California 2025 / Sonoma County building codes

What's in this group15 books

Local amendments & ordinances

The layer that trips people up. You can know the state requirement perfectly and still get a comment because Sonoma County changed it.

• Sonoma County - Title 29 Hazardous Materials ManagementSCMC29
• Sonoma County - Titles 11, 11A, and 11BSCMC11
• Sonoma County - Titles 13 and 13ASCMC13
• Sonoma County - Titles 26, 26A, 26C, and 26DSCMC26
• Sonoma County - Titles 7-7D5 Building RegulationsSCMC7

Model & state codes

• 2025 California Administrative CodeCAC
• 2025 California Building CodeCBC
• 2025 California Energy CodeCEnC
• 2025 California Existing Building CodeCEBC
• 2025 California Fire CodeCFC
• 2025 California Green Building Standards CodeCGBC
• 2025 California Historical Building CodeCHBC
• 2025 California Reference Standards CodeCRSC
• 2025 California Residential CodeCRC
• 2025 California Wildland-Urban Interface CodeCWUIC

Related code groups

Other editions for Sonoma County, and neighbouring jurisdictions on the same cycle.

• California 2022 / Sonoma County14
• California 202510
• California Fire 202510
• California 201610
• California 201912
• California 20229
• California 2025 / Central Fire of Santa Cruz County4
• California 2025 / Contra Costa County11
• California 2025 / LA County13

Questions

Which codes does Sonoma County use?

Sonoma County is covered by 15 books in Ichi, on the 2025 cycle: CAC, CBC, CEnC, CEBC, CFC, CGBC, and 9 more. The full list is above.

Does Ichi include Sonoma County's local amendments?

Yes — 5 local books: Sonoma County - Title 29 Hazardous Materials Management; Sonoma County - Titles 11, 11A, and 11B; Sonoma County - Titles 13 and 13A; Sonoma County - Titles 26, 26A, 26C, and 26D; Sonoma County - Titles 7-7D5 Building Regulations. Amendments are loaded as first-class books, not footnotes on the model code, so an answer reflects what Sonoma County actually enforces.

How current is this code group?

Code groups are maintained in the Ichi platform and this page reflects that library directly. New books, editions and amendments are added on an ongoing basis, and jurisdictions can be added on request.

Can I read the full code text here?

This page lists coverage — which books, which edition, which amendments. The code text itself lives inside Ichi, where it's delivered under our licensing agreements with the ICC and other publishers, and where every answer links to the exact section it came from.