Law and Business | CA C-61 Contractor Exam Prep

California Contractor Law & Business Diagnostic Quiz

• Time Limit: 35 Minutes (Simulating official CSLB exam pacing)

• Instructions: Answer all 20 questions below. To ensure an accurate assessment of your professional baseline, treat this as a closed-book test—do not look up codes or use outside reference materials.

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D1 Architectural Porcelain – Now under D-64 Nonspecialized
D2 Asbestos Fabrication – Now under C-2
D3 Awnings
D4 Central Vacuum Systems
D5 Communication Equipment – Converted to C-7
D6 Concrete Related Services
D7 Conveyors Cranes – Now under D-21 Machinery and Pumps
D8 Doors and Door Services – Now under D-28 Doors Gates and Activating Devices
D9 Drilling Blasting and Oil Field Work
D10 Elevated Floors
D11 Fencing – Converted to C-13
D12 Synthetic Products
D13 Fire Extinguisher Systems – Now under C-16
D14 Floor Covering Converted to C-15
D15 Furnaces – Now under General A or C-20
D16 Hardware Locks and Safes
D17 Industrial Insulation – Now under C-2
D18 Prison and Jail Equipment – Under relevant class
D19 Land Clearing – Now under C-12 or General A – If a license is required
D20 Lead Burning and Fabrication – Now under D-64 Non-specialized
D21 Machinery and Pumps
D22 Marble – Now under C-29
D23 Medical Gas Systems – Now under C-36
D24 Metal Products
D25 Mirrors and Fixed Glass – Now under C-17
D26 Mobile Home Installation and Repairs – Converted to C-47
D27 Movable Partitions – Now under D-34 Prefabricated Equipment
D28 Doors, Gates, and Activating Devices
D29 Paperhanging
D30 Pile Driving and Pressure Foundation Jacking
D31 Pole Installation and Maintenance
D32 Power Nailing and Fastening – Now under D-64 Nonspecialized
D33 Precast Concrete Stairs – Now under C-29
D34 Prefabricated Equipment
D35 Pool and Spa Maintenance
D36 Rigging and Rig Building – Now under General A
D37 Safes and Vaults – Now under D-16 Hardware Locks and Safes
D38 Sand and Water Blasting
D39 Scaffolding
D40 Service Station Equipment and Maintenance
D41 Siding and Decking
D42 Non-Electrical Sign Installation
D43 Soil Grouting – Now under C-32 or C-12 or General A
D44 Sprinklers – Now under D-12 Synthetic Products
D45 Staff and Stone – Now under C-29
D46 Steeple Jack Work – Under relevant class
D47 Tennis Court Surfacing – Now under C-12 or General A
D48 Theater and School Equipment – Now under D34 Prefabricated Equipment
D49 Tree Service
D50 Suspended Ceilings
D51 Waterproofing and Weatherproofing – Under relevant class
D52 Window Coverings
D53 Wood Tanks
D54 Rockscaping – Now under C-15 or C-27
D55 Blasting – Now under C-12 or General A
D56 Trenching Only
D57 Propane Gas Plants – Now under General A
D58 Residential Floating Docks – Now under General A
D59 Hydroseed Spraying
D60 Striping – Now under C-32
D61 Gold Leaf Gilding – Now under D-64 Nonspecialized
D62 Air and Water Balancing
D63 Construction Cleanup
D64 Non-specialized
D65 Weatherization and Energy Conservation

D3 Awnings: An awning contractor installs, modifies, or repairs aluminum, metal, vinyl, or canvas awnings and patio covers. These installations can be either freestanding or attached to a structure. Patio enclosures or carports are not included in this classification.

D4 Central Vacuum Systems: A central vacuum systems contractor installs, modifies, maintains, or repairs central vacuum systems, pneumatic tube dispatching systems, or any other type of pipeline which operates systems of reduced pressure for any purpose.

D6 Concrete-Related Services: A concrete-related services contractor installs reusable steel concrete form sections or interlocking precast pavers; performs post-tensioning work, concrete sawing, breaking, curing, floor hardening treatment, coloring concrete, concrete restoration, coring work or operates a concrete pumping service; and also includes the application of gunite, but does not include the installation of reinforcing steel.

D9 Drilling, Blasting, and Oil Field Work: A drilling, blasting, and oil field work contractor does core and post hole drilling, horizontal drilling (no piping), and drilling for placement of charges and performing blasting work; performs drilling for site dewatering, oil well drilling, and other oilfield-related specialty work. (DOES NOT INCLUDE WATER WELL DRILLING)

D10 Elevated Floors: An elevated floors contractor installs wood or metal framed elevated computer flooring systems. This work does not include the construction of mezzanines.

D12 Synthetic Products: A synthetic products contractor installs:

(a) Synthetic countertops and wall coverings; fiberglass, plastic, vinyl, and epoxy products; plastic tile board and decorative artwork; and synthetic turf;

(b) Bathtub and enamel refinishing, resin and epoxy application, and synthetic caulking and sealants;

(c) Reservoir liners, vinyl swimming pool relining, pier piling wrap, and rodent guards; and

(d) PVC piping systems for irrigation and drainage; and subsurface irrigation drip systems.

D16 Hardware, Locks, and Safes: A hardware, locks, and safes contractor installs, modifies, or repairs power and/or manually activated door and window locks with related hardware, built-in safes, and vaults.

D21 Machinery and Pumps: A machinery and pumps contractor installs, removes, modifies, or repairs:

(a) Pumps; conveyors; cranes; dock levelers; various hoisting and material handling equipment; and meters;

(b) Dumbwaiters; handicap lifting and assistance equipment; automated speed-rail trolley systems for garment hanging; and

(c) Automatic car washing racks and auto body paint finishing booth equipment.

NOTE: Construction of buildings and/or roof structures for this equipment is not included.

D-24 Metal Products: A metal products contractor installs, modifies, or repairs the following:

(a) Metal cabinets, lockers, modular storage structures, mail chutes, cable racks; and aluminum or vinyl storm doors and windows;

(b) Metal wall tiles; aluminum fascia covers; and metal gutters; and

(c) Aluminum studs and trusses; metal railings and turnstiles; metal prison cell accessories such as welded-to-structure cell furniture; grills; and cabinets.

D28 Doors, Gates, and Activating Devices: Doors, gates, and activating devices contractor installs, modifies, or repairs all residential, commercial, or industrial doors, including overhead or sliding door assemblies. This includes but is not limited to: wood and screen doors, metal-clad doors, glass sliding/ stationary doors and frames, automatic revolving doors, hospital cubical doors, and related installations; power-activated doors, gates, movable sunshades/shutters; card-activated equipment, and other access control device; and any low-voltage electronic or manually operated door hardware/device.

D29 Paperhanging: A paper-hanging contractor applies all types and varieties of decorative wall coverings, except painting or paneling, including paper and vinyl goods, cork, burlap, and carpet-type wall coverings.

D30 Pile Driving/Pressure Foundation Jacking: A pile driving/pressure foundation jacking contractor provides a pile driving and/or caisson drilling or auger service. This work also includes but is not limited to the injection of concrete or mortar into foundations for stabilization purposes.

D31 Pole Installation and Maintenance: A pole installation and maintenance contractor installs wood or precast poles to support the wiring or cable installed by others or installs and maintains flagpoles.

D34 Prefabricated Equipment: A prefabricated equipment contractor installs prefabricated products/equipment, including but not limited to the following:

(a) Theater stage equipment, school classroom equipment, playground equipment, bleacher bench/seat component parts (no installation or renovation of any supporting or structural member); store fixtures and display cases (either prefabricated or modular form); all forms and types of toilet/shower room partitions/accessories; and prefabricated closet systems.

(b) Laboratory and medical equipment and dust-collecting systems; factory-built fireplaces and accessories (no masonry facing); major appliance installations and ventilating hoods in connection with existing fuel and energy lines installed by others.

(c) Bus stop shelters, prefabricated phone booths; prefabricated soundproof environmental clean rooms; panelized refrigerated walk-in boxes (not to include the work of refrigeration contractor); all types of modular office, institutional, or home improvement systems including, but not limited to, all types of pre-finished and/or UL listed pre-wired wall panels.

D35 Pool and Spa Maintenance: A pool and spa maintenance contractor installs, replaces, or repairs pool motors, pumps,
filters, gas heaters, and any above-ground piping in connection with pools; includes electrical switches, breakers, pool lights, diving boards, existing solar systems that heat pools, pool and spa acid baths, and applies vinyl liners to existing surfaces.

D38 Sand and Water Blasting: A sand and water blasting contractor uses the force of compressed air in conjunction with abrasive materials or water to clean or prepare surfaces for any protective, decorative, and/or functional treatment.

D39 Scaffolding: A scaffolding contractor erects metal or wood scaffolding, including temporary sidewalk-sheltered construction work barricades.

D40 Service Station Equipment and Maintenance: A service station maintenance contractor installs and/or removes underground fuel storage tanks up to 20,000 gallons, which have been or are to be used for dispensing gasoline, diesel fuel, waste oil, or kerosene (no chemicals). This work involves the installation and/or removal of all incidental tank-related piping, electrical work, including the installation of vapor probes in backfill areas of the tanks and any associated calibration work including, but not limited to, the testing and adjustment of leak detection and vapor recovery equipment, such as automatic tank gauges, leak line detectors, vapor recovery lines, and in-station diagnostics. This contractor also installs auto hoisting equipment, grease racks, compressors, air hoses, and other service station equipment.

NOTE: Licensees holding this classification before January 18, 2001, may perform all the work described above. Licenses issued after this date may perform the “calibration” work only.

D41 Siding and Decking: A siding and decking contractor applies or installs all types of exterior siding, including wood, wood products, vinyl, aluminum, and metal siding, to new or existing buildings. This contractor also constructs wooden decks and related handrails. This work shall not include the construction or installation of covers or enclosures of any kind.

D42 Non-Electrical Sign Installation: A non-electrical sign installation contractor fabricates and installs all types of 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.

D49 Tree Service: A tree service contractor prunes trees, removes trees, limbs, or stumps (including grinding), and engages in tree or limb guying.

D50 Suspended Ceilings: A suspended ceilings contractor installs, modifies, or repairs all types of suspended ceilings including, but not limited to: lay-in-grid and other types of systems involving solid, perforated, or translucent ceiling panels (no electrical work).

D52 Window Coverings: A window coverings contractor installs or applies decorative, architectural/functional window/glass treatment or covering products including, but not limited to: all types of materials and fabrics that make up louvers, shutters, Venetian, and mini-blinds; residential or commercial draperies and screens; expanded metal window and door guards; plastic film window treatment and/or any other window treatment applied for temperature control or as a screening device.

D53 Wood Tanks: A wood tanks contractor erects or repairs elevated wooden storage tanks and related cooling towers. (Hot tubs are not included.)

D56 Trenching: A trenching contractor is limited to trenching only for foundations, pipelines, conduit, and related trenching work.

D59 Hydroseed Spraying: A hydroseed spraying contractor applies seeds through any liquid media to any type of surface that others have prepared or contoured.

D62 Air and Water Balancing: An air and water balancing contractor installs any device and performs any work related to providing a specified flow of air in all types of existing heating and cooling systems and/or related to providing a specified flow of water in water piping systems.

D63 Construction Cleanup: A construction cleanup contractor cleans up and/or removes from building grounds or structures any debris resultant from any construction project including, but not limited to: concrete, dirt, scrap lumber, plaster, drywall, any paint or adhesive products from windows, floors, ceramic tile, and bathroom fixtures.

D64 Non-specialized: A non-specialized contractor installs, modifies, maintains, and repairs new products and/or new installations which are not defined in any section herein or defined in any license classification authorized by the Board under Chapter 9, Division 3 of the Business and Professions Code (Contractors License Law).

D65 Weatherization and Energy Conservation: A weatherization and energy conservation contractor installs, removes, modifies, or repairs or provides maintenance services for energy conservation products limited to the following: door and window weather stripping, caulking, water heater pipe wrap, water heater blankets, insulating gaskets for electrical outlet covers, shade screens, shutters, storm windows, tinted window film, residential water flow-restricting devices installed onto existing fixtures. (DOES NOT INCLUDE INSULATION, GLAZING OR HEATING, VENTILATING, AND AIR-CONDITIONING WORK)

The CSLB has listed the C-61 classifications into D subcategories for administrative tracking.

(a) Limited specialty: 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.