- Plumbing, heating, air-conditioning (8)
- Painting and paper hanging (6)
- Electrical work (12)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (4)
- Terrazzo, tile, marble and mosaic work (2)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (3)
- Concrete work (4)
- Water well drilling (1)
- Structural steel erection (1)
- Excavation work (4)
- Special trade contractors, nec (2)
