Weber County · about 7,000
Harrisville
Confirm detached with the city
Harrisville had an internal-ADU rule and drafted Ordinance 569 to add detached units. It was discussed September 8, 2026. The draft allows one ADU, requires the owner to live on the property, ties detached size to the lesser of 10% of the lot or the primary floor area, and aims to prevent short-term rental. We have not found minutes showing that draft was adopted. State law already requires a permitted detached unit on a lot of 11,000 square feet or larger.
- Internal ADU
- Previously permitted under the city’s internal-ADU rule and House Bill 82.
- Detached ADU
- Required by state law on a qualifying lot. Treat the 10% size figure as draft language until planning confirms Ordinance 569.
- Lot
- 11,000 square feet is the statewide detached floor, now in effect. The September draft also set local minimums — confirm those numbers in the adopted text.
- Size
- Draft: the lesser of 10% of the lot area or the primary dwelling’s gross floor area. A city may set a size limit. Confirm what was voted.
- Parking
- Draft: one stall under 650 square feet, two above that, which matches the state cap.
- Owner occupancy
- Owner occupancy is typical. Confirm.
- Rental
- Long-term occupancy is the usual rule.
- Design
- Setbacks, height, and coverage remain local.
Notes
Harrisville planning is the first call. We will make it with you in feasibility.
We verify the ordinance that applies to your parcel as part of feasibility. Harrisville City
