CSLB classification · Electrical
C-10 Electrical Contractor
Installs, alters and repairs electrical systems. The second-largest licence class and a steady renewal stream for producers.
27,827
Active licences
13,441
With workers' comp
48%
3,281
Renewing in 90 days
413
Lapsed or suspended
13,965
Exempt
353
New in 90 days
Coverages a producer should expect
- ›Workers' comp
- ›General liability with completed operations
- ›Commercial auto
- ›Tools and equipment floater
- ›Cyber and E&O where controls or design are involved
Exposures underwriters ask about
- · Arc flash and electrocution
- · Completed-operations fire claims
- · Solar and EV installs shifting the class
WCIRB classes usually assigned
- 5190 Electrical wiring, within buildings
- 7538 Electric light or power line construction
Governing class depends on actual operations and payroll. Verify with the WCIRB classification search before quoting.
Carriers writing this class
Policies on file, statewide
- State Compensation Insurance Fund2,577
- Technology Insurance Co. Inc960
- Hartford Casualty Insurance Co.770
- Employers Preferred Insurance Co.609
- Insurance Co. Of The West569
- Security National Insurance Co.465
- Pie Insurance Co.453
- Wesco Insurance Co.325
- Norguard Insurance Co.319
- Travelers Property Casualty Co. Of America290
C-10 workers' comp renewals by month, California
638
Sep
1,501
Oct
872
Nov
814
Dec
1,596
Jan
1,041
Feb
1,150
Mar
1,144
Apr
1,055
May
1,124
Jun
1,047
Jul
702
Aug
66
Sep
Counties with the most
- Los Angeles County6,648
- Orange County2,434
- San Diego County2,068
- Riverside County1,887
- San Bernardino County1,363
- County1,174
- Santa Clara County1,092
- Sacramento County1,034
- Alameda County924
- Contra Costa County772
- Ventura County699
- Sonoma County574
Related classes in Electrical
Frequently asked
- What does a C-10 licence allow a contractor to do?
- Installs, alters and repairs electrical systems. The second-largest licence class and a steady renewal stream for producers.
- What insurance does a C-10 contractor need?
- Workers' compensation is required by law once they have employees; the CSLB suspends a licence without it. Beyond that, producers usually place: Workers' comp; General liability with completed operations; Commercial auto; Tools and equipment floater; Cyber and E&O where controls or design are involved.
- How many C-10 contractors are there in California?
- 27,827 active licences hold the C-10 classification as of 2026-09-06; 13,441 (48%) have workers' comp on file and 13,965 are exempt.
- When do C-10 workers' comp policies renew?
- 3,281 renew within 90 days. January is the peak month.
- Which WCIRB class codes apply to C-10 work?
- Most often 5190 (Electrical wiring, within buildings), 7538 (Electric light or power line construction). The WCIRB assigns the class from the actual operations and payroll, so verify per account in the WCIRB classification search.
Selling to C-10 contractors in California?
Birdray runs signal-timed outbound for one agency per territory: the companies behind these numbers, the person to email, and the renewal date, sent from your inbox. The database is free to search.
Sources: CSLB licence and workers' compensation records, California Secretary of State, OSHA, FMCSA, county permits. Aggregates only; no individual contractor appears on this page. "Active" means a CLEAR licence status. Renewal counts include policies on file with the CSLB expiring in the window. Refreshed weekly; this page as of 2026-09-06. Every field and its source →