Plumber Exam Prep / California
Plumber Exam — CA
Journeyman Plumber Exam in California
Complete breakdown of the journeyman plumber licensing process in California — code used, exam provider, and what to study.
Exam Details
- Licensing Body
- California Contractors State License Board (CSLB)
- Exam Provider
- PSI Exams
- Code Edition
- California Plumbing Code (based on UPC)
- Passing Score
- 70%
- Question Count
- 100
- Exam Fee
- $450
- Experience Required
- 4 years
Note: Always verify current requirements with California Contractors State License Board (CSLB).
How California Compares Nationally
- At $450, California's plumbing exam fee is among the highest in the country — the national median is about $65.
California Plumber License — What to Know
C-36 Plumbing Contractor license. California adopts the UPC with its own amendments (California Plumbing Code).
Key Code Sections to Master
The Uniform Plumbing Code (UPC) exam covers similar topics to the IPC but with different numbering. Focus on water supply pipe sizing (Table 6-4), drainage fixture units (Table 7-3), venting requirements (Chapter 9), and fixture installation requirements (Chapter 4). The UPC is generally considered stricter on venting requirements than the IPC.
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Practice for the California plumber exam
Use this state guide to understand the license requirements, then drill IPC and UPC practice in your browser with pipe-sizing tools. Web access and native app purchases are separate.
California Journeyman Plumber Exam — Frequently Asked Questions
How do I get my journeyman plumber license in California?
In California, the journeyman plumber license is issued by California Contractors State License Board (CSLB). The exam uses the California Plumbing Code (based on UPC) and is administered by PSI Exams. You need 4 years of experience. The exam fee is $450 and the passing score is 70%. C-36 Plumbing Contractor license. California adopts the UPC with its own amendments (California Plumbing Code).
What plumbing code is used in California?
California uses the California Plumbing Code (based on UPC) for its journeyman plumber exam. The exam has 100 questions with a passing score of 70%. The exam is administered by PSI Exams.
What is the difference between IPC and UPC on the plumber exam?
California uses the Uniform Plumbing Code (UPC). The UPC covers similar topics to the IPC but with different article numbering. Key tables: Table 6-4 (water supply) and Table 7-3 (drainage fixture units). The UPC is generally considered stricter on venting requirements than the IPC.
What is the best app to study for the California plumber exam?
VoltExam offers California journeyman plumber exam prep on the web with IPC/UPC practice questions, explanations, state guidance, and built-in pipe sizing tools. Native mobile apps are available separately for offline study.