Plumbing contractor (C-36) in Walnut Creek, CA

There are 3 Plumbing contractor (C-36) licenses with an address of record in Walnut Creek, CA, in the CSLB License Master data checked Oct 27, 2026. That is 0.1% of the 2,617 such licenses statewide; Walnut Creek ranks #259 of 514 CA cities for this license type. They are spread across 2 ZIP codes; the most common are 94595 (2), 94597 (1). Most list Contra Costa County. By business type: Corporation 3. The median first-issue year is 2016; the oldest license dates from 2015. 2 of them come up for renewal or expiration in the next 12 months, so re-check status before you sign a contract.

What a Plumbing contractor (C-36) license covers

Plumbing (C-36) covers systems that supply safe water and remove liquid and water-borne waste, including water heaters, fixtures, gas piping, drain lines and backflow devices.

How to verify a license

Enter the license number in CSLB Instant License Check and confirm the status is active, the classification matches the work, and the contractor has a current bond and workers' compensation coverage (or a valid exemption). California requires the license number on contracts and advertising. Official lookup: CSLB Instant License Check.

Plumbing contractor (C-36) licenses in Walnut Creek

Showing 3 of 3, A to Z. Listing order is alphabetical, not a recommendation.