How to get a Plumbing license in California
The full California plumbing licensing path — experience hours, required exam, fees, and where to apply. Verified 5/26/2026.
Career prep, not a license.
Prep for the California Plumbing exam
Plumbing 101 — Start Here (Free) — self-paced lessons, practice exam, certificate of completion.
C-36 Plumbing Contractor License
Frequently asked questions
How do I get a plumbing license in California?
You need 4 years (8,000 hours) journey-level plumbing experience within the last 10 years. Then pass the Law & Business Exam + C-36 Trade Exam administered by PSI Services. Applications go through the California Contractors State License Board (CSLB).
What exam do I need to pass?
Law & Business Exam + C-36 Trade Exam — administered by PSI Services.
How much experience do I need?
4 years (8,000 hours) journey-level plumbing experience within the last 10 years
What about fees, insurance, and continuing education?
Application fee: $450. Initial license fee: $200. $25,000 contractor bond required. Trade exam covers UPC, fixtures, DWV, gas, medical gas. No state-level CE requirement for renewal. Renewal every 2 years ($450).
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