Best Licensed Plumbers in West Covina, CA
33 plumbing companies registered in West Covina 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.
- 4,272 active C-36 plumbing licenses in Los Angeles County; 34 registered in West Covina
- 15 of West Covina's 34 licenses (44.1%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in West Covina: 15 years
- Longest West Covina licensure: since 1974
- 375 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1987
- Phone
- (626) 338-1181
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (626) 962-1122
- Verified
- August 17, 2026
- Licensed since
- 2001
- Phone
- (626) 917-9650
- Verified
- August 17, 2026
- Licensed since
- 2003
- Phone
- (626) 679-4949
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (951) 505-3143
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (323) 422-8414
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (626) 574-5665
- Verified
- August 17, 2026
- Licensed since
- 2008
- Phone
- (626) 393-3061
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Master Rooter Plumbing Service | #513577 | On file | 1987 |
| Solidway Construction Inc. | #657819 | On file | 1992 |
| Rosales Plumbing & Rooter | #802004 | On file | 2001 |
| Suncom Service | #829980 | On file | 2003 |
| B B S Construction Inc. | #839266 | On file | 2004 |
| Jjj Plumbing Inc. | #842875 | On file | 2004 |
Los Angeles County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 4,272 active C-36 plumbing licenses in Los Angeles County, 34 of them registered in West Covina. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median West Covina license has been held 15 years, and the longest-standing one dates to 1974. 15 of West Covina's 34 licenses (44.1%) 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: 4,270 of the county's 4,272 licenses carry the same $25,000 bond California sets by statute. 375 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 West Covina: common questions
How many licensed plumbers are there in West Covina?
34 active C-36 plumbing licenses are registered in West Covina, out of 4,272 across Los Angeles County. 33 West Covina-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. 34 active C-36 plumbing licenses are registered in West Covina and 4,272 across Los Angeles 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 15 of West Covina's 34 currently carry. 375 Los Angeles County licenses expire within 90 days.