Best Licensed Plumbers in Millbrae, CA
21 plumbing companies registered in Millbrae 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; 24 registered in Millbrae
- 16 of Millbrae's 24 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 Millbrae: 18 years
- Longest Millbrae licensure: since 1968
- 35 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1979
- Phone
- (415) 608-0663
- Verified
- August 17, 2026
- Licensed since
- 1993
- Phone
- (650) 583-3821
- Verified
- August 17, 2026
- Licensed since
- 1998
- Phone
- (415) 279-2878
- Verified
- August 17, 2026
- Licensed since
- 1998
- Phone
- (415) 730-0348
- Verified
- August 17, 2026
- Licensed since
- 2000
- Phone
- (415) 317-9398
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (650) 302-8625
- Verified
- August 17, 2026
- Licensed since
- 2007
- Phone
- (415) 812-3789
- Verified
- August 17, 2026
- Licensed since
- 2007
- Phone
- (415) 846-1353
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Seiko Construction Inc. | #374334 | On file | 1979 |
| Kong's Plumbing And Construction Co | #671225 | On file | 1993 |
| T T Lee Corp DBA Allen Lee Plumbing | #751710 | On file | 1998 |
| P O P Plumbing Inc. | #756097 | On file | 1998 |
| C & C General Engineering Inc. | #784535 | On file | 2000 |
| Arthulia Inc. | #833099 | On file | 2004 |
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, 24 of them registered in Millbrae. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Millbrae license has been held 18 years, and the longest-standing one dates to 1968. 16 of Millbrae's 24 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: 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 Millbrae: common questions
How many licensed plumbers are there in Millbrae?
24 active C-36 plumbing licenses are registered in Millbrae, out of 426 across San Mateo County. 21 Millbrae-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. 24 active C-36 plumbing licenses are registered in Millbrae and 426 across San Mateo County, the longest-standing issued in 1968. 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 16 of Millbrae's 24 currently carry. 35 San Mateo County licenses expire within 90 days.