Best Licensed Plumbers in Oakland, CA
115 plumbing companies registered in Oakland 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.
- 488 active C-36 plumbing licenses in Alameda County; 117 registered in Oakland
- 50 of Oakland's 117 licenses (42.7%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Oakland: 14 years
- Longest Oakland licensure: since 1975
- 43 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1975
- Phone
- (510) 910-1579
- Verified
- August 17, 2026
- Licensed since
- 1976
- Phone
- (510) 917-2206
- Verified
- August 17, 2026
- Licensed since
- 1978
- Phone
- (510) 532-1800
- Verified
- August 17, 2026
- Licensed since
- 1980
- Phone
- (510) 632-3173
- Verified
- August 17, 2026
- Licensed since
- 1982
- Phone
- (510) 652-4947
- Verified
- August 17, 2026
- Licensed since
- 1983
- Phone
- (510) 465-3449
- Verified
- August 17, 2026
- Licensed since
- 1986
- Phone
- (510) 593-3818
- Verified
- August 17, 2026
- Licensed since
- 1986
- Phone
- (510) 536-1068
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Eureka Valley Construction | #309876 | On file | 1975 |
| Albertson Plumbing | #317171 | On file | 1976 |
| East Bay Pump & Equipment Company Inc. | #362016 | On file | 1978 |
| Monterey And Mwh Constructors, A Joint Venture | #388361 | On file | 1980 |
| J Toscano Incorporated DBA Paul's Plumbing | #419974 | On file | 1982 |
| Mallard Plumbing | #443102 | On file | 1983 |
Alameda County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 488 active C-36 plumbing licenses in Alameda County, 117 of them registered in Oakland. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Oakland license has been held 14 years, and the longest-standing one dates to 1975. 50 of Oakland's 117 licenses (42.7%) 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: 488 of the county's 488 licenses carry the same $25,000 bond California sets by statute. 43 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 Oakland: common questions
How many licensed plumbers are there in Oakland?
117 active C-36 plumbing licenses are registered in Oakland, out of 488 across Alameda County. 115 Oakland-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. 117 active C-36 plumbing licenses are registered in Oakland and 488 across Alameda County, the longest-standing issued in 1975. 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 50 of Oakland's 117 currently carry. 43 Alameda County licenses expire within 90 days.