Best Licensed Plumbers in Redwood City, CA
45 plumbing companies registered in Redwood City 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; 46 registered in Redwood City
- 30 of Redwood City's 46 licenses (65.2%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Redwood City: 8 years
- Longest Redwood City licensure: since 1959
- 35 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1959
- Phone
- (650) 366-5393
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (650) 508-0522
- Verified
- August 17, 2026
- Licensed since
- 1991
- Phone
- (650) 363-8053
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (650) 207-5799
- Verified
- August 17, 2026
- Licensed since
- 1993
- Phone
- (650) 938-4519
- Verified
- August 17, 2026
- Licensed since
- 2000
- Phone
- (415) 264-6092
- Verified
- August 17, 2026
- Licensed since
- 2005
- Phone
- (650) 366-4675
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (650) 222-5497
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| John A Boudreau Plumbing And Heating Inc. | #182224 | On file | 1959 |
| Bay Area Plumbing & Heating | #584345 | On file | 1990 |
| Advance Systems And Design | #626704 | On file | 1991 |
| Mike Spillane General Eng. & Plumbing Contractor | #651043 | On file | 1992 |
| Patrick Powers Plumbing & Remodeling | #675461 | On file | 1993 |
| A Barrios General Building Contractor Painting & Decorating | #785178 | On file | 2000 |
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, 46 of them registered in Redwood City. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Redwood City license has been held 8 years, and the longest-standing one dates to 1959. 30 of Redwood City's 46 licenses (65.2%) 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 Redwood City: common questions
How many licensed plumbers are there in Redwood City?
46 active C-36 plumbing licenses are registered in Redwood City, out of 426 across San Mateo County. 45 Redwood City-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. 46 active C-36 plumbing licenses are registered in Redwood City and 426 across San Mateo County, the longest-standing issued in 1959. 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 30 of Redwood City's 46 currently carry. 35 San Mateo County licenses expire within 90 days.