Best Licensed Plumbers in Lafayette, CA
15 plumbing companies registered in Lafayette 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; 16 registered in Lafayette
- 8 of Lafayette's 16 licenses (50.0%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Lafayette: 20 years
- Longest Lafayette licensure: since 1972
- 37 county licenses reach their expiration date within 90 days
We earn a fee when you call businesses through numbers on this site. This never affects who is listed or how they rank.
- Verified
- August 17, 2026
- Licensed since
- 1978
- Phone
- (415) 694-9963
- Verified
- August 17, 2026
- Licensed since
- 1988
- Phone
- (925) 415-6090
- Verified
- August 17, 2026
- Licensed since
- 1996
- Phone
- (925) 932-0689
- Verified
- August 17, 2026
- Licensed since
- 2004
- Phone
- (925) 695-0016
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (925) 820-2090
- Verified
- August 17, 2026
- Licensed since
- 2006
- Phone
- (925) 284-3695
- Verified
- August 17, 2026
- Licensed since
- 2014
- Phone
- (415) 828-0135
- Verified
- August 17, 2026
- Licensed since
- 2015
- Phone
- (925) 383-3365
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| R F Clark Of San Francisco | #354264 | On file | 1978 |
| Aria Construction Enterprise Inc. DBA Uv Electric Company | #545230 | On file | 1988 |
| Troels Thorenfeldt Construction Company | #729804 | Exempt or none on file | 1996 |
| Full Steam Ahead Construction & Plumbing | #841224 | On file | 2004 |
| Marcus J Madrid Inc. DBA Guaranteed Plumbing | #875614 | On file | 2006 |
| R J D Mechanical And Construction Inc. DBA All Green Systems Go | #878503 | 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, 16 of them registered in Lafayette. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Lafayette license has been held 20 years, and the longest-standing one dates to 1972. 8 of Lafayette's 16 licenses (50.0%) 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 Lafayette: common questions
How many licensed plumbers are there in Lafayette?
16 active C-36 plumbing licenses are registered in Lafayette, out of 484 across Contra Costa County. 15 Lafayette-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. 16 active C-36 plumbing licenses are registered in Lafayette and 484 across Contra Costa County, the longest-standing issued in 1972. 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 8 of Lafayette's 16 currently carry. 37 Contra Costa County licenses expire within 90 days.