU per single-family dwelling, apart from the separate ownership provisions of Subsection F, with no more than one dwelling unit in the ADU
• At least one off-street stall for the ADU, beyond what the home requires, built to the city's parking standards
• A detached ADU no larger than the footprint of the original single-family dwelling, and an internal ADU no larger than that dwelling's floor area
• No internal ADU on a lot of less than 6,000 square feet, and no detached ADU on a lot of less than 10,000 square feet
• The construction, housing, and building codes in effect when the ADU is built, and the procedures and requirements of the city's building regulations
• A permanent concrete foundation, with the unit installed and secured to it under the building codes
• Occupancy by one family only
• Owner occupancy of either the single-family dwelling or the ADU
• A temporary owner absence of up to 12 months, for circumstances such as military assignments, employment, family obligations, and quasi-public service, during which the owner may rent both units
• An extension of that period by the Zoning Administrator on sufficient evidence that the circumstances will last longer than one year, with a temporary absence authorized only when the application includes a definite termination date
• A notice of the ADU that the city may record with the Davis County Recorder
• A site development application under Chapter 7 of the zoning title when the ADU's permitted use or conditional use permit is considered for approval
• A detached ADU allowed in separate ownership as a Subordinate Single-Family dwelling, with its own culinary water and sewer laterals and metering in place before anyone moves in, and two years of owner occupancy after it is first sold or divested apart from the home

Ordinance 2024-41 provides that it sunsets on July 16, 2027, unless the City Council extends it by resolution, and that the code language then reverts to its pre-amendment text. Under the ordinance, the reversion is not applied to deny a land use application filed before that date.

Utah's ADU statutes apply in Farmington as well, as our ADU page explains.

Sources: Farmington Ordinance 2024-41; Ordinance 2024-62; Ordinance 2025-37; Utah Code 10-21-303; Utah Code 10-21-101. We confirm which version of Section 11-28-200 governs your lot, and each of its conditions, during preconstruction.