Best Licensed Plumbers in Walnut Creek, CA
33 plumbing companies registered in Walnut Creek 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; 33 registered in Walnut Creek
- 14 of Walnut Creek's 33 licenses (42.4%) carry current workers' compensation cover, not liability insurance; a blank usually means an owner-operator with no employees
- Median time licensed in Walnut Creek: 17 years
- Longest Walnut Creek licensure: since 1975
- 37 county licenses reach their expiration date within 90 days
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- Verified
- August 17, 2026
- Licensed since
- 1976
- Phone
- (925) 525-9055
- Verified
- August 17, 2026
- Licensed since
- 1987
- Phone
- (925) 212-3470
- Verified
- August 17, 2026
- Licensed since
- 1992
- Phone
- (925) 279-3330
- Verified
- August 17, 2026
- Licensed since
- 1995
- Phone
- (925) 212-3674
- Verified
- August 17, 2026
- Licensed since
- 1995
- Phone
- (925) 947-1237
- Verified
- August 17, 2026
- Licensed since
- 2001
- Phone
- (925) 356-2619
- Verified
- August 17, 2026
- Licensed since
- 2002
- Phone
- (925) 288-9223
- Verified
- August 17, 2026
- Licensed since
- 2007
- Phone
- (510) 219-0061
Compare the top 6 at a glance
| Company | License | Workers' comp | Licensed since |
|---|---|---|---|
| Hearthstone Building & Restoration | #319036 | On file | 1976 |
| Freeman's Heating Air Conditioning & Electrical Services | #519835 | On file | 1987 |
| Air - Con Mechanical Services Inc. | #636428 | On file | 1992 |
| Precision Plumbing | #709108 | On file | 1995 |
| Bds Plumbing Inc. | #713183 | On file | 1995 |
| A M A C Construction & Restoration | #796327 | On file | 2001 |
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, 33 of them registered in Walnut Creek. CSLB also publishes a real original issue date, which Washington's registry does not, so tenure is measurable here: the median Walnut Creek license has been held 17 years, and the longest-standing one dates to 1975. 14 of Walnut Creek's 33 licenses (42.4%) 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 Walnut Creek: common questions
How many licensed plumbers are there in Walnut Creek?
33 active C-36 plumbing licenses are registered in Walnut Creek, out of 484 across Contra Costa County. 33 Walnut Creek-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. 33 active C-36 plumbing licenses are registered in Walnut Creek and 484 across Contra Costa County, the longest-standing issued in 1975. 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 14 of Walnut Creek's 33 currently carry. 37 Contra Costa County licenses expire within 90 days.