Best Licensed Plumbers in Brentwood, CA
36 plumbing companies registered in Brentwood 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.
- 484 active C-36 plumbing licenses in Contra Costa County; 37 registered in Brentwood
- 20 of Brentwood's 37 licenses (54.1%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Brentwood: 17 years
- Longest Brentwood licensure: since 1976
- 37 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1977
- Phone
- (510) 236-7100
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (925) 634-3800
- Verified
- August 17, 2026
- Licensed since
- 1994
- Phone
- (510) 359-8870
- Verified
- August 17, 2026
- Licensed since
- 1995
- Phone
- (925) 513-2373
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (925) 809-3460
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (925) 759-5761
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (925) 634-0272
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (925) 363-4965
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Kurt's Plumbing & Heating | #329497 | On file | 1977 |
| Brentwood Plumbing Inc. | #656324 | On file | 1992 |
| A To Z Plumbing & Heating Services Inc. | #683883 | On file | 1994 |
| Success Water Systems Inc. | #701671 | On file | 1995 |
| Ecowater Systems | #878009 | On file | 2006 |
| Elite Plumbing Inc. | #880532 | On file | 2006 |
Contra Costa County plumbing licensure at a glance
California licenses contractors by classification and CSLB publishes one on every record, so supply can be counted exactly: 484 active C-36 plumbing licenses in Contra Costa County, 37 of them registered in Brentwood. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Brentwood license has been held 17 years, and the longest-standing one dates to 1976. 20 of Brentwood's 37 licenses (54.1%) 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: 484 of the county's 484 licenses carry the same $25,000 bond California sets by statute. 37 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 Brentwood: common questions
How many licensed plumbers are there in Brentwood?
37 active C-36 plumbing licenses are registered in Brentwood, out of 484 across Contra Costa County. 36 Brentwood-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. 37 active C-36 plumbing licenses are registered in Brentwood and 484 across Contra Costa County, the longest-standing issued in 1976. 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 20 of Brentwood's 37 currently carry. 37 Contra Costa County licenses expire within 90 days.