Best Licensed Plumbers in Sierra Madre, CA
4 plumbing companies registered in Sierra Madre 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.
- 4,272 active C-36 plumbing licenses in Los Angeles County; 4 registered in Sierra Madre
- 1 of Sierra Madre's 4 licenses (25.0%) carries current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Sierra Madre: 27 years
- Longest Sierra Madre licensure: since 1949
- 375 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1949
- Phone
- (626) 355-3496
- Verified
- August 17, 2026
- Licensed since
- 1995
- Phone
- (626) 260-1810
- Verified
- August 17, 2026
- Licensed since
- 1998
- Phone
- (626) 827-0728
4.Sewertec
- Verified
- August 17, 2026
- Licensed since
- 2012
- Phone
- (626) 203-1493
Compare the top 4 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| G E M Plumbing Inc. | #111308 | On file | 1949 |
| Bickett Builders | #715867 | Exempt or none on file | 1995 |
| Delman Plumbing Inc. | #757484 | Exempt or none on file | 1998 |
| Sewertec | #971212 | Exempt or none on file | 2012 |
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, 4 of them registered in Sierra Madre. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Sierra Madre license has been held 27 years, and the longest-standing one dates to 1949. 1 of Sierra Madre's 4 licenses (25.0%) 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: 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 Sierra Madre: common questions
How many licensed plumbers are there in Sierra Madre?
4 active C-36 plumbing licenses are registered in Sierra Madre, out of 4,272 across Los Angeles County. 4 Sierra Madre-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. 4 active C-36 plumbing licenses are registered in Sierra Madre and 4,272 across Los Angeles County, the longest-standing issued in 1949. 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 Sierra Madre's 4 currently carry. 375 Los Angeles County licenses expire within 90 days.