Bidroom has 20 plumber license records for Castro Valley, California (counted 2026-11-09). Of these, 15 are listed as active, 4 have an expired license on record, 19 show a bond on file, 19 show workers' comp on file. The most common license type is C36 (11).
Listings are populated from public state-license and BBB business records. To update or claim your profile, click any business above and use the “Claim this profile” button — it’s free and takes about 60 seconds.