| Category - Special Trade Contractors |
| 233 |
Building, Developing, & General Contracting |
| 234 |
Heavy Construction |
| 235 |
Special Trade Contractors |
|
| Sub-Categories |
| Plumbing, Heating, and Air-Conditioning Contractors |
| Plumbing, Heating, and Air-Conditioning Contractors |
| Painting and Wall Covering Contractors |
| Painting and Wall Covering Contractors |
| Electrical Contractors |
| Electrical Contractors |
| Masonry, Drywall, Insulation, and Tile Contractors |
| Masonry and Stone Contractors |
| Drywall, Plastering, Acoustical, and Insulation Contractors |
| Tile, Marble, Terrazzo, and Mosaic Contractors |
| Carpentry and Floor Contractors |
| Carpentry Contractors |
| Floor Laying and Other Floor Contractors |
| Roofing, Siding, and Sheet Metal Contractors |
| Roofing, Siding, and Sheet Metal Contractors |
| Concrete Contractors |
| Concrete Contractors |
| Water Well Drilling Contractors |
| Water Well Drilling Contractors |
| Other Special Trade Contractors |
| Structural Steel Erection Contractors |
| Glass and Glazing Contractors |
| Excavation Contractors |
| Wrecking and Demolition Contractors |
| Building Equipment and Other Machinery Installation Contractors |
| All Other Special Trade Contractors |
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