Best Licensed Plumbers in San Dimas, CA
22 plumbing companies registered in San Dimas 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; 22 registered in San Dimas
- 13 of San Dimas's 22 licenses (59.1%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in San Dimas: 20 years
- Longest San Dimas licensure: since 1980
- 375 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1988
- Phone
- (909) 971-8440
- Verified
- August 17, 2026
- Licensed since
- 1988
- Phone
- (909) 592-8487
- Verified
- August 17, 2026
- Licensed since
- 1991
- Phone
- (626) 905-1254
- Verified
- August 17, 2026
- Licensed since
- 1996
- Phone
- (626) 705-4451
- Verified
- August 17, 2026
- Licensed since
- 1997
- Phone
- (909) 394-9545
- Verified
- August 17, 2026
- Licensed since
- 2005
- Phone
- (909) 241-9919
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (818) 261-4362
- Verified
- August 17, 2026
- Licensed since
- 2019
- Phone
- (855) 650-7867
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Athena Engineering Inc. | #523044 | On file | 1988 |
| Jb Plumbing | #550584 | On file | 1988 |
| S K Construction | #633705 | On file | 1991 |
| Mpi - Miller Plumbing Inc. | #720581 | On file | 1996 |
| J B Kitchens Baths & Design Inc. | #730976 | On file | 1997 |
| Lou's Plumbing Inc. | #854291 | On file | 2005 |
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, 22 of them registered in San Dimas. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median San Dimas license has been held 20 years, and the longest-standing one dates to 1980. 13 of San Dimas's 22 licenses (59.1%) 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 San Dimas: common questions
How many licensed plumbers are there in San Dimas?
22 active C-36 plumbing licenses are registered in San Dimas, out of 4,272 across Los Angeles County. 22 San Dimas-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. 22 active C-36 plumbing licenses are registered in San Dimas and 4,272 across Los Angeles 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 13 of San Dimas's 22 currently carry. 375 Los Angeles County licenses expire within 90 days.