Davis County · about 17,000

Centerville

Detached permitted on 8,500 sf lots

Ordinance 2026-20 was adopted September 15, 2026, on a 3–2 vote, and is now Chapter 12.58 of the zoning code. A detached unit is a permitted staff review, not a conditional use, on an owner-occupied lot of at least 8,500 square feet. The code also allows one internal unit on the same lot.

Internal ADU

Permitted. One internal unit may sit on the same lot as one detached unit. Parking for each is in addition to the parking for the house.

Detached ADU

Permitted by the zoning administrator under the permitted-use review. Rear yard on an interior lot. On a corner lot, the side yard, or the front yard only as 12.58.060(g) allows. Not a second story. Not on a slope of 30 percent or more, and not in a recorded easement.

Lot

8,500 square feet, which is below the state floor and therefore allowed. A lot of 11,000 square feet or larger is covered as well.

Size

350 to 1,250 gross square feet. No single level may exceed 800 square feet. A basement is allowed and counts toward the 1,250.

Parking

One additional stall under 650 gross square feet; two at 650 and above. Tandem is allowed. Stalls sit behind the front-yard setback. Parking required for the house stays, or is replaced if the new work removes it.

Owner occupancy

The owner lives in the house or the unit for at least 183 consecutive days a year, as shown on the Davis County assessment roll. A one-time absence — job, military, medical, sabbatical, school, or illness — may be waived for up to three years and one month. Otherwise the permit ends.

Rental

Not fewer than 90 consecutive days. The city records a notice against the property. The unit is for family or that long-term rental, not a short stay.

Design

Sixteen feet maximum. No second story on the accessory building. Eight feet from the rear line on an interior lot, six feet from the house, and eight feet from the side. On a corner, twenty feet from the front line on the street side. Separate meters are allowed, in the owner’s name, without a new water development fee unless the owner asks for a new connection.