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Contra Costa County, CA Building Safety: Electrical Permits (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Key Facts

Adopted code
2025 California Electrical Code, Title 24 Part 3
Governing section
Ordinance Code § 76-2.002
Connection rule
Written county authorization required first
Unsafe equipment repair window
10 days after notice
Licensing
C-10 electrical contractor or owner-builder exception

Summary

Contra Costa County has adopted the 2025 California Electrical Code with local amendments as its controlling and enforceable electrical code countywide. No one may connect power to, or supply electric service to, electrical equipment requiring a permit without the county building official's written authorization first.

City-specific rules exist: Brentwood, San Ramon, and Antioch have their own electrical permits rules that differ from Contra Costa County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

(a)The electrical code of this county is the 2025 California Electrical Code (California Code of Regulations, Title 24, Part 3) ("CEC"), as amended by the changes, additions, and deletions set forth in this division and Division 72.(b)The 2025 California Electrical Code, with the changes, additions, and deletions set forth in Chapter 76-4 and Division 72, is adopted by this reference as though fully set forth in this division. ... (d)As of the effective date of the ordinance from which this division is derived, the provisions of the electrical code are controlling and enforceable within the county.

Source: Contra Costa Building InspectionView official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Ordinance Code: Supplement 103).

Full Breakdown

6 requires. 604 separately makes it unlawful to reconnect equipment the building official has ordered disconnected until the official authorizes reconnection in writing, and the official notifies the serving utility of any disconnect order. 402 gives the building official authority to inspect all electrical equipment and work, including equipment listed in CEC Sections 90-2(B)(4) and (5) that the CEC itself does not otherwise cover; if equipment is found dangerous or unsafe, the owner or operator must complete repairs within ten days of notice, or any longer period the building official allows, and any system posing an immediate, imminent hazard must be de-energized immediately.

206(c) limits electrical permits to a licensed California electrical contractor, or a general contractor performing two or more trades on the job, with an owner-builder exception for an owner who occupies and personally works on a one-family dwelling, including its accessory buildings; a person regularly employing electricians may instead hold an annual electrical permit and must report monthly work to the building official in the first fifteen days of the following month.

Violations & Fines

Connecting or supplying electrical service without the required permit and written authorization violates § 76-4.602; reconnecting equipment after a county disconnect order without written authorization violates § 76-4.604. Equipment the building official flags as dangerous must be repaired within ten days of notice, and any equipment posing an immediate hazard must be de-energized immediately by the owner or the building official.

Frequently Asked Questions

What electrical code does Contra Costa County enforce?
The 2025 California Electrical Code, adopted with local amendments under Ordinance Code § 76-2.002, controls all electrical work in the unincorporated county, with a copy kept on file at the building inspection division as required by state law.
Can I connect power to new equipment before my inspection is done?
No. Section 76-4.602 bars anyone from connecting a power source or electric service to permit-required equipment without the county building official's written authorization, and reconnecting after a disconnect order requires separate written approval under § 76-4.604.
Who is allowed to pull an electrical permit?
A licensed California electrical contractor, or a general contractor performing two or more trades on the job, under § 72-6.206(c). An owner who occupies and personally does the work on a one-family dwelling can also be issued the permit directly.

Sources & Official References

Other rules in Contra Costa County

All Contra Costa County rules

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Electrical Permits in Cities Across Contra Costa County