- E-100 General Engineering Contractor
- B-100 General Building Contractor
- R-100 Residential & Small Commercial Contractor
- R-101 Non structural Remodeling & Repair
- R-200 Factory Built Housing Setup Contractor
- S-200 General Electrical Contractor
- S-201 Residential Electrical Contractor
- S-210 General Plumbing Contractor
- S-211 Boiler Installation Contractor
- S-212 Irrigation Sprinkling Contractor
- S-213 Industrial Piping Contractor
- S-214 Water Conditioning Equipment Contractor
- S-215 Solar Energy Systems Contractor
- S-216 Residential Sewer Connection & Septic Tank Contractor
- S-217 Residential Plumbing Contractor
- S-220 Carpentry Contractor
- S-221 Cabinet & Millwork Installation Contractor
- S-230 Metal & Vinyl Siding Contractor
- S-231 Rain gutter Installation Contractor
- S-240 Glass & Glazing Contractor
- S-250 Insulation Contractor
- S-260 General Concrete Contractor
- S-261 Concrete Form Setting & Shoring Contractor
- S-262 Gunite & Pressure Grouting Contractor
- S-270 General Drywall, Stucco & Plastering Contractor
- S-271 Plastering & Stucco Contractor
- S-272 Ceiling Grid Systems, Ceiling Tile & Panel Systems Contractor
- S-273 Lightweight Metal & Nonbearing Wall Partitions Contractor
- S-280 General Roofing Contractor
- S-281 Single Ply & Specialty Coating Contractor
- S-282 Buildup Roofing Contractor
- S-283 Shingle & Shake Roofing Contractor
- S-284 Tile Roofing Contractor
- S-285 Metal Roofing Contractor
- S-290 General Masonry Contractor
- S-291 Stone Masonry Contractor
- S-292 Terrazzo Contractor
- S-293 Marble, Tile & Ceramic Contractor
- S-300 General Painting Contractor
- S-310 Excavation & Grading Contractor
- S-320 Steel Erection Contractor
- S-321 Steel Reinforcing Contractor
- S-322 Metal Building Erection
- S-323 Structural Stud Erection Contractor
- S-330 Landscaping Contractor
- S-340 Sheet Metal Contractor
- S-350 HVAC Contractor
- S-351 Refrigerated Air Conditioning contractor
- S-352 Evaporative Cooling Contractor
- S-353 Warm Air Heating Contractor
- S-360 Refrigeration Contractor
- S-370 Fire Suppression Systems Contractor
- S-380 Swimming Pool & Spa Contractor
- S-390 Sewer & Water Pipeline Contractor
- S-400 Asphalt Paving Contractor
- S-410 Pipeline & Conduit Contractor
- S-420 General Fencing & Guardrail Contractor
- S-421 Residential Fencing Contractor
- S-430 Metal Firebox & Fuel Burning Stove Installer
- S-440 Sign Installation Contractor
- S-441 Non-electrical Outdoor Advertising Sign Contractor
- S-450 Mechanical Insulation Contractor
- S-460 Wrecking and Demolition Contractor
- S-470 Petroleum System Contractor
- S-480 Piers and Foundations Contractor