Contractor License Details

A general engineering contractor is a contractor whose principal contracting business is in connection with fixed works requiring specialized engineering knowledge and skill, including the following divisions or subjects: irrigation, drainage, water power, water supply, flood control, inland waterways, harbors, docks and wharves, shipyards and ports, dams and hydroelectric projects, levees, river control and reclamation works, railroads, highways, streets and roads, tunnels, airports and airways, sewers and sewage disposal plants and systems, waste reduction plants, bridges, overpasses, underpasses and other similar works, pipelines and other systems for the transmission of petroleum and other liquid or gaseous substances, parks, playgrounds and other recreational works, refineries, chemical plants and similar industrial plants requiring specialized engineering knowledge and skill, powerhouses, power plants and other utility plants and installations, mines and metallurgical plants, land leveling and earthmoving projects, excavating, grading, trenching, paving and surfacing work and cement and concrete works in connection with the above mentioned fixed works.

A general building contractor is a contractor whose principal contracting business is in connection with any structure built, being built, or to be built, for the support, shelter, and enclosure of persons, animals, chattels, or movable property of any kind, requiring in its construction the use of at least two unrelated building trades or crafts, or to do or manage the whole or any part thereof.

A concrete contractor forms, pours, places, finishes, and installs specified mass, pavement, and other concrete work; and places and sets screeds for pavements or flatwork.

A warm air heating, ventilating and air-conditioning contractor fabricates, installs, maintains, services and repairs warm-air heating systems and water heating heat pumps, complete with warm-air appliances; ventilating systems complete with blowers and plenum chambers; air-conditioning systems complete with air conditioning unit; and the ducts, registers, flues, humidity and thermostatic controls and air filters in connection with any of these systems. This classification shall include warm-air heating, ventilating and air-conditioning systems that utilize solar energy.

A plumbing contractor provides a means for a supply of safe water, ample in volume and of suitable temperature for the purpose intended, and the proper disposal of fluid waste from the premises in all structures and fixed works. This classification includes but is not limited to:

• Complete removal of waste from the premises or the construction and connection of on-site waste disposal systems;
• Piping, storage tanks, and venting for a safe and adequate supply of gases and liquids for any purpose, including vacuum, compressed air/gases for medical, dental, commercial, and industrial uses;
• All gas appliances, flues, and gas connections for all systems including suspended space heating units. This does not include forced warm air units;
• Water and gas piping from the property owner’s side of the utility meter to the structure or fixed works;
• Installation of any type of equipment to heat water, or fluids, to a temperature suitable for the purposes listed in this section, including the installation of solar equipment for this purpose; and
• The maintenance and replacement of all items described above and all health and safety devices such as, but not limited to, gas earthquake valves, gas control valves, backflow preventers, water conditioning equipment, and regulating valves.

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

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.

UDC Corporation is a City of Los Angeles licensed fabricator approved to fabricate the following in the City of Los Angeles:

• Structural Steel Members
• Reinforcing Steel (rebar)
• Hollow Structural Shapes (such as tube steel / rectangular tube)
• Stainless Steel (stainless structural shapes including sheet metal fabrications)
• Aluminum (aluminum shapes including sheet metal fabrications)