ADU rules in Cedar Hills

ADUs are permitted in all residential zones as a conditional use, and the parking rules expressly contemplate accessory dwellings not internal to the single-family dwelling (two spaces required). But nearly every other condition is written for accessory apartments inside a single-family home, and the appearance clause requires the home to keep its single-family look, so confirm detached feasibility with the city before designing one.

One accessory apartment is allowed within a single-family home in all residential zones, subject to a conditional use permit approved by the Zoning Administrator and building official. Interior access must be maintained when the unit is inside the main dwelling; a dedicated entrance may be on any side or rear (front only if below grade). Not allowed in multi-family dwellings.

Section 10-5-32 sets no floor-area limit for accessory dwelling units; the constraints are one accessory apartment per single-family home and no change to the home's outward single-family appearance.

The owner (per Utah County tax rolls, or the trustor/trustee for trust-owned homes) must live full time in either the primary dwelling or the ADU. Exceptions: a bona fide temporary absence of three years or less (job assignment, sabbatical, voluntary service) with a family member living at the residence and a temporary-absence application filed after at least one year of residency, or placement in a hospital or care facility with a family member in residence.

One additional off-street space for internal ADUs beyond what the single-family home requires; minimum two spaces for accessory dwellings not internal to the dwelling. No ADU is allowed on a lot that cannot satisfy parking. Spaces may not sit in a front or side yard except in an approved driveway; tandem driveway parking counts.

Conditional use permit approved administratively by the Zoning Administrator and building official (the section names no planning-commission hearing), plus a one-time registration fee and ADU registration with a site plan. The permit is valid for the year issued and auto-renews on evidence of owner occupancy and continued compliance; unregistered units are not legal.

The ADU may only be rented to one family as defined in §10-2-1. It may not be sold or detached by deed and shall only be rented. The registration permit becomes null and void when the home is sold; the buyer must apply for a new permit.