Best Licensed Plumbers in Livermore, CA
58 plumbing companies registered in Livermore 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; 58 registered in Livermore
- 33 of Livermore's 58 licenses (56.9%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Livermore: 22 years
- Longest Livermore licensure: since 1980
- 43 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1980
- Phone
- (925) 449-4354
- Verified
- August 17, 2026
- Licensed since
- 1981
- Phone
- (925) 447-0292
- Verified
- August 17, 2026
- Licensed since
- 1981
- Phone
- (925) 443-3333
- Verified
- August 17, 2026
- Licensed since
- 1981
- Phone
- (510) 614-3500
- Verified
- August 17, 2026
- Licensed since
- 1987
- Phone
- (925) 454-8541
- Verified
- August 17, 2026
- Licensed since
- 1989
- Phone
- (925) 447-5220
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (925) 371-5671
- Verified
- August 17, 2026
- Licensed since
- 1990
- Phone
- (925) 606-4433
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| J D General Construction Inc. | #391749 | On file | 1980 |
| G S E Construction Company Inc. | #401498 | On file | 1981 |
| Pacific Rim Plumbing Inc. | #404372 | On file | 1981 |
| Marina Mechanical Services | #416198 | On file | 1981 |
| Brasso's Plumbing Inc. | #504789 | On file | 1987 |
| Tao Mechanical Ltd | #573397 | On file | 1989 |
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, 58 of them registered in Livermore. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Livermore license has been held 22 years, and the longest-standing one dates to 1980. 33 of Livermore's 58 licenses (56.9%) 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 Livermore: common questions
How many licensed plumbers are there in Livermore?
58 active C-36 plumbing licenses are registered in Livermore, out of 488 across Alameda County. 58 Livermore-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. 58 active C-36 plumbing licenses are registered in Livermore and 488 across Alameda County, the longest-standing issued in 1980. 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 33 of Livermore's 58 currently carry. 43 Alameda County licenses expire within 90 days.