Boiler, Hot Water Heating and Steam Fitting Contractor License in California

California does not license individual plumbers at the state level. Instead, the Contractors State License Board (CSLB) licenses plumbing contractors under the C-36 Plumbing Contractor classification. Individual journeyman and apprentice plumbers work under a licensed C-36 contractor. California's Division of Apprenticeship Standards (DAS) oversees plumbing apprenticeship programs, which typically last 5 years and include both on-the-job training and classroom instruction. California's massive construction market, driven by the state's housing shortage, creates high demand for plumbing professionals. Local jurisdictions may have additional licensing requirements.