Best Licensed Electricians in Petaluma, CA
97 electrical contractors registered in Petaluma 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.
- 551 active C-10 electrical licenses in Sonoma County; 98 registered in Petaluma
- 50 of Petaluma's 98 licenses (51.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Petaluma: 19 years
- Longest Petaluma licensure: since 1963
- 50 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1963
- Expires
- 2028-01-31
- Phone
- (707) 579-3511
- Verified
- August 17, 2026
- Licensed since
- 1966
- Expires
- 2028-08-31
- Phone
- (707) 762-4028
- Verified
- August 17, 2026
- Licensed since
- 1970
- Expires
- 2026-10-31
- Phone
- (707) 778-3500
- Verified
- August 17, 2026
- Licensed since
- 1977
- Expires
- 2027-02-28
- Phone
- (415) 847-1990
- Verified
- August 17, 2026
- Licensed since
- 1982
- Expires
- 2027-03-31
- Phone
- (707) 762-6714
- Verified
- August 17, 2026
- Licensed since
- 1985
- Expires
- 2026-09-30
- Phone
- (707) 778-0170
- Verified
- August 17, 2026
- Licensed since
- 1986
- Expires
- 2028-06-30
- Phone
- (415) 456-2906
- Verified
- August 17, 2026
- Licensed since
- 1987
- Expires
- 2027-11-30
- Phone
- (510) 928-2423
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Ernest Ongaro & Sons Inc. DBA Ongaro & Sons | #215233 | On file | 1963 |
| Oasis Pump & Drilling | #242168 | On file | 1966 |
| Kozy Homes | #262090 | On file | 1970 |
| Robert W Von Ahn Plumbing & Electrical Contractor | #334286 | On file | 1977 |
| O F D Electric Inc. | #421881 | On file | 1982 |
| Slembrouck/many Corporation | #467598 | On file | 1985 |
Sonoma County electrical licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 551 active C-10 electrical licenses in Sonoma County, 98 of them registered in Petaluma. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Petaluma license has been held 19 years, and the longest-standing one dates to 1963. 50 of Petaluma's 98 licenses (51.0%) 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: 550 of the county's 551 licenses carry the same $25,000 bond California sets by statute. 50 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 Petaluma: common questions
How many licensed electricians are there in Petaluma?
98 active C-10 electrical licenses are registered in Petaluma, out of 551 across Sonoma County. 97 Petaluma-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. 98 active C-10 electrical licenses are registered in Petaluma and 551 across Sonoma County, the longest-standing issued in 1963. 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 50 of Petaluma's 98 currently carry. 50 Sonoma County licenses expire within 90 days.