- Plumbing, heating, air-conditioning (13)
- Painting and paper hanging (14)
- Electrical work (4)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (6)
- Terrazzo, tile, marble and mosaic work (3)
- Carpentry work (6)
- Floor laying and floor work, nec (3)
- Roofing, siding, and sheetmetal work (2)
- Concrete work (6)
- Excavation work (3)
- Special trade contractors, nec (16)
