CLC – Licenses and Descriptions
Click a license classification below to jump to its description as stated by the California State Contractors License Board:
A – General Engineering:
A general engineering contractor’s principal 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.
B – General Building:
a) Except as provided in this section, 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 superintend the whole or any part thereof.
This does not include anyone who merely furnishes materials or supplies under Section 7045 without fabricating them into, or consuming them in the performance of the work of the general building contractor.
(b) A general building contractor may take a prime contract or a subcontract for a framing or carpentry project. However, a general building contractor shall not take a prime contract for any project involving trades other than framing or carpentry unless the prime contract requires at least two unrelated building trades or crafts other than framing or carpentry, or unless the general building contractor holds the appropriate specialty license or subcontracts with an appropriately licensed specialty contractor to perform the work. A general building contractor shall not take a subcontract involving trades other than framing or carpentry, unless the subcontract requires at least two unrelated trades or crafts other than framing or carpentry, or unless the general building contractor holds the required specialty license. The general building contractor may not count framing or carpentry in calculating the two unrelated trades necessary in order for the general building contractor to be able to take a prime contract or subcontract for a project involving other trades.
(c) No general building contractor shall contract for any project that includes the “C-16” Fire Protection classification as provided for in Section 7026.12 or the “C-57” Well Drilling classification as provided for in Section 13750.5 of the Water Code, unless the general building contractor holds the specialty license, or subcontracts with the appropriately licensed specialty contractor.
(Amended by Stats. 1997, Chapter 812 (SB 857).)
C-2 – Insulation:
An insulation and acoustical contractor installs any insulating media and preformed architectural acoustical materials for the purpose of temperature and/or sound control.
C-4 – Boiler, Hot-Water Heating and Steam Fitting:
A boiler, hot-water heating and steam fitting contractor installs, services and repairs power boiler installations, hot-water heating systems and steam fitting, including fire-tube and water-tube steel power boilers and hot-water heating low pressure boilers,steam fitting and piping, fittings, valves, gauges, pumps, radiators, convectors, fuel oil tanks, fuel oil lines, chimneys, flues, heat insulation and all other equipment, including solar heating equipment, associated with these systems.
C-5 – Carpentry:
A framing and rough carpentry contractor performs any form work, framing or rough carpentry necessary to construct framed structures; installs or repairs individual components of framing systems and performs any rough carpentry or associated work, including but not limited to the construction or installation of: sub-flooring, siding, exterior staircases and railings, overhead doors, roof decking, truss members, & sheathing.
The amendments made to this section in 2002 shall become operative January 1, 2003, or as soon thereafter as administratively feasible, whereupon any licensee who has passed the C-5 Carpentry, Cabinet and Millwork trade examination on or after January 10, 2000, up to the effective date of this section, shall have the C-6 Cabinet, Millwork and Finish Carpentry classification added to the applicable license.
C-6 – Cabinetry & Millwork:
A cabinet, millwork and finish carpentry contractor makes cabinets, cases, sashes, doors, trims, nonbearing partitions and other items of “finish carpentry” by cutting, surfacing, joining, gluing and fabricating wood or other products to provide a functional surface. This contractor also places, erects, and finishes such cabinets and millwork in structures.
The amendments made to this section in 2002 shall become operative January 1, 2003, or as soon thereafter as administratively feasible, whereupon the C-6 Cabinet, Millwork and Finish Carpentry classification shall replace the C-5 Carpentry, Cabinet and Millwork classification on any license unless the qualifier for the license has passed the C-5 Carpentry, Cabinet and Millwork trade exam on or after January 10, 2000, or held the C-5 classification prior to that date.
C-7 Low Voltage:
A communication and low voltage contractor installs, services and maintains all types ofcommunication and low voltage systems which are energy limited and do not exceed 91 volts. These systems include, but are not limited to telephone systems, sound systems, cable television systems, closed-circuit video systems, satellite dish antennas, instrumentation and temperature controls, and low voltage landscape lighting. Low voltage fire alarm systems are specifically not included in this section.
C-8 Concrete:
A concrete contractor forms, pours, places, finishes and installs specified mass, pavement, flat and other concrete work; and places and sets screeds for pavements or flatwork. This class shall not include contractors whose sole contracting business is the application of plaster coatings or the placing and erecting of steel or bars for the reinforcing of mass, pavement, flat and other concrete work.
C-9 Drywall:
A drywall contractor lays out and installs gypsum wall board and gypsum wall board assemblies including nonstructural metal framing members, and performs the taping and texturing operations including the application of compounds that adhere to wall board to produce a continuous smooth or textured surface.
C-10 Electrical:
An electrical contractor places, installs, erects or connects any electrical wires, fixtures, appliances, apparatus, raceways, conduits, solar photovoltaic cells or any part thereof, which generate, transmit, transform or utilize electrical energy in any form or for any purpose. Click HERE to learn about the Electrical Certification Program!
C-11 Elevator:
An elevator contractor fabricates, erects, installs and repairs elevators, including sheave beams, motors, sheaves, cable and wire rope, guides, cab, counterweights, doors (including sidewalk elevator doors), automatic and manual controls, signal systems, and all other devices and equipment associated with the safe and efficient installation and operation of electrical, hydraulic and manually operated elevators.
C-13 Fencing:
A fencing contractor constructs, erects, alters, or repairs all types of fences, corrals, runs, railings, cribs, game court enclosures, guard rails and barriers, playground game equipment, backstops, posts, flagpoles, and gates, excluding masonry walls.
C-14 Metal Roofing:
License are no longer issued.
C-15 Flooring and Floor Covering:
A flooring and floor covering contractor prepares any surface for the installation of flooring and floor coverings, and installs carpet, resilient sheet goods, resilient tile, wood floors and flooring (including the finishing and repairing thereof), and any other materials established as flooring and floor covering material, except ceramic tile.
C-16 Fire Protection:
A Fire protection contractor lays out, fabricates and installs all types of fire protection systems; including all the equipment associated with these systems, excluding electrical alarm systems.
C-17 Glazing:
A glazing contractor selects, cuts, assembles and/or installs all makes and kinds of glass, glass work, mirrored glass, and glass substitute materials for glazing; executes the fabrication and glazing of frames, panels, sashes and doors; and/or installs these items in any structure.
C-20 Warm-Air Heating, Ventilating & Air-Conditioning:
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 which utilize solar energy.
C-21 – Building moving/Demolition:
A building moving/demolition contractor raises, lowers, cribs, underpins, demolishes and moves or removes structures, including their foundations. This classification does not include the alterations, additions, repairs or rehabilitation of the permanently retained portions of such structures.
C-23 Ornamental Metal:
An ornamental metals contractor assembles, casts, cuts, shapes, stamps, forges, welds, fabricates and installs, sheet, rolled and cast, brass, bronze, copper, cast iron, wrought iron, monel metal, stainless steel, steel, and/or any other metal for the architectural treatment and ornamental decoration of structures. This classification does not include the work of a sheet metal contractor.
C-26 Lathing:
license no longer issued. See License C-35 Lathing and Plastering below.
C-27 Landscaping:
A landscape contractor constructs, maintains, repairs, installs, or subcontracts the development of landscape systems and facilities for public and private gardens and other areas which are designed to aesthetically, architecturally, horticulturally, or functionally improve the grounds within or surrounding a structure or a tract or plot of land. In connection therewith, a landscape contractor prepares and grades plots and areas of land for the installation of any architectural, horticultural and decorative treatment or arrangement.
C-28 Lock and Security Equipment:
A lock and security equipment contractor evaluates, sets-up, installs, maintains and repairs all doors and door assemblies, gates, locks and locking devices, panic and fire rated exit devices, manual and automatic operated gate and door closures and releases, jail and prison locking devices and permanently installed or built in safes and vaults. This classification includes but is not limited to master key systems, metal window guards, security doors, card activated and electronic access control systems for control equipment, motion and other types of detectors and computer systems for control and audit of control systems and other associated equipment. Fire alarm systems are specifically not included in this section.
C-29 Masonry Contractor:
A masonry contractor installs concrete units and baked clay products; concrete, glass and clay block; natural and manufactured stone; terra cotta; and fire brick or other material for refractory work. This classification includes the fabrication and installation of masonry component units for structural load bearing and non-load bearing walls for structures and fences installed with or without mortar; ceramic veneer (not tile) and thin brick that resembles full brick for facing; paving; and clear waterproofing, cleaning and caulking incidental to masonry construction.
C-31 Construction Zone Traffic Control:
A construction zone traffic control contractor prepares or removes lane closures, flagging, or traffic diversions, utilizing portable devices, such as cones, delineators, barricades, sign stands, flashing beacons, flashing arrow trailers, and changeable message signs, on roadways, including, but not limited to, public streets, highways, or any public conveyance.
C-32 Parking and Highway Improvement:
A parking and highway improvement contractor applies and installs protective coatings, vehicle stops, guard rails and mechanical devices, directional lines, buttons, markers, signs and arrows on the horizontal surface of any game court, parking facility, airport, highway or roadway constructed of concrete, asphalt or similar material. This classification includes the surface preparatory work necessary for the application of protective coatings but does not include the re-paving of these surfaces.
C-33 Painting & Decorating:
A painting and decorating contractor prepares by scraping, sandblasting or other means and applies any of the following: paints, papers, textures, fabrics, pigments, oils, turpentine, japans, driers, thinners, varnishes, shellacs, stains, fillers, waxes, adhesives, water and any other vehicles, mediums and materials which adhere by evaporation and may be mixed, used and applied to the surfaces of structures and the appurtenances thereto for purposes of decorating, protecting, fireproofing and waterproofing.
C-34 Pipeline:
A pipeline contractor fabricates and installs pipelines for the conveyance of fluids, such as water, gas, or petroleum, or for the containment or protection of any other material, including the application of protective coatings or systems and the trenching, boring, shoring, backfilling, compacting, paving and surfacing necessary to complete the installation of such pipelines.
C-35 Lathing and Plastering:
(a) A lathing and plastering contractor coats surfaces with a mixture of sand, gypsum plaster, quick-lime or hydrated lime and water, or sand and cement and water, or a combination of such other materials that create a permanent surface coating, including coatings for the purpose of soundproofing and fireproofing. These coatings are applied with a plasterer’s trowel or sprayed over any surface which offers a mechanical means for the support of such coating, and will adhere by suction. This contractor also installs lath (including metal studs) or any other material prepared or manufactured to provide a base or bond for such coating.
(b) A lathing and plastering contractor also applies and affixes wood and metal lath, or any other material prepared or manufactured to provide key or suction bases for the support of plaster coatings. This classification includes the channel work and metal studs for the support of metal or any other lathing material and for solid plaster partitions.
(c) Effective January 1, 1998, or as soon thereafter as administratively feasible, all C-26 licensees will be merged into the C-35 Lathing and Plastering classification. On and after January 1, 1998, no application for the C-26 classification will be accepted and no new C-26 Lathing licenses will be issued.
C-36 Plumbing:
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:
(a) Complete removal of waste from the premises or the construction and connection of on-site waste disposal systems;
(b) Piping, storage tanks and venting for a safe and adequate supply of gases and liquids for any purpose, including vacuum, compressed air and gases for medical, dental, commercial and industrial uses;
(c) All gas appliances, flues and gas connections for all systems including suspended space heating units. This does not include forced warm air units;
(d) Water and gas piping from the property owner’s side of the utility meter to the structure or fixed works;
(e) 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
(f) 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, back flow preventors, water conditioning equipment and regulating valves.
C- 38 Refrigeration:
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 (50 ), or ten degrees Celsius (10 ).
C-39 Roofing:
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, weatherproofing or membrane material(s) or a combination thereof.
C-42 Sanitation System:
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 nonvitreous pipe and any other hardware associated with these systems.
C-43 Sheet Metal:
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).
C-45 Electrical Sign:
An electrical sign contractor fabricates, installs and erects electrical signs, including the wiring of such electrical signs.
C-46 Solar:
A solar contractor installs, modifies, maintains, and repairs active solar energy systems. An active solar energy system consists of components which are thermally isolated from the living space for collection of solar energy and transfer of thermal energy to provide electricity and/or heating and cooling of air or water. Active solar energy systems include, but are not limited to, forced air systems, forced circulation water systems, thermosiphon systems, integral collector/storage systems, radiant systems, evaporative cooling systems with collectors, regenerative rockbed cooling systems, photovoltaic cells, and solar assisted absorption cooling systems.
A licensee classified in this section shall not undertake or perform building or construction trades, crafts or skills, except when required to install an active solar energy system. The C-46 classification will be issued after development of an examination. (Note: Development of the examination has been completed.)
C-47 Manufactured Housing:
(a) A general manufactured housing contractor installs, alters, repairs or prepares for moving any type of manufactured housing as that term is defined in Section 18007 of the Health and Safety Code, including the accessory buildings or structures, and the foundations. A manufactured house does not include any recreational vehicle, commercial coach or factory built housing as that term is defined in Section 19971 of the Health and Safety Code.
(b) A general manufactured housing contractor may provide utility services on a single family individual site placement. Utility services mean the connection of gas, water, sewer and electrical utilities to the home.
C-50 Reinforcing Steel:
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.
C-51 Structural Steel:
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.
C-53 Swimming Pool:
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.
C-54 Ceramic & Mosaic Tile:
A ceramic and mosaic tile contractor prepares surfaces as necessary and installs glazed wall, ceramic, mosaic, quarry, paver, faience, glass mosaic and stone tiles; thin tile that resembles full brick, natural or simulated stone slabs for bathtubs, showers and horizontal surfaces inside of buildings, or any tile units set in the traditional or innovative tile methods, excluding hollow or structural partition tile.
C-55 Water Conditioning:
A water conditioning contractor installs water conditioning equipment with the use of only such pipe and fittings as are necessary to connect the water conditioning equipment to the water supply system and to by-pass all those parts of the water supply system within the premises from which conditioned water is to be excluded.
C-57 Water Well Drilling:
A well drilling contractor installs and repairs water wells and pumps by boring, drilling, excavating, casing, cementing and cleaning to provide a supply of uncontaminated water.
C-60 Welding:
A welding contractor causes metals to become permanently attached, joined and fabricated by the use of gases and electrical energy, which creates temperatures of sufficient heat to perform this work.
C-61 Limited Specialty:
(a) Limited specialty is a specialty contractor classification limited to a field and scope of operations of specialty contracting for which an applicant is qualified other than any of the specialty contractor classifications listed and defined in this article.
(b) An applicant classified and licensed in the classification Limited Specialty shall confine activities as a contractor to that field or fields and scope of operations set forth in the application and accepted by the Registrar or to that permitted by Section 831.
(c) Upon issuance of a C-61 license, the Registrar shall endorse upon the face of the original license certificate the field and scope of operations in which the licensee has demonstrated qualifications.
(d) A specialty contractor, other than a C-61 contractor, may perform work within the field and scope of the operations of Classification C-61, provided the work is consistent with established usage and procedure in the construction industry and is related to the specialty contractor’s classification.
The CSLB has listed the C-61 classification into “D” categories for administrative tracking. See list below:
D03 – Awnings
D04 – Central Vacuum Systems
D06 – Concrete Related Services
D09 – Drilling, Blasting and Oil Field Work
D10 – Elevated Floors
D12 – Synthetic Products
D16 – Hardware, Locks and Safes
D21 – Machinery and Pumps
D24 – Metal Products
D28 – Doors, Gates and Activating Devices
D29 – Paperhanging
D30 – Pile Driving and Pressure Foundation Jacking
D31 – Pole Installation and Maintenance
D34 – Prefabricated Equipment
D35 – Pool and Spa Maintenance
D38 – Sand and Water Blasting
D39 – Scaffolding
D40 – Service Station Equipment and Maintenance
D41 – Siding and Decking
D42 – Sign Installation
D49 – Tree Service
D50 – Suspended Ceilings
D52 – Window Coverings
D53 – Wood Tanks
D56 – Trenching Only
D59 – Hydroseed Spraying
D62 – Air and Water Balancing
D63 – Construction Clean-up
D64 – Non-specialized
D65 – Weatherization and Energy Conservation
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ASB – Asbestos Certification
7058.5. (a) No contractor shall engage in asbestos-related work, as defined in Section 6501.8 of the Labor Code, which involves 100 square feet or more of surface area of asbestos containing materials, unless the qualifier for the license passes an asbestos certification examination. Additional updated asbestos certification examinations may be required based on new health and safety information. The decision on whether to require an updated certification examination shall be made by the Contractors’ State License Board, in consultation with the Division of Occupational Safety and Health in the Department of Industrial Relations and the State Department of Health Services.
No asbestos certification examination shall be required for contractors involved with the installation, maintenance, and repair of asbestos cement pipe or sheets, vinyl asbestos floor materials, or asbestos bituminous or resinous materials.
“Asbestos” as used in this section, has the same meaning as defined in Section 6501.7 of the Labor Code.
(b) The Contractors’ State License Board shall develop, and deliver to all applicants with the request for bond and fee, a booklet containing information relative to handling and disposal of asbestos, together with an open book examination concerning asbestos-related work. All applicants for an initial contractor’s license and all applicants filing a delinquent renewal application who have not previously completed the open book examination shall complete and sign the open book examination and submit it to the Contractors’ State License Board with the required renewal or bond and fee.
(Amended by Stats. 1991, Chapter 1160 (AB 2190).)
HAZ – Hazardous Substance Removal Certification
7058.7. (a) No contractor shall engage in a removal or remedial action, as defined in subdivision (d), unless the qualifier for the license has passed an approved hazardous substance certification examination.
(b) (1) The Contractors’ State License Board, the Division of Occupational Safety and Health of the Department of Industrial Relations, and the Department of Toxic Substances Control shall jointly select an advisory committee, which shall be composed of two representatives of hazardous substance removal workers in California, two general engineering contractors in California, and two representatives of insurance companies in California who shall be selected by the Insurance Commissioner.
(2) The Contractors’ State License Board shall develop a written test for the certification of contractors engaged in hazardous substance removal or remedial action, in consultation with the Division of Occupational Safety and Health, the State Water Resources Control Board, the Department of Toxic Substances Control, and the advisory committee.
(c) The Contractors’ State License Board may require additional updated approved hazardous substance certification examinations of licensees currently certified based on new public or occupational health and safety information. The Contractors’ State License Board, in consultation with the Department of Toxic Substances Control and the State Water Resources Control Board, shall approve other initial and updated hazardous substance certification examinations and determine whether to require an updated certification examination of all current certificate holders.
(d) For purposes of this section “removal or remedial action” has the same meaning as found in Chapter 6.8 (commencing with Section 25300) of Division 20 of the Health and Safety Code, if the action requires the contractor to dig into the surface of the earth and remove the dug material and the action is at a site listed pursuant to Section 25356 of the Health and Safety Code or any other site listed as a hazardous waste site by the Department of Toxic Substances Control or a site listed on the National Priorities List compiled pursuant to the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (42 U.S.C. Sec. 9601 et seq.). “Removal or remedial action” does not include asbestos-related work, as defined in Section 6501.8 of the Labor Code, or work related to a hazardous substance spill on a highway.
e) (1) A contractor shall not install or remove an underground storage tank, unless the contractor has passed the hazardous substance certification examination developed pursuant to this section.
(2) A contractor who is not certified may bid on or contract for the installation or removal of an underground tank, as long as the work is performed by a contractor who is certified pursuant to this section.
(3) For purposes of this subdivision, “underground storage tank” has the same meaning as defined in subdivision (x) of Section 25281 of the Health and Safety Code.
(Amended by Stats. 1990, Chapter 1366 (SB 2004), eff. Sept. 26, 1990; amended by Stats. 1992, Chapter 1289 (AB 2743), Chapter 1290 (AB 3188), eff. Sept. 30, 1992; amended by Stats. 1993, Chapter 168 (AB 427).)
HIC – Home Improvement Certification:
No longer issued.