C-10 Electrical contractors

A C-10 contractor does the electrical work on a building or a site: the wiring, the panels, the fixtures, and the equipment that carries or uses electrical power.

That includes battery storage and solar when the work is part of the electrical system. The sentence that controls the class is the board's regulation, and the board can change it. Read that page before you decide a job is inside or outside the license.

CSLB's description of C-10 Electrical ↗

Active C-10 licenses

A sample with a bond and current workers' comp on the file.

Active C-10 licenses
BUSINESS	CITY	CLASSES	EXPIRES	LICENSE
365 Solar INC	Walnut	C-10	Expires Feb 29, 2028	1150110
5 Star Electrical Services INC	Los Osos	C-10	Expires Mar 31, 2027	973698
A & A Air Conditioning Heating & Sheet Metal	Grass Valley	C-10, C-20, C-36, C-43	Expires Jun 30, 2027	310626
A A A Electric & Elevator INC	Fontana	C-10, C-11	Expires Sep 30, 2028	644422
A A C Construction INC	Tulare	B, C-10, C-20, C-33, C-36, D-21, D-41	Expires Mar 31, 2027	930238
A A Electric	Hayward	C-10	Expires Apr 30, 2028	1090561
A Cool Air INC	Sacramento	C-10, C-20	Expires Mar 31, 2027	893319
A Lighting INC	Sylmar	C-10	Expires Sep 30, 2028	936468
A P Builders	Lotus	B, C-10	Expires Oct 31, 2028	886545
A W S Electrical Services	Sun Valley	C-10	Expires Jul 31, 2028	901196
A1 Power Group INC	Granada Hills	C-10	Expires Apr 30, 2027	1052803
Ab&a Fire Protection	Pacoima	C-10, C-16	Expires May 31, 2028	972885
Abc Service	Menlo Park	C-10, C-20, C-36	Expires May 31, 2028	1091355
Access Electric	Modesto	C-10	Expires Feb 29, 2028	667801
Accord Electrical Corporation	West Hills	B, C-10	Expires Apr 30, 2027	1002992
Acme Services INC	Bakersfield	B, C-7, C-10	Expires Sep 30, 2027	740652
Acs Builders	Chino	B, C-10, C-20, C-38	Expires Nov 30, 2027	1083415
Acustruct	Concord	A, B, C-10, C-50	Expires Nov 30, 2028	815096
Adams Electric	Pacific Grove	C-10	Expires Jun 30, 2028	840093
Advantage Total Protection INC	Walnut Grove	A, B, C-7, C-10	Expires May 31, 2028	947155
Affirm Electric INC	Santa Ana	C-10	Expires Sep 30, 2028	1043969
Air - Con Mechanical Services INC	Walnut Creek	C-10, C-20, C-36	Expires Jul 31, 2028	636428
Ajp General Construction	San Pablo	B, C-10	Expires Mar 31, 2027	1102328
Albion Power Company INC	San Francisco	B, C-10, C-46	Expires May 31, 2028	878027

Show all 24 →California contractor directory All five classifications

Common question

What work does a C-10 cover?

Electrical wiring, panels, fixtures, and the equipment that moves or uses electrical power, including battery storage and photovoltaic solar when that work is electrical. The binding description is the CSLB classification, not this summary.