- Plumbing, heating, air-conditioning (13)
- Painting and paper hanging (3)
- Electrical work (16)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (4)
- Terrazzo, tile, marble and mosaic work (1)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (5)
- Concrete work (7)
- Water well drilling (8)
- Structural steel erection (1)
- Glass and glazing work (2)
- Excavation work (9)
- Special trade contractors, nec (17)
