Contra Costa Plumbing

Contra Costa Plumbing is a Clayton, California plumbing company holding CSLB license #303993, verified against state records, licensed since 1975.

License verification

License-Verified

CLEARCSLB #303993(C10|C36)
Original license date
1975-03-27
Expires
2026-09-30
Last verified 2026-08-17 · Verify at the state registry
Verification history
1. 2026-08-17 · checked against the state file · status: CLEAR

Contact

Phone: (925) 672-6533
Address: P O BOX 515, Clayton, CA 94517

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