Contractors Classification List

A – General Engineering Contractor

B – General Building Contractor

C – Specialty Contractor

  • C-2 – Insulation and Acoustical Contractor
  • C-4 – Boiler, Hot Water Heating and Steam Fitting Contractor
  • C-5 – Framing and Rough Carpentry Contractor
  • C-6 – Cabinet, Millwork and Finish Carpentry Contractor
  • C-7 – Low Voltage Systems Contractor
  • C-8 – Concrete Contractor
  • C-9 – Drywall Contractor
  • C10 – Electrical Contractor
  • C11 – Elevator Contractor
  • C12 – Earthwork and Paving Contractors
  • C13 – Fencing Contractor
  • C14 – Metal Roofing Contractor [repealed]
  • C15 – Flooring and Floor Covering Contractors
  • C16 – Fire Protection Contractor
  • C17 – Glazing Contractor
  • C20 – Warm-Air Heating, Ventilating and Air-Conditioning Contractor
  • C21 – Building Moving/Demolition Contractor
  • C22 – Asbestos Abatement
  • C23 – Ornamental Metal Contractor
  • C26 – Lathing Contractor [repealed]
  • C27 – Landscaping Contractor
  • C28 – Lock and Security Equipment Contractor
  • C29 – Masonry Contractor
  • C31 – Construction Zone Traffic Control Contractor
  • C32 – Parking and Highway Improvement Contractor
  • C33 – Painting and Decorating Contractor
  • C34 – Pipeline Contractor
  • C35 – Lathing and Plastering Contractor
  • C36 – Plumbing Contractor
  • C38 – Refrigeration Contractor
  • C39 – Roofing Contractor
  • C42 – Sanitation System Contractor
  • C43 – Sheet Metal Contractor
  • C45 – Sign Contractor
  • C46 – Solar Contractor
  • C47 – General Manufactured Housing Contractor
  • C50 – Reinforcing Steel Contractor
  • C51 – Structural Steel Contractor
  • C53 – Swimming Pool Contractor
  • C54 – Ceramic and Mosaic Tile Contractor
  • C55 – Water Conditioning Contractor
  • C57 – Water Well Drilling Contractor
  • C60 – Welding Contractor
  • C61 – Limited Specialty:
    • D01 – Architectural Porcelain (Now under D64)
    • D02 – Asbestos Fabrication (Now under C-2)
    • D03 – Awnings
    • D04 – Central Vacuum Systems
    • D05 – Communication Equipment (Converted to C-7)
    • D06 – Concrete Related Services
    • D07 – Conveyors-Cranes (Now under D21)
    • D08 – Doors and Door Services (Now under D28)
    • D09 – Drilling, Blasting and Oil Field Work
    • D10 – Elevated Floors
    • D11 – Fencing (Converted to C13)
    • D12 – Synthetic Products
    • D13 – Fire Extinguisher Systems (Now under C16)
    • D14 – Floor Covering (Converted to C15)
    • D15 – Furnaces (Now under “A” or C20)
    • 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 C12 or “A” if license is required)
    • D20 – Lead Burning and Fabrication (Now under D64)
    • D21 – Machinery and Pumps
    • D22 – Marble (Now under C29)
    • D23 – Medical Gas Systems (Now under C36)
    • D24 – Metal Products
    • D25 – Mirrors and Fixed Glass (Now under C17)
    • D26 – Mobile Home Installation and Repairs (Converted to C47)
    • D27 – Movable Partitions (Now under D34)
    • 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 D64)
    • D33 – Precast Concrete Stairs (Now under C23)
    • D34 – Prefabricated Equipment
    • D35 – Pool and Spa Maintenance
    • D36 – Rigging and Rig Building (Now under “A”)
    • D37 – Safes and Vaults (Now under D16)
    • 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 C32, C12 or “A”)
    • D44 – Sprinklers (Now under D12)
    • D45 – Staff and Stone (Now under C29)
    • D46 – Steeple Jack Work (under relevant class)
    • D47 – Tennis Court Surfacing (Now under C12) or “A”)
    • D48 – Theater and School Equipment (Now under D34)
    • D49 – Tree Service
    • D50 – Suspended Ceilings
    • D51 – Waterproofing and Weatherproofing (under relevant class)
    • D52 – Window Coverings
    • D53 – Wood Tanks
    • D54 – Rockscaping (Now under C15 or C27)
    • D55 – Blasting (Now under C12 or “A”)
    • D56 – Trenching Only
    • D57 – Propane Gas Plants (Now under “A”)
    • D58 – Residential Floating Docks (Now under “A”)
    • D59 – Hydroseed Spraying
    • D60 – Striping (Now under C32)
    • D61 – Gold Leaf Gilding (Now under D64)
    • D62 – Air and Water Balancing
    • D63 – Construction Clean-up
    • D64 – Non-specialized
    • D65 – Weatherization and Energy Conservation

ASB – Asbestos Certification

HAZ – Hazardous Substance Removal Certification

HIC – Home Improvement Certification [repealed]