Huntington Beach has been the subject of concurrent enforcement letters from HCD and the Attorney General warning that pausing SB 9, SB 10, and ADU processing would violate state law. State ADU rules apply directly when local rules conflict.
Confirm size, setbacks, and parking on the live Planning/Zoning ADU page or in the current zoning code.
State guarantee: California requires every city to allow at least an 800 sq ft ADU exempt from local lot coverage, FAR, and front-setback rules.
Height baseline: 16 ft for detached, rising to 18 ft within ½ mile of major transit. Attached ADUs follow the primary home, capped at 25 ft.
Confirm current local parking and exemption rules on the live ADU page.
State law requires ministerial ADU review within 60 days of a complete application. The city remains subject to ongoing state enforcement scrutiny.
State backstop: A complete ADU permit must receive a decision in 60 business days. If the city stalls past 30 business days, AB 253 lets you hire a certified private plan checker to force a 10-business-day decision.
Confirm via the Permit Center.
SB 543: No impact fees on ADUs ≤750 sq ft. Above 750 sq ft, fees scale to the ratio of ADU size vs the main home.
Standard ADUs in Huntington Beach: no owner-occupancy required (made permanent in 2023).
JADUs: limited to 500 sq ft of interior livable space within an existing single-family home. Owner occupancy is required only when sanitation facilities are shared with the main house. JADUs cannot be used as short-term rentals (AB 1154 / SB 543).
Sketch a floorplan, walk through it in 3D, and have our planners review it for size, height, and setback compliance before you submit to Huntington Beach.
Heads up: Local rules change frequently. This page summarizes publicly available state law (California Government Code §§ 66310–66342) and current local guidance for general planning purposes. Always confirm specifics with the Huntington Beach planning desk before submitting plans. ADUMetrics does not provide legal advice.