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C-2 Insulation and Acoustical
An insulation and acoustical contractor installs any insulating media and preformed architectural acoustical materials for the purpose of temperature and/or sound control. (832.02 CCR)

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. (832.04 CCR)

C-5 Framing and Rough 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, and 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. (832.05 CCR) (Actual
Conversion Date: January 1, 2003)

C-6 Cabinet, Millwork and Finish Carpentry
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. (832.06 CCR) (Actual Conversion Date: January 1, 2003)

C-7 Low Voltage Systems
A communication and low voltage systems contractor installs, services and maintains all
types of communication 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. (832.07 CCR)

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 placing and erecting of steel or bars for the
reinforcing of mass, pavement, flat and other concrete work. (832.08 CCR)

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. (832.09 CCR)

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. (832.10 CCR)

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. (832.11 CCR)

C-12 Earthwork and Paving
An earthwork and paving contractor digs, moves, and places material forming the surface
of the earth, other than water, in such a manner that a cut, fill, excavation, grade, trench,
backfill, or tunnel (if incidental thereto) can be executed, including the use of explosives
for these purposes. This classification includes the mixing, fabricating and placing of
paving and any other surfacing materials. (832.12 CCR)

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. (832.13 CCR)

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. (832.15 CCR)

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. (832.16 CCR)

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. (832.17 CCR)

C-20 Warm-Air Heating, Ventilating and 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. (832.20 CCR)

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. (832.21 CCR)

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. (832.23 CCR)

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. (832.27 CCR)

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 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. (832.28 CCR)

C-29 Masonry
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. (832.29 CCR)

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. (832.31 CCR)

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. (832.32 CCR)

C-33 Painting and 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, turpentines,
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. (832.33 CCR)

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. (832.34 CCR)

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 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 applications for the C-26 classification will be accepted and
no new C-26 Lathing licenses will be issued. (832.35 CCR)

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 preventers, water conditioning equipment and regulating valves.
(832.36 CCR)

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 (50º), or ten degrees Celsius (10º). (832.38 CCR)

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 or membrane material(s) or a combination thereof. (832.39 CCR)

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. (832.42 CCR)

C-45 Sign
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. (832.45 CCR)

C-46 Solar
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. (832.46 CCR)

C-47 General Manufactured Housing
(a) 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.
(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. (832.47 CCR)

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. (832.50 CCR)

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. (832.51 CCR)

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. (832.53 CCR)

C-54 Tile (Ceramic and Mosaic)
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. (832.54 CCR)

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.
(832.55 CCR)

C-57 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. (832.57 CCR)

C-60 Welding
A welding contractor causes metal 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. (832.60 CCR)

C-61 Limited Specialties
California Code of Regulations
Division 8, Title 16, Article 3. Classification
(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