Cal Surplus Land · Plans catalog · City of San Marcos
City of San Marcos — preapproved ADU plans
City of San Marcos ( County) posts 10 preapproved accessory dwelling unit plans on its own website, verified 2026-10-05.
- Agency
- City of San Marcos
- County
- Plans posted
- 10
- Verified
- 2026-10-05
What’s posted
City's Permit-Ready ADU (PRADU) program, designed by SnapADU via competitive bid specifically for San Marcos, offers 10 named pre-approved plan PDFs (498-999 SF, various configurations) hosted in a linked Dropbox folder.
Sources: https://www.sanmarcosca.gov/Business-Services/Building-Division/Permit-Ready-ADUs, https://www.dropbox.com/scl/fo/qbsbp2khpdgf88unn10z6/AGg5HybZEt1OmIuZyfZTHFU
Direct fetch of the city's PRADU page succeeded and surfaced the Dropbox link as the 'See the plans' source. Independent second check: fetched the Dropbox folder via r.jina.ai proxy, which listed 10 distinct named PDF files (last modified March 2025, 43-70MB each), confirming real, current, downloadable plan sets.
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 San Marcos’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).
If City of San Marcos’s plans have moved or you find an error, write to ryan@civicdataworks.com and we will correct this page. Back to the full catalog.