Best Licensed Plumbers in Cotati, CA
11 plumbing companies registered in Cotati 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.
- 332 active C-36 plumbing licenses in Sonoma County; 11 registered in Cotati
- 7 of Cotati's 11 licenses (63.6%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Cotati: 17 years
- Longest Cotati licensure: since 1989
- 21 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1989
- Phone
- (707) 664-1042
- Verified
- August 17, 2026
- Licensed since
- 2000
- Phone
- (707) 795-9606
- Verified
- August 17, 2026
- Licensed since
- 2011
- Phone
- (707) 843-6560
- Verified
- August 17, 2026
- Licensed since
- 2015
- Phone
- (707) 520-3400
- Verified
- August 17, 2026
- Licensed since
- 2021
- Phone
- (707) 284-1039
- Verified
- August 17, 2026
- Licensed since
- 2024
- Phone
- (707) 285-3525
- Verified
- August 17, 2026
- Licensed since
- 2025
- Phone
- (707) 660-2675
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (707) 322-2646
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Trimyc Mechanical Inc. | #555597 | On file | 1989 |
| Westside Mechanical Incorporated | #773449 | On file | 2000 |
| Elite Plumbing Services | #960136 | On file | 2011 |
| Small Jobs Plumbing Inc. | #1002428 | On file | 2015 |
| Elevated Comfort Inc. | #1073860 | On file | 2021 |
| Mcphail Fuel Co Inc. | #1129205 | On file | 2024 |
Sonoma County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 332 active C-36 plumbing licenses in Sonoma County, 11 of them registered in Cotati. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Cotati license has been held 17 years, and the longest-standing one dates to 1989. 7 of Cotati's 11 licenses (63.6%) 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: 331 of the county's 332 licenses carry the same $25,000 bond California sets by statute. 21 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.
Plumbers in Cotati: common questions
How many licensed plumbers are there in Cotati?
11 active C-36 plumbing licenses are registered in Cotati, out of 332 across Sonoma County. 11 Cotati-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 plumbers?
Yes. California licenses contractors by classification, and C-36 is the CSLB classification that authorises this work. 11 active C-36 plumbing licenses are registered in Cotati and 332 across Sonoma County, the longest-standing issued in 1989. Only CLEAR, unexpired licenses appear here.
How do I check a plumber'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 7 of Cotati's 11 currently carry. 21 Sonoma County licenses expire within 90 days.