Sonoma County, CA Building Safety: Electrical Permits (2026)
Key Facts
- Electrical code adopted
- 2025 California Electrical Code (CCR Title 24, Part 3)
- Permit exemptions
- Seven electrical items, listed in Sec. 7-13(c)(2)
- Permit validity
- Invalid if work not started or suspended for 12 months
- Extensions
- Written, up to 180 days each, with justifiable cause
- Appeal deadline
- 30 days from the building official's decision
- Maximum penalty
- $1,000 fine, six months in jail, or both, per day
- Fee refund
- 90% of electrical permit fee before any work or inspection
Summary
Sonoma County requires an electrical permit for wiring work outside seven narrow exemptions, and Sec. 7-13 adopts the 2025 California Electrical Code (CCR Title 24, Part 3) as the standard that work is built to. Exempt jobs include lamp replacement, receptacle swaps, and same-capacity, same-location branch circuit breaker replacement.
CCR, Title 24, Part 3, 2025 California Electrical Code (CEC). ... 105.2 Work exempt from permit. Exemption from permit requirements of this section shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of the jurisdiction. Such exempt structures must meet all other applicable requirements of this jurisdiction, including required minimum distances from property lines. Permits shall not be required for the following: ... Electrical Permit Exemptions: 1. Minor repair work, including the replacement of lamps or the connection of approved portable electric equipment to approved permanently installed receptacles. ... 4. Listed cord and plug connected temporary decorative lighting. 5. Reinstallation or replacement of attachment plug receptacles, but not the outlets therefor. 6. Repair or replacement of branch circuit overcurrent devices of the required capacity in the same location. 7. Installation or maintenance of communications wiring, devices, appliances, apparatus, or equipment.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 64 Update 2).
Full Breakdown
Section 7-13(a)(4) of the Sonoma County Code adopts CCR Title 24, Part 3, the 2025 California Electrical Code, by reference. The same subsection adopts the 2025 Building, Residential, Mechanical, Plumbing, Energy, Existing Building and Green Building codes, and the county keeps each of them except where later subsections change the text. Ordinance No. 6539, adopted December 9, 2025, is the latest amendment to the section.
The exemption list is in section 7-13(c)(2), which rewrites CBC Section 105.2. It opens with a rule that matters more than any single item: an exemption does not authorize work that violates the code or any other law, and exempt work must still meet every other county requirement. Seven electrical jobs need no permit: minor repair work, including replacing lamps or plugging approved portable equipment into approved permanent receptacles; radio and television transmission equipment (but not its power supply wiring, towers or antennas); temporary systems for testing or servicing electrical equipment; listed cord and plug connected temporary decorative lighting; reinstalling or replacing attachment plug receptacles, but not the outlets; repairing or replacing branch circuit overcurrent devices of the required capacity in the same location; and installing or maintaining communications wiring and equipment.
Section 7-13(b) amends the administrative rules that apply to electrical permits. Fees follow the schedule set by the Sonoma County Board of Supervisors. Incomplete or changed plans draw an additional plan review fee, a peer or third party review can earn a 25% plan review reduction, and the chief building official can waive the plan check fee for the second and later identical buildings for one year after the original payment. A permit becomes invalid if work does not start within 12 months of issuance or stops for 12 months, and the official can grant written extensions of up to 180 days each on a showing of justifiable cause. Work on an expired permit needs a new or renewed permit covering everything left to finish, including completed work that was never inspected.
Violations & Fines
Violating Chapter 7 is a misdemeanor under Sec. 7-21: a fine of up to $1,000, up to six months in county jail, or both, with every day counting as a separate offense. Permit and Resource Management Department staff can issue citations, and each violation is declared a public nuisance. Anyone who works against approved documents or a permit also owes a review fee equal to the permit fee, and power cannot be reconnected to equipment the chief building official ordered disconnected until the official authorizes it.
Frequently Asked Questions
Do I need a permit to replace a receptacle in Sonoma County?
How long does a Sonoma County electrical permit last?
How do I appeal a building official decision on electrical work?
Can I get a refund if I cancel an electrical permit?
Sources & Official References
Other rules in Sonoma County
California rules heatmap·Compare Sonoma County to another location·View the California building safety overview
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