Davis County · about 24,000

Clinton

Detached allowed

Clinton updated its ADU ordinance in 2025 (Ordinance 25-01Z). The city treats internal, attached, and detached units, with a size limit of 50% of the primary habitable area, up to 1,500 square feet.

Internal ADU: Permitted, subject to the 2025 ordinance and fire-code references in the zoning title.
Detached ADU: Included in the 2025 update. Confirm current setbacks and lot standards with Clinton Community Development.
Lot: Confirm with the city. A lot of 11,000 square feet or larger with a permitted house is covered by the statewide rule now in effect.
Size: The 2025 text caps an ADU at 50% of the primary livable area, and in no case more than 1,500 square feet. Ordinance 26-02Z, adopted August 25, 2026, clarified foundations, a preliminary site plan, and a 25% rear-yard impervious limit that counts patios and driveways. We did not see that ordinance repeal the 1,500 square foot figure.
Parking: Per ordinance, in addition to parking for the main house.
Owner occupancy: Owner occupancy is required.
Rental: Long-term occupancy. Confirm short-term rental with the city.
Design: Separate utility meters for the ADU are prohibited. Keep a single-family appearance.

Notes

The March 2025 council action is Ordinance 25-01Z. Ordinance 26-02Z, adopted August 25, 2026, is the later clarification. The city lists 26-02Z among adopted ordinances not yet folded into Municode.

Source: Clinton Ordinance 25-01Z; Title 28.

Statewide floor

Senate Bill 284, Utah Code §10-21-304, has been in effect since October 1, 2026. Every city on this list must allow a detached ADU as a permitted use — not a conditional use — on a lot of 11,000 square feet or larger that already has a permitted single-family house. A city may also allow one on a smaller lot. It may still set size, height, coverage, setbacks, and owner occupancy, and it may require that the unit not be larger than the house, not sit in the front yard, and not be rented for fewer than 90 days. Parking may not exceed one stall under 650 square feet, or two stalls at 650 square feet and above. A printed ban, or a conditional-use requirement, on a qualifying lot conflicts with the statute even if the code book is late. Confirm the city’s ordinance before anyone draws.

Inquire about a lot in Clinton

We verify the ordinance that applies to your parcel as part of feasibility. Clinton City