Civic Data Works · Plans catalog · City of Norco

City of Norco — preapproved ADU plans

City of Norco ( County) posts 3 preapproved accessory dwelling unit plans on its own website, verified 2026-08-03.

Agency: City of Norco
County
Plans posted: 3
Verified: 2026-08-03

What’s posted

Norco's Building & Safety Standard Drawings page links to a folder ('Accessory Dwelling Units (ADU) Preapproved Plans') containing six real, distinctly named PDF files: Full Set of Plans + Structural Calculations for 499 sq ft, 720 sq ft, and 1,000 sq ft ADUs, hosted directly on norco.ca.us.

Sources: https://r.jina.ai/https://www.norco.ca.us/departments/building-safety/standard-drawings, https://www.norco.ca.us/home/showpublisheddocument/2571/639077245567270000

ADVERSARIAL RE-CHECK PASSED: first proxy fetch only showed a folder reference with no visible files (looked empty). Second, independent proxy fetch resolved the folder's actual href and re-fetched it, listing six real, uniquely named PDFs. No purchase or email-gate language found. Classified posted after upgrade.

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 Norco’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 Norco’s plans have moved or you find an error, write to [email protected] and we will correct this page. Back to the full catalog.