A refrigeration contractor constructs, fabricates, erects, installs, maintains, services and
repairs refrigerators, refrigerated rooms, and insulated refrigerated spaces, temperature
insulation, air-conditioning units, ducts, blowers, registers, humidity and thermostatic
controls for the control of air, liquid and/or gas temperatures below fifty degrees
Fahrenheit (50º), or ten degrees Celsius (10º).

Learn more about the C38 Refrigeration Contractor License

A roofing contractor installs products and repairs surfaces that seal, waterproof and
weatherproof structures. This work is performed to prevent water or its derivatives,
compounds or solids from penetrating such protection and gaining access to material
or space beyond. In the course of this work, the contractor examines and/or prepares
surfaces and uses the following material: asphaltum, pitch, tar, felt, glass fabric, urethane
foam, metal roofing systems, flax, shakes, shingles, roof tile, slate or any other roofing,
waterproofing or membrane material(s) or a combination thereof.

Learn more about the C39 Roofing Contractor License

A sanitation system contractor fabricates and installs cesspools, septic tanks, storm
drains, and other sewage disposal and drain structures. This classification includes
the laying of cast iron, steel, concrete, vitreous and non-vitreous pipe and any other
hardware associated with these systems.

Learn more about the C42 Sanitation Contractor License

A sheet metal contractor selects, cuts, shapes, fabricates and installs sheet metal such
as cornices, flashings, gutters, leaders, pans, kitchen equipment, duct work (including
insulation, patented chimneys, metal flues, metal roofing systems and any other
installations requiring sheet metal).

Learn more about the C43 Sheet Metal Contractor License

A sign contractor fabricates, installs, and erects electrical signs, including the wiring of
such electrical signs, and non-electrical signs, including but not limited to: post or pole
supported signs, signs attached to structures, painted wall signs, and modifications to
existing signs.

Learn more about the C45 Signs Contractor License

A solar contractor installs, modifies, maintains, and repairs thermal and photovoltaic
solar energy systems. A licensee classified in this section shall not undertake or perform
building or construction trades, crafts, or skills, except when required to install a thermal
or photovoltaic solar energy system.

Learn more about the C46 Solar Contractor License

A general manufactured housing contractor installs, alters, repairs, or prepares for
moving any type of manufactured home as defined in Section 18007 of the Health
and Safety Code, any type of mobile home as defined in Section 18008 of the Health
and Safety Code, and any type of multifamily manufactured home as defined in
Section 18008.7 of the Health and Safety Code, including the accessory buildings
or structures, and the foundations. A manufactured home does not include any
recreational vehicle, commercial coach, or factory-built housing as defined in Section
19971 of the Health and Safety Code.

Learn more about the C47 General Manufactured Housing Contractor License

A reinforcing steel contractor fabricates, places and ties steel mesh or steel reinforcing
bars (rods), of any profile, perimeter, or cross-section that are or may be used to
reinforce concrete structures.

Learn more about the C50 Reinforcing Steel Contractor License

A structural steel contractor fabricates and erects structural steel shapes and plates, of
any profile, perimeter or cross-section that are or may be used as structural members
for buildings and structures, including the riveting, welding, rigging, and metal roofing
systems necessary to perform this work.

Learn more about the C51 Structural Steel Contractor License

A swimming pool contractor constructs swimming pools, spas or hot tubs, including
installation of solar heating equipment using those trades or skills necessary for such
construction.

Learn more about the C53 Swimming Pool Contractor License