Solano County, CA Building Safety: Green Building Code (2026)
Key Facts
- Adopted standard
- CALGreen, 2025 Edition (Title 24, Part 11)
- Adopting authority
- Solano County Code Sec. 6.3-03
- Code family
- Adopted with Building, Residential, Energy Codes
- Amendment process
- Board of Supervisors hearing, 90-day notice
- Records custodian
- Department of Resource Management
Summary
Solano County enforces the 2025 edition of the California Green Building Standards Code (CALGreen) as part of its adopted building code family under Chapter 6.3. Every new building permit in the unincorporated county is reviewed against CALGreen's requirements alongside the Building, Residential, and Energy Codes.
The California Building Standards Code, 2025 Edition, known as the California Code of Regulations, Title 24 (CCR, T-24) as adopted by the State of California Legislature, is adopted by reference as the Building Code of the County of Solano, incorporating Parts 1, 2, 2.5, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, known collectively as California Building Standards Code and respectively as California Administrative Code, California Building Code, California Residential Code, California Electrical Code, California Mechanical Code, California Plumbing Code, California Energy Code, California Wildland-Urban Interface Code, California Historic Building Code, California Fire Code, California Existing Building Code, California Green Building Standards Code (CALGreen)... (12) The California Green Building Code, 2025 Edition, together with the appendices as published by the International Code Council.
Official source re-checked September 8, 2026: no newer edition of the code had been published (publisher’s edition: current through Ordinance 1868, passed April 9, 2026).
Full Breakdown
Sec. " Subsection (a)(12) then separately itemizes "The California Green Building Code, 2025 Edition, together with the appendices as published by the International Code Council" as one of the specific parts adopted. Because CALGreen is Part 11 of Title 24, it applies alongside the California Building Code, Residential Code, Energy Code, and other Title 24 parts to any covered construction in the unincorporated county, governing areas such as construction waste diversion, water and material efficiency measures, and other sustainability standards tied to the building permit process.
The county's Department of Resource Management is required under Sec. 3-04 to keep copies of all adopted codes, including CALGreen, on file for public inspection. If the state amends CALGreen going forward, Sec. 3-08 requires the Building Official to report the newly adopted code to the Board of Supervisors, which must schedule a public hearing at least 90 days out and place copies of the proposed code in the Building Official's office for public review before the Board adopts it with any local amendments.
Violations & Fines
Constructing, altering, or occupying a building in violation of the adopted Green Building Standards Code is an infraction under Sec. 6.3-09(a) and (e), with continued noncompliance after citation counted as a new violation for each additional day. Sec. 6.3-09(f) adds liability for the county's costs, expenses, and disbursements incurred in correcting, abating, and prosecuting the violation, and Sec. 6.3-09(d) authorizes the Building Official and deputies to issue citations directly.
Frequently Asked Questions
Does Solano County have its own green building code?
What Title 24 part is CALGreen under Solano County's adopted code?
How would I find out if the county has updated its green building requirements?
Sources & Official References
Other rules in Solano County
California rules heatmap·Compare Solano County to another location·View the California building safety overview
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