California contractor license classifications
CSLB issues licenses by classification. A is General Engineering (roads, grading, large infrastructure). B is General Building: a B contractor can take jobs involving at least two unrelated trades on a structure. B-2 is Residential Remodeling. C classes are specialty trades; a specialty contractor should stick to their trade. [CSLB classifications]
| Code | Meaning |
|---|---|
| A | General Engineering |
| B | General Building |
| B-2 | Residential Remodeling |
| C-2 | Insulation & Acoustical |
| C-4 | Boiler, Hot Water & Steam |
| C-5 | Framing & Rough Carpentry |
| C-6 | Cabinet, Millwork & Finish Carpentry |
| C-7 | Low Voltage Systems |
| C-8 | Concrete |
| C-9 | Drywall |
| C10 | Electrical |
| C11 | Elevator |
| C12 | Earthwork & Paving |
| C13 | Fencing |
| C15 | Flooring & Floor Covering |
| C16 | Fire Protection |
| C17 | Glazing |
| C20 | Warm-Air Heating, Ventilating & Air-Conditioning (HVAC) |
| C21 | Building Moving & Demolition |
| C22 | Asbestos Abatement |
| C23 | Ornamental Metal |
| C27 | Landscaping |
| C28 | Lock & Security Equipment |
| C29 | Masonry |
| C31 | Construction Zone Traffic Control |
| C32 | Parking & Highway Improvement |
| C33 | Painting & Decorating |
| C34 | Pipeline |
| C35 | Lathing & Plastering |
| C36 | Plumbing |
| C38 | Refrigeration |
| C39 | Roofing |
| C42 | Sanitation System |
| C43 | Sheet Metal |
| C45 | Sign |
| C46 | Solar |
| C47 | General Manufactured Housing |
| C49 | Tree & Palm |
| C50 | Reinforcing Steel |
| C51 | Structural Steel |
| C53 | Swimming Pool |
| C54 | Ceramic & Mosaic Tile |
| C55 | Water Conditioning |
| C57 | Well Drilling |
| C60 | Welding |
| C61 | Limited Specialty |
Codes appear on license records without dashes for some classes (e.g. C10 = C-10 Electrical). C-61/D-xx are limited specialty sub-categories.