Best Licensed Plumbers in Fremont, CA
27 plumbing companies registered in Fremont 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; 27 registered in Fremont
- 9 of Fremont's 27 licenses (33.3%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Fremont: 11 years
- Longest Fremont licensure: since 1992
- 43 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (510) 656-9192
- Verified
- August 17, 2026
- Licensed since
- 1994
- Phone
- (510) 656-6504
- Verified
- August 17, 2026
- Licensed since
- 1998
- Phone
- (408) 894-9120
- Verified
- August 17, 2026
- Licensed since
- 2002
- Phone
- (510) 364-8964
- Verified
- August 17, 2026
- Licensed since
- 2008
- Phone
- (510) 552-6209
- Verified
- August 17, 2026
- Licensed since
- 2008
- Phone
- (510) 943-2618
- Verified
- August 17, 2026
- Licensed since
- 2012
- Phone
- (408) 649-3129
- Verified
- August 17, 2026
- Licensed since
- 2018
- Phone
- (510) 396-8388
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Mills Mechanical | #654655 | On file | 1992 |
| Allstate Plumbing Co | #694771 | On file | 1994 |
| Pacific Plumbing & Underground Construction | #745976 | On file | 1998 |
| K C Wu Construction | #810425 | On file | 2002 |
| Joes Construction & Plumbing | #909698 | On file | 2008 |
| Precision Plumbing | #917303 | On file | 2008 |
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, 27 of them registered in Fremont. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Fremont license has been held 11 years, and the longest-standing one dates to 1992. 9 of Fremont's 27 licenses (33.3%) 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 Fremont: common questions
How many licensed plumbers are there in Fremont?
27 active C-36 plumbing licenses are registered in Fremont, out of 488 across Alameda County. 27 Fremont-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. 27 active C-36 plumbing licenses are registered in Fremont and 488 across Alameda County, the longest-standing issued in 1992. 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 9 of Fremont's 27 currently carry. 43 Alameda County licenses expire within 90 days.