State · CA
California trade licensing
California CSLB publishes excellent bulk contractor licensing data. Apprenticeship data from California DAS is only available through ASP scraping; all records are flagged as scraped, not authoritative, in the UI.
Primary regulator
California Department of Industrial Relations
www.dir.ca.gov1-844-522-6734
Licensing boards by trade
Pick a trade in California
Aircraft Mechanic (A&P)
Services and inspects airframes and powerplants on aircraft: general aviation, airline, military.
Auto Body Technician
Repairs collision damage: panel replacement, frame straightening, refinishing.
Automotive Service Technician
Diagnoses, maintains, and repairs cars and light trucks: gasoline, diesel, and electric.
Boilermaker
Builds, installs, and repairs boilers, pressure vessels, and large tanks.
Carpenter
Frames, finishes, and builds structures from wood, steel, and composite materials.
[ ADJACENT ]
Diesel Mechanic
Services and repairs diesel engines in trucks, buses, and heavy equipment.
Electrician
Installs and maintains electrical systems in homes, commercial buildings, and industrial sites.
[ STATE LICENSE ]
Elevator Constructor
Installs, modernizes, and services elevators, escalators, and moving walkways.
[ STATE LICENSE ]
Glazier
Cuts, installs, and replaces glass in windows, storefronts, curtain walls, and skylights.
Heavy Equipment Mechanic
Services construction, mining, agricultural, and material-handling machinery.
HVAC Technician
Installs, maintains, and repairs heating, ventilation, air conditioning, and refrigeration systems.
[ STATE LICENSE ]
Industrial Maintenance Technician
Keeps manufacturing equipment running: mechanical, electrical, and control system upkeep.
Ironworker
Erects structural steel, reinforces concrete with rebar, and installs metal decking and ornamental iron.
[ ADJACENT ]
Machinist
Makes precision metal parts using manual and CNC machine tools.
Mason
Lays brick, block, and stone for walls, foundations, chimneys, and veneers.
[ ADJACENT ]
Millwright
Installs, aligns, dismantles, and repairs heavy industrial machinery.
Operating Engineer
Operates heavy construction equipment: cranes, excavators, dozers, graders, loaders.
Plumber
Installs and repairs water, waste, gas, and drainage systems in buildings.
[ STATE LICENSE ]
Sheet Metal Worker
Fabricates and installs ductwork, roofing, cladding, and architectural sheet metal.
Welder
Joins and cuts metal using arc, MIG, TIG, stick, and oxy-fuel processes.
[ STATE LICENSE ]