Civic Data Works · Plans catalog · County of San Benito

County of San Benito — preapproved ADU plans

County of San Benito ( County) posts 6 preapproved accessory dwelling unit plans on its own website, verified 2026-08-06.

Agency: County of San Benito
County
Plans posted: 6
Verified: 2026-08-06

What’s posted

San Benito County RMA's 'County Pre-approved ADU Building Plans' page lists 6 named models (Model 1, Model 2.2, Model 3, Model 4, Model 5, Model 6), each with its own unique 'ADU Plans' downloadable document plus shared Plan Submittal Requirements, Building Permit Application, and Liability Waiver documents. Page states: 'Plans can be downloaded from this page at no charge.'

Sources: https://www.sanbenitocountyca.gov/departments/resource-management-agency/building-and-code-enforcement-division/county-pre-approved-adu-building-plans-copy, https://www.sanbenitocountyca.gov/departments/resource-management-agency/building-and-code-enforcement-division/pre-approved-county-standard-adu-building-plans

Read via reader proxy. Independent local press (BenitoLink, SanBenito.com -- not fetched directly, cited only as corroboration) describes the 6 CallisonRTKL-designed models as ranging 400-1,500 sq ft, e.g. a 1,500 sf 3bd/2ba+loft model and a 750 sf 1bd/1ba+loft model, consistent with 6 models seen live on the page. Adversarially re-verified 2026-08-06 by an independent re-fetch agent: Fetched sanbenitocountyca.gov/departments/resource-management-agency/building-and-code-enforcement-division/pre-approved-county-standard-adu-building-plans directly (via proxy). Page shows 6 named models (Model 1, 2.2, 3, 4, 5, 6), each with a downloadable ADU Plans PDF plus submittal requirements, permit application, and liability waiver PDFs.

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