California plumber license requirements
7 facts reviewed by our editor against the official page. Passages marked “not yet reviewed” are copied word-for-word from official state pages (fetched 2026-10-17) and are pending human review — read them in context on the linked source.
| Item | Detail (with quote from the official source) |
|---|---|
| Licensing authority | Contractor license (C-36 Plumbing, CSLB) Contractors State License Board (CSLB), phone (800) 321-CSLB (2752). “or call (800) 321-CSLB (2752).” Official source · verified 2026-10-17 · What Kind of Contractor Do You Need? - CSLB |
| State/provincial license required? | Contractor license (C-36 Plumbing, CSLB) California CSLB contractor license (e.g. C-36 Plumbing) required for contract work valued at $1,000 or more (labor + materials), or work needing a building permit or using employees. “contracts for work valued at $1,000 or more for combined labor and materials costs must hold a current, valid license from CSLB” Official source · verified 2026-10-17 · What Kind of Contractor Do You Need? - CSLB |
| Experience / hours | Contractor license (C-36 Plumbing, CSLB) CSLB: the qualifier needs four years of journey-level experience within the last ten years. “The qualifier must have the required work experience (four years within the last ten years as a” Official source · verified 2026-10-17 · Apply for a Sole Owner license |
| Education & training | Contractor license (C-36 Plumbing, CSLB) CSLB: no educational requirement to apply for or act as qualifier. “There is no educational requirement to apply for or act as the qualifier on a license.” Official source · verified 2026-10-17 · Apply for a Sole Owner license |
| Exam | Contractor license (C-36 Plumbing, CSLB) CSLB: applicants must pass a trade exam and/or a business and law exam, given by an approved testing vendor (exam fees paid to the vendor). “After CSLB accepts the application, the qualifier will need to pass a trade exam and/or a business and law exam” Official source · verified 2026-10-17 · Apply for a Sole Owner license |
| Fees | Contractor license (C-36 Plumbing, CSLB) CSLB sole owner: $450 non-refundable application fee; $200 initial license fee after passing the exam. “Non-refundable application fee of $450 due as well as a” Official source · verified 2026-10-17 · Apply for a Sole Owner license |
| Renewal | Contractor license (C-36 Plumbing, CSLB) CSLB sole owner license renewal: $450 every two years. “Renewal fee of $450 for a sole owner license will be due every two years after licensure.” Official source · verified 2026-10-17 · Apply for a Sole Owner license |
Check a license in California
Search California license holders Data: California CSLB – License Master list (Data Portal)
Questions to ask the board
- Which license level matches my experience, and do hours from another jurisdiction count?
- Is the exam open-book, and which code edition is used?
- Do I also need a city or county license where I will work?
- Is there a reciprocity or endorsement agreement with my current jurisdiction?
Sources checked: www.cslb.ca.gov · www.cslb.ca.gov