Best Licensed Plumbers in Richmond, CA
33 plumbing companies registered in Richmond 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; 38 registered in Richmond
- 18 of Richmond's 38 licenses (47.4%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Richmond: 8 years
- Longest Richmond licensure: since 1960
- 37 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1960
- Phone
- (510) 232-5593
- Verified
- August 17, 2026
- Licensed since
- 1977
- Phone
- (510) 237-5080
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (510) 233-7000
- Verified
- August 17, 2026
- Licensed since
- 1995
- Phone
- (510) 237-7077
- Verified
- August 17, 2026
- Licensed since
- 1997
- Phone
- (510) 222-2282
- Verified
- August 17, 2026
- Licensed since
- 2002
- Phone
- (510) 222-7608
- Verified
- August 17, 2026
- Licensed since
- 2007
- Phone
- (415) 823-5525
- Verified
- August 17, 2026
- Licensed since
- 2011
- Phone
- (510) 776-5319
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Val Betti Plumbing & Heating Inc. | #196928 | On file | 1960 |
| Honrath & Stacey Inc. | #338497 | On file | 1977 |
| Bay City Mechanical Service Inc. | #645126 | On file | 1992 |
| Allied Propane Transportation Inc. | #715561 | On file | 1995 |
| Reyes Plumbing | #743331 | On file | 1997 |
| Sewer And Drain Masters Corporation | #808055 | Exempt or none on file | 2002 |
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, 38 of them registered in Richmond. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Richmond license has been held 8 years, and the longest-standing one dates to 1960. 18 of Richmond's 38 licenses (47.4%) 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 Richmond: common questions
How many licensed plumbers are there in Richmond?
38 active C-36 plumbing licenses are registered in Richmond, out of 484 across Contra Costa County. 33 Richmond-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. 38 active C-36 plumbing licenses are registered in Richmond and 484 across Contra Costa County, the longest-standing issued in 1960. 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 18 of Richmond's 38 currently carry. 37 Contra Costa County licenses expire within 90 days.