Best Licensed Plumbers in Copperopolis, CA
4 plumbing companies registered in Copperopolis hold current CSLB licenses, verified against official records as of August 17, 2026. All 4 are listed below, ordered by workers' compensation cover and years licensed.
- 42 active C-36 plumbing licenses in Calaveras County; 5 registered in Copperopolis
- 1 of Copperopolis's 5 licenses (20.0%) carries current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Copperopolis: 27 years
- Longest Copperopolis licensure: since 1992
- 2 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 2020
- Phone
- (209) 813-5673
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (925) 354-1470
- Verified
- August 17, 2026
- Licensed since
- 1995
- Phone
- (510) 621-8237
- Verified
- August 17, 2026
- Licensed since
- 1999
- Phone
- (831) 818-0519
Compare the top 4 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Contreras Plumbing A Partnership | #1065444 | Exempt or none on file | 2020 |
| Big 'c' Construction | #657557 | Exempt or none on file | 1992 |
| Canyon Plumbing Company | #703165 | Exempt or none on file | 1995 |
| 49er Rooter And Drain Service Inc. | #764163 | Exempt or none on file | 1999 |
Calaveras County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 42 active C-36 plumbing licenses in Calaveras County, 5 of them registered in Copperopolis. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Copperopolis license has been held 27 years, and the longest-standing one dates to 1992. 1 of Copperopolis's 5 licenses (20.0%) carries 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: 42 of the county's 42 licenses carry the same $25,000 bond California sets by statute. 2 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 Copperopolis: common questions
How many licensed plumbers are there in Copperopolis?
5 active C-36 plumbing licenses are registered in Copperopolis, out of 42 across Calaveras County. 4 Copperopolis-registered companies passed our license verification, and all 4 are listed on this page. 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. 5 active C-36 plumbing licenses are registered in Copperopolis and 42 across Calaveras 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 1 of Copperopolis's 5 currently carry. 2 Calaveras County licenses expire within 90 days.