Davis County · about 24,000

North Salt Lake

Detached allowed

North Salt Lake publishes a clear ADU page: basement, attached, detached, second-story over a garage, and tiny homes on single-family lots. Typical local size is 300–1,200 sf and two bedrooms maximum.

Internal ADU: Permitted (including basement apartments), with land-use and building permits for new work.
Detached ADU: Permitted, including a second story over a garage. New construction needs a land-use permit and a building permit.
Lot: Single-family lots. A lot of 11,000 square feet or larger with a permitted house is covered by the statewide rule now in effect. The city already allowed detached units on single-family lots, including smaller ones.
Size: The city’s published range is often 300–1,200 square feet and not more than two bedrooms. A fixed cap is still lawful. Confirm the current table.
Parking: One additional off-street stall where required, and not more than the state cap: one stall under 650 square feet, two at 650 and above.
Owner occupancy: Owner occupancy is the usual local requirement. Confirm on the permit form.
Rental: Short-term rental has been allowed with a land-use permit and business license — confirm, because STR rules move.
Design: Safety items are listed on the city’s ADU page: smoke and CO detectors, GFCI, water-heater straps, egress windows.

Notes

The land-use permit itself is listed as no fee; the building permit is separate.

Source: nslcity.org/519 and the city’s ADU land-use permit.

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 North Salt Lake

We verify the ordinance that applies to your parcel as part of feasibility. North Salt Lake ADUs