Civic Data Works · Plans catalog · County of San Luis Obispo
County of San Luis Obispo — preapproved ADU plans
County of San Luis Obispo ( County) posts 3 preapproved accessory dwelling unit plans on its own website, verified 2026-07-30.
- Agency
- County of San Luis Obispo
- County
- Plans posted
- 3
- Verified
- 2026-07-30
What’s posted
The county's Pre-reviewed ADUs page offers county-reviewed plans free to single-family property owners and lists three named pre-reviewed plans: Blueblossom, Manzanita, and Sage.
Gap from a fully compliant program: The landing page does not show sizes/bedroom counts or direct plan downloads (users go through an inquiry form and the permit process), and no third-party submission process is mentioned.
Page fetched and verified 2026-07-30; plans are county-developed (counts under 65852.27(a)(5)); page states plans cannot be modified. Adversarially re-verified 2026-07-30: landing page re-fetched ('As of February 2026, the County offers three design options... Blueblossom, Manzanita and Sage') with live per-plan subpage links on slocounty.ca.gov; the Blueblossom subpage was fetched and is populated (The Farm variant, 4bd/1,200sf, floorplan images, downloadable 'Blueblossom The Farm Plans' Bid Set PDF).
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 Luis Obispo’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).
Data from Civic Data Works’ AB 1332 compliance scan. If County of San Luis Obispo’s plans have moved or you find an error, write to [email protected] and we will correct this page. Back to the full catalog.