Davis County · about 45,000

Bountiful

Confirm the September text

The published code treated a new detached ADU as a conditional use, commonly 350–1,250 square feet on a lot with at least 8,000 square feet of buildable area. Ordinance 2026-08 was posted on the state notice site on October 7, 2026, dated as adopted September 22. The file has blank signature lines and does not include Exhibit A, so the signed standards are still not in hand. A conditional-use permit on a qualifying lot conflicts with state law. Confirm the signed exhibit before using the old size range.

Internal ADU: Yes, by staff review. The house must remain a single-family dwelling from the street.
Detached ADU: Still described on the city’s ADU page as a conditional use. That path is no longer lawful on a lot of 11,000 square feet or larger in a residential zone. The September draft kept owner occupancy, a deed restriction, one unit, and the older setback and coverage rules, and the commission asked to drop the 350–1,250 square foot range.
Lot: Older local practice: about 8,000 square feet of buildable area, which the state allows because it is below 11,000. The statewide rule now requires a permitted detached unit on a lot of 11,000 square feet or larger with a house.
Size: The older published range is 350–1,250 square feet, and a footprint often capped at 10% of the lot (15% with extra approval). A city may still set a size limit. Confirm whether the September ordinance kept that range or followed the commission and dropped it.
Parking: One additional off-street stall in the older guide. The state cap is one stall under 650 square feet, two at 650 and above.
Owner occupancy: Required. A deed restriction is recorded at the county.
Rental: Long-term occupancy is the default. Short-term rental is allowed only with a separate STR permit — unusual in Davis County.
Design: No separate utility meters. Entry and appearance must read as a single-family lot, not a duplex.

Notes

Source: Bountiful Land Use Code §14-14-124, the city’s ADU page, and the October 7, 2026 posting of Ordinance 2026-08. The staff report kept 350–1,250 square feet. The planning commission recommended dropping that cap. The posted ordinance does not attach the exhibit, so neither number is confirmed.

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 Bountiful

We verify the ordinance that applies to your parcel as part of feasibility. Bountiful Planning