Best Licensed Plumbers in San Anselmo, CA
6 plumbing companies registered in San Anselmo hold current CSLB licenses, verified against official records as of August 17, 2026. All 6 are listed below, ordered by workers' compensation cover and years licensed.
- 147 active C-36 plumbing licenses in Marin County; 6 registered in San Anselmo
- 4 of San Anselmo's 6 licenses (66.7%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in San Anselmo: 29 years
- Longest San Anselmo licensure: since 1983
- 14 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1985
- Phone
- (415) 453-1200
- Verified
- August 17, 2026
- Licensed since
- 1991
- Phone
- (415) 457-6941
- Verified
- August 17, 2026
- Licensed since
- 1997
- Phone
- (415) 457-0748
- Verified
- August 17, 2026
- Licensed since
- 2003
- Phone
- (415) 456-4554
- Verified
- August 17, 2026
- Licensed since
- 1983
- Phone
- (415) 456-4149
- Verified
- August 17, 2026
- Licensed since
- 2019
- Phone
- (415) 483-6801
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Strom Electric Inc. | #480976 | On file | 1985 |
| Wilson's Plumbing | #623217 | On file | 1991 |
| Grier Argall Plumbing Inc. | #736901 | On file | 1997 |
| Mason Plumbing Inc. | #817803 | On file | 2003 |
| Jbk Mechanical Inc. | #448914 | Exempt or none on file | 1983 |
| Ian Dunne Plumbing | #1048540 | Exempt or none on file | 2019 |
Marin County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 147 active C-36 plumbing licenses in Marin County, 6 of them registered in San Anselmo. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Anselmo license has been held 29 years, and the longest-standing one dates to 1983. 4 of San Anselmo's 6 licenses (66.7%) 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: 147 of the county's 147 licenses carry the same $25,000 bond California sets by statute. 14 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 San Anselmo: common questions
How many licensed plumbers are there in San Anselmo?
6 active C-36 plumbing licenses are registered in San Anselmo, out of 147 across Marin County. 6 San Anselmo-registered companies passed our license verification, and all 6 are listed on this page. 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. 6 active C-36 plumbing licenses are registered in San Anselmo and 147 across Marin County, the longest-standing issued in 1983. 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 4 of San Anselmo's 6 currently carry. 14 Marin County licenses expire within 90 days.