Best Licensed Electricians in Ontario, CA
112 electrical contractors registered in Ontario hold current CSLB licenses, verified against official records as of August 17, 2026. The 8 below are the top-ranked, ordered by workers' compensation cover and years licensed.
- 1,281 active C-10 electrical licenses in San Bernardino County; 119 registered in Ontario
- 73 of Ontario's 119 licenses (61.3%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Ontario: 9 years
- Longest Ontario licensure: since 1961
- 106 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1961
- Expires
- 2027-06-30
- Phone
- (909) 983-1794
- Verified
- August 17, 2026
- Licensed since
- 1982
- Expires
- 2027-08-31
- Phone
- (909) 947-4601
- Verified
- August 17, 2026
- Licensed since
- 1987
- Expires
- 2027-07-31
- Phone
- (909) 983-7158
- Verified
- August 17, 2026
- Licensed since
- 1988
- Expires
- 2028-08-31
- Phone
- (909) 591-0990
- Verified
- August 17, 2026
- Licensed since
- 1989
- Expires
- 2027-09-30
- Phone
- (909) 391-2917
- Verified
- August 17, 2026
- Licensed since
- 1990
- Expires
- 2028-02-29
- Phone
- (909) 785-5075
- Verified
- August 17, 2026
- Licensed since
- 1991
- Expires
- 2027-08-31
- Phone
- (951) 905-7979
- Verified
- August 17, 2026
- Licensed since
- 1993
- Expires
- 2027-03-31
- Phone
- (909) 923-9373
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Gregg Electric Inc. | #201042 | On file | 1961 |
| Spec Construction Co Inc. | #419626 | On file | 1982 |
| Mike Walsh DBA A-c Power Systems | #514277 | On file | 1987 |
| Rdm Electric Co Inc. | #539194 | On file | 1988 |
| Chino Valley Refrigeration | #570810 | On file | 1989 |
| Inter-city Energy Systems Inc. | #587709 | On file | 1990 |
San Bernardino County electrical licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 1,281 active C-10 electrical licenses in San Bernardino County, 119 of them registered in Ontario. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Ontario license has been held 9 years, and the longest-standing one dates to 1961. 73 of Ontario's 119 licenses (61.3%) carry current workers' compensation cover in CSLB's file. That is employee injury cover, not liability insurance, and a blank usually means an owner-operator with no employees - lawful, and not a mark against anyone. The contractor bond is not a signal here: 1,280 of the county's 1,281 licenses carry the same $25,000 bond California sets by statute. 106 county licenses reach their expiration date within the next 90 days. CSLB cannot link straight to a license record, so every listing above shows its number for you to type into CSLB's license lookup. How we verify.
Electricians in Ontario: common questions
How many licensed electricians are there in Ontario?
119 active C-10 electrical licenses are registered in Ontario, out of 1,281 across San Bernardino County. 112 Ontario-registered companies passed our license verification, and the 8 on this page are the top-ranked of those. Only licenses CSLB shows as CLEAR and unexpired are listed.
Does California license electricians?
Yes. California licenses contractors by classification, and C-10 is the CSLB classification that authorises this work. 119 active C-10 electrical licenses are registered in Ontario and 1,281 across San Bernardino County, the longest-standing issued in 1961. Only CLEAR, unexpired licenses appear here.
How do I check an electrician's license in California?
Every listing above shows its CSLB license number. CSLB cannot link straight to a record, so open its license lookup and type the number in: it shows status, expiration, the contractor bond and workers' compensation cover, which 73 of Ontario's 119 currently carry. 106 San Bernardino County licenses expire within 90 days.