Best Licensed Electricians in Guerneville, CA
7 electrical contractors registered in Guerneville hold current CSLB licenses, verified against official records as of August 17, 2026. All 7 are listed below, ordered by workers' compensation cover and years licensed.
- 551 active C-10 electrical licenses in Sonoma County; 7 registered in Guerneville
- 2 of Guerneville's 7 licenses (28.6%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Guerneville: 24 years
- Longest Guerneville licensure: since 1984
- 50 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2002
- Expires
- 2028-06-30
- Phone
- (707) 799-0402
- Verified
- August 17, 2026
- Licensed since
- 2022
- Expires
- 2028-07-31
- Phone
- (650) 201-5884
- Verified
- August 17, 2026
- Licensed since
- 1984
- Expires
- 2026-11-30
- Phone
- (707) 484-5777
- Verified
- August 17, 2026
- Licensed since
- 1989
- Expires
- 2027-01-31
- Phone
- (707) 480-5231
- Verified
- August 17, 2026
- Licensed since
- 1993
- Expires
- 2027-01-31
- Phone
- (415) 368-1608
- Verified
- August 17, 2026
- Licensed since
- 2005
- Expires
- 2027-11-30
- Phone
- (415) 244-5811
7.Calstroy
- Verified
- August 17, 2026
- Licensed since
- 2009
- Expires
- 2027-06-30
- Phone
- (415) 250-3215
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Steve's Electric | #809424 | On file | 2002 |
| Wirewolf Inc. | #1094523 | On file | 2022 |
| Humes Electrical Construction | #465190 | Exempt or none on file | 1984 |
| Jerry Zerah Construction | #553419 | Expired on file | 1989 |
| Mario Monterrosa Electric Inc. | #670700 | Exempt or none on file | 1993 |
| Eccles Electrical | #867963 | Exempt or none on file | 2005 |
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, 7 of them registered in Guerneville. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Guerneville license has been held 24 years, and the longest-standing one dates to 1984. 2 of Guerneville's 7 licenses (28.6%) 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 Guerneville: common questions
How many licensed electricians are there in Guerneville?
7 active C-10 electrical licenses are registered in Guerneville, out of 551 across Sonoma County. 7 Guerneville-registered companies passed our license verification, and all 7 are listed on this page. 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. 7 active C-10 electrical licenses are registered in Guerneville and 551 across Sonoma County, the longest-standing issued in 1984. 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 2 of Guerneville's 7 currently carry. 50 Sonoma County licenses expire within 90 days.