License Classifications
CALIFORNIA CONTRACTORS LICENSE CLASSIFICATIONS
| A | General Engineering Contractor | C-29 | Masonry Contractor |
| B | General Contractor | C-32 | Parking & Highway Improvement Contractor |
| C-2 | Insulation and Acoustical Contractor | C-33 | Painting & Decorating Contractor |
| C-4 | Boiler, Hot Water Heating and Steam Fitting Contractor | C-34 | Pipeline Contractor |
| C-6 | Cabinet & Millwork Contractor | C-35 | Plastering Contractor |
| C-7 | Low Voltage Systems Contractor | C-36 | Plumbing Contractor |
| C-8 | Concrete Contractor | C-38 | Refrigeration Contractor |
| C-9 | Drywall Contractor | C-39 | Roofing Contractor |
| C-10 | Electrical Contractor | C-42 | Sanitation System Contractor |
| C-11 | Elevator Contractor | C-43 | Sheet Metal Contractor |
| C-12 | Earthwork & Paving Contractor | C-45 | Electrical Sign Contractor |
| C-13 | Fencing Contractor | C-46 | Solar Contractor |
| C-14 | Metal Roofing Contractor | C-47 | General Manufactured Housing Contractor |
| C-15 | Flooring & Floor Covering Contractor | C-50 | Reinforcing Steel Contractor |
| C-16 | Fire Protection Contractor | C-51 | Structural Steel Contractor |
| C-17 | Glazing Contractor | C-53 | Swimming Pool Contractor |
| C-20 | Warm Air Heating, Ventilating & Air Conditioning Contractor | C-54 | Tile Contractor (Ceramic & Mosaic) |
| C-21 | Building Moving/Demolition Contractor | C-55 | Water Conditioning Contractor |
| C-23 | Ornamental Metal Contractor | C-57 | Well Drilling Contractor |
| C-26 | Lathing Contractor | C-60 | Welding Contractor |
| C-27 | Landscaping Contractor | C-61 | Limited Specialty Contractor |
LOCAL & STATE ASSOCIATION ABBREVIATIONS
| American Institute of Architects | AIA |
| American Society of Heating, Refrigeration & A/C Engineers | ASHRAE |
| Associated Builders & Contractors, Inc. | ABC |
| Associated General Contractors, Inc. | AGC |
| Builders Exchange Compensation Council | BECC |
| Building Industry Association | BIA |
| California Association of Builders Exchanges | CABE |
| California Builders Exchange Executive | CBEE |
| Construction Specification Institute | CSI |
| Contractors State License Board | CSLB |
| Construction Industry Force Account Council | CIFAC |
| Construction Industry Legislative Council | CILC |
| Mechanical Contractors Association of America | MCAA |
| National Asbestos Council | NAC |
| National Association of Home Builders | NAHB |
| National Association of Professional Estimators | NAPE |
| National Association of Women in Construction | NAWIC |
| National Electrical Contractors Association | NECA |
| Pacific Coast Builders Conference | PCBC |
| Plumbing, Heating, Cooling Contractors | PHCC |
| Sheet Metal, Air Conditioning, Contr. National Association | SMACNA |
| (USDA) Soil Conservation Service | SCS |
| Women Business Owners & Executive, USA |
WBOE, USA
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