Weber County · about 25,000

West Haven

Detached allowed with a land-use permit

West Haven allows internal and detached accessory dwellings. A land-use permit and a site plan are part of the process. HOA covenants, common in newer west-side subdivisions, are the owner’s to resolve.

Internal ADU: Permitted.
Detached ADU: Permitted with a land-use permit. Site, floor, and parking plans are expected.
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: Per West Haven Code Chapter 19, including §§157.455–157.480. A size limit, if the city kept one, is still lawful, as is a rule that the unit not exceed the house.
Parking: Shown on the site plan, and not more than the state cap: one stall under 650 square feet, two at 650 and above.
Owner occupancy: Owner occupancy is required.
Rental: Confirm current short-term rules. Long-term occupancy is the safe assumption.
Design: Chapter 19 governs. Newer subdivisions often have covenants tighter than city code — those are yours to open.

Notes

We design to city code. If an HOA forbids a second dwelling, that is a covenant problem, not an architectural one.

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 West Haven

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