Weber County · about 39,000

Roy

Confirm detached with the city

Internal accessory dwellings are permitted. We did not find a 2026 detached ordinance with a recorded vote. State law now requires a permitted detached unit on a lot of 11,000 square feet or larger with a house. Long-term occupancy and an extra stall are the usual local extras. Roy also licenses rentals.

Internal ADU: Permitted. Rental licensing may apply if the unit is leased.
Detached ADU: Confirm the local table with Roy Community Development. On a qualifying lot the use is permitted under state law, not conditional.
Lot: 11,000 square feet is the statewide detached floor, now in effect. The city may allow a smaller lot.
Size: Per ordinance. The city may limit size and may require that the unit not exceed the house.
Parking: Typically one additional space.
Owner occupancy: Owner occupancy is required.
Rental: Thirty days or more. Roy licenses rentals — plan for that paperwork.
Design: Setbacks, height, and coverage remain local.

Notes

Ask Roy about both the zoning path and the rental-licensing path. They are separate counters.

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 Roy

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