In California, plumbers must hold a valid license issued by the Contractors State Licensing Board (CSLB) under the Department of Consumer Affairs to perform plumbing work legally. There are various types of plumbing licenses, including Journeyman Plumber (C-36) for supervised work, Plumbing Contractor (C-36) for independent work, and Limited Specialty Plumbing Contractor (C-42) for specialized tasks like water heater installation. Requirements typically involve a combination of work experience, education, and passing a written exam. It's crucial to ensure compliance with regulations set by the CSLB, which operates under the Department of Consumer Affairs Contractors State License Board. Additionally, plumbers may need additional permits or certifications for specific types of work, such as gas line installation or backflow prevention. Consulting the CSLB or local building authorities is recommended to stay informed about the latest licensing requirements in California, including Master Plumber licenses. At Rooter Solutions, we stay current on all information regarding plumbing contractor licenses. This allows us to prove our years of experience in an educational setting and ensure your residential and commercial properties are safe while following all plumbing-related building codes.