Best Licensed Plumbers in El Cerrito, CA
12 plumbing companies registered in El Cerrito 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.
- 484 active C-36 plumbing licenses in Contra Costa County; 13 registered in El Cerrito
- 6 of El Cerrito's 13 licenses (46.2%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in El Cerrito: 26 years
- Longest El Cerrito licensure: since 1956
- 37 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1956
- Phone
- (510) 233-3511
- Verified
- August 17, 2026
- Licensed since
- 1979
- Phone
- (510) 525-1237
- Verified
- August 17, 2026
- Licensed since
- 1987
- Phone
- (510) 812-8292
- Verified
- August 17, 2026
- Licensed since
- 1999
- Phone
- (510) 848-3030
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (510) 508-4466
- Verified
- August 17, 2026
- Licensed since
- 2013
- Phone
- (510) 290-2785
- Verified
- August 17, 2026
- Licensed since
- 1988
- Phone
- (510) 375-7000
- Verified
- August 17, 2026
- Licensed since
- 1999
- Phone
- (510) 524-8938
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Olivero Plumbing Company Inc. | #162170 | On file | 1956 |
| Phillips Plumbing | #376637 | Exempt or none on file | 1979 |
| National Construction Company Inc. | #517533 | On file | 1987 |
| Hassler Heating And Air Conditioning LLC | #770180 | On file | 1999 |
| Hot Watts Technology | #874035 | On file | 2006 |
| Mauro's Plumbing Inc. | #984478 | On file | 2013 |
Contra Costa County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 484 active C-36 plumbing licenses in Contra Costa County, 13 of them registered in El Cerrito. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median El Cerrito license has been held 26 years, and the longest-standing one dates to 1956. 6 of El Cerrito's 13 licenses (46.2%) 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: 484 of the county's 484 licenses carry the same $25,000 bond California sets by statute. 37 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 El Cerrito: common questions
How many licensed plumbers are there in El Cerrito?
13 active C-36 plumbing licenses are registered in El Cerrito, out of 484 across Contra Costa County. 12 El Cerrito-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. 13 active C-36 plumbing licenses are registered in El Cerrito and 484 across Contra Costa County, the longest-standing issued in 1956. 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 6 of El Cerrito's 13 currently carry. 37 Contra Costa County licenses expire within 90 days.