Aliso Viejo adopts state-law update to accessory-dwelling-unit rules

Aliso Viejo has adopted a citywide ordinance amendment updating local rules for accessory dwelling units and junior accessory dwelling units, commonly known as ADUs and JADUs. The stated purpose is to bring the municipal code into compliance with recent changes in California law.

The amendment changes Section 15.14.080 of the Aliso Viejo Municipal Code. The update affects the local rules used by homeowners, renters and builders when proposing or permitting backyard homes and junior accessory units, although the available state notice does not establish whether any particular project has been approved.

The California Governor’s Office of Land Use and Climate Innovation said it received and posted the notice on February 5, 2026. The notice identifies the action as citywide in Aliso Viejo and says the ordinance qualifies for a statutory exemption from the California Environmental Quality Act under Public Resources Code section 21080.17.

What remains unavailable

The located materials do not include the full ordinance text. They therefore do not establish any specific changes to setbacks, parking, height, lot-size requirements or approval procedures. The effective date and an implementation timeline also were not stated. No further city action or deadline is identified in the available packet.