Weber County · about 89,000

Ogden

Detached allowed, tightly sized

Ogden has the most detailed ADU ordinance in Weber County. Detached units are permitted, but they are small: 300–800 sf and not more than 25% of the rear yard. The house must keep a single-family face to the street.

Internal ADU

Permitted. New entrances go on the side or rear, not the front.

Detached ADU

Permitted. Not less than 300 sf and not more than 800 sf. Detached structures may not occupy more than 25% of the rear-yard area, counting other accessory buildings.

Lot

Rear-yard area often governs more than lot size. From October 1, 2026, lots of 11,000 sf or larger with a house have a statewide permitted-use path; local setbacks and coverage still apply.

Size

300–800 sf for a detached unit under current §15-13-39. After October 1, 2026, a fixed cap may have to yield on qualifying lots except that the ADU cannot exceed the primary dwelling — confirm how Ogden implements that.

Parking

Two existing off-street spaces for the main house must remain. Tandem driveway parking is acceptable. No widened driveways or side-yard parking slabs for the ADU.

Owner occupancy

The property is the owner’s primary residence. On sale, the ADU permit is voided and the new owner reapplies.

Rental

Short-term rental of an ADU is restricted. Do not plan on nightly rental.

Design

Single-family appearance from the street. Side or rear entry. Height follows the residential zone (often up to 35 feet for the principal building).