Best Licensed Plumbers in Berkeley, CA
24 plumbing companies registered in Berkeley 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; 24 registered in Berkeley
- 10 of Berkeley's 24 licenses (41.7%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Berkeley: 22 years
- Longest Berkeley licensure: since 1974
- 43 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1974
- Phone
- (510) 845-8200
- Verified
- August 17, 2026
- Licensed since
- 1981
- Phone
- (510) 644-0260
- Verified
- August 17, 2026
- Licensed since
- 1987
- Phone
- (510) 435-5900
- Verified
- August 17, 2026
- Licensed since
- 1993
- Phone
- (510) 548-6816
- Verified
- August 17, 2026
- Licensed since
- 2001
- Phone
- (510) 525-6132
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (510) 527-1219
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (510) 338-3225
- Verified
- August 17, 2026
- Licensed since
- 2016
- Phone
- (925) 386-0285
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Berkeley Plumbing & Heating Company Inc. | #293715 | On file | 1974 |
| L J Kruse Co | #405523 | On file | 1981 |
| A T M Construction | #522021 | On file | 1987 |
| American Leak Detection Of The East Bay | #663871 | On file | 1993 |
| Keene Builders Inc. | #794217 | On file | 2001 |
| A Better Rooter Plumbing & Engineering Inc. | #840183 | On file | 2004 |
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, 24 of them registered in Berkeley. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Berkeley license has been held 22 years, and the longest-standing one dates to 1974. 10 of Berkeley's 24 licenses (41.7%) 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 Berkeley: common questions
How many licensed plumbers are there in Berkeley?
24 active C-36 plumbing licenses are registered in Berkeley, out of 488 across Alameda County. 24 Berkeley-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 Berkeley and 488 across Alameda County, the longest-standing issued in 1974. 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 10 of Berkeley's 24 currently carry. 43 Alameda County licenses expire within 90 days.