Civic Data Works · Plans catalog · City of Huntington Beach

City of Huntington Beach — preapproved ADU plans

City of Huntington Beach ( County) posts 1 preapproved accessory dwelling unit plan on its own website, verified 2026-08-06.

Agency: City of Huntington Beach
County
Plans posted: 1
Verified: 2026-08-06

What’s posted

City-run 'HB Pre-Approved ADU Plan' program per AB 1332: one prototype 1-story, detached 490 sq ft ADU design, offered in three exterior styles (California Ranch, Bungalow, Spanish Colonial). Program page links a brochure and a full 'Public Set' plan-set PDF, both hosted on the city's own CMS.

Sources: https://www.huntingtonbeachca.gov/departments/community_development/planning_zoning/accessory_dwelling_units_(adus).php, https://cms3.revize.com/revize/huntingtonbeachca/Documents/Departments/Community%20Development/Building%20Permit%20Application/Huntington%20Beach%20ADU%20-%20Public%20Set.pdf

Adversarial re-verify: independent curl HEAD on the 'Public Set' PDF returned HTTP 200, content-type application/pdf, 77,184,038 bytes, no auth/paywall, last-modified 2026-03-18 -- confirms a real, substantial downloadable plan set distinct from the brochure.

Any other agency can adopt these plans

Cal. Gov. Code § 65852.27, added by Stats. 2023, ch. 759, amended by Stats. 2024, ch. 7 (SB 477) (§ 65852.27(a)(5)) lets any California local agency admit into its own program plans “A local agency may also admit the following accessory dwelling unit plans into the program: (A) Plans that have been developed and preapproved by the local agency. (B) Plans that have been preapproved by other agencies within the state.” A city or county without a preapproval program of its own can post City of Huntington Beach’s plans as part of its own program instead of designing new ones — see the full statewide catalog for more options.

We build and maintain the program page, the plan library and the required third-party submission path for agencies that want to stand this up: $1,950 setup + $3,600/year (year one all-in $5,550).

Get started — $1,950 setup Questions? Email [email protected]

Data from Civic Data Works’ AB 1332 compliance scan. If City of Huntington Beach’s plans have moved or you find an error, write to [email protected] and we will correct this page. Back to the full catalog.