Best Licensed Plumbers in San Carlos, CA
22 plumbing companies registered in San Carlos 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.
- 426 active C-36 plumbing licenses in San Mateo County; 22 registered in San Carlos
- 14 of San Carlos's 22 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 San Carlos: 23 years
- Longest San Carlos licensure: since 1977
- 35 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1984
- Phone
- (650) 654-2630
- Verified
- August 17, 2026
- Licensed since
- 1986
- Phone
- (650) 592-0472
- Verified
- August 17, 2026
- Licensed since
- 1988
- Phone
- (650) 598-9108
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (650) 369-0697
- Verified
- August 17, 2026
- Licensed since
- 1991
- Phone
- (650) 363-9109
- Verified
- August 17, 2026
- Licensed since
- 1999
- Phone
- (650) 551-1200
- Verified
- August 17, 2026
- Licensed since
- 2002
- Phone
- (650) 595-4050
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (650) 753-1000
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Service Unlimited Inc. | #456636 | On file | 1984 |
| Egan Plumbing Inc. | #484784 | On file | 1986 |
| Cal-west Plumbing | #529444 | On file | 1988 |
| Pacific Plumbing | #587293 | On file | 1990 |
| Regina Plumbing Inc. | #615954 | On file | 1991 |
| Dli Mechanical | #765695 | On file | 1999 |
San Mateo County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 426 active C-36 plumbing licenses in San Mateo County, 22 of them registered in San Carlos. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Carlos license has been held 23 years, and the longest-standing one dates to 1977. 14 of San Carlos's 22 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: 426 of the county's 426 licenses carry the same $25,000 bond California sets by statute. 35 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 Carlos: common questions
How many licensed plumbers are there in San Carlos?
22 active C-36 plumbing licenses are registered in San Carlos, out of 426 across San Mateo County. 22 San Carlos-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. 22 active C-36 plumbing licenses are registered in San Carlos and 426 across San Mateo County, the longest-standing issued in 1977. 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 14 of San Carlos's 22 currently carry. 35 San Mateo County licenses expire within 90 days.