- Plumbing, heating, air-conditioning (30)
- Painting and paper hanging (13)
- Electrical work (34)
- Masonry and other stonework (6)
- Plastering, drywall, and insulation (4)
- Terrazzo, tile, marble and mosaic work (5)
- Carpentry work (13)
- Floor laying and floor work, nec (8)
- Roofing, siding, and sheetmetal work (9)
- Concrete work (5)
- Water well drilling (1)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (8)
- Wrecking and demolition work (1)
- Special trade contractors, nec (20)
