- Plumbing, heating, air-conditioning (30)
- Painting and paper hanging (13)
- Electrical work (16)
- Masonry and other stonework (15)
- Plastering, drywall, and insulation (7)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (7)
- Floor laying and floor work, nec (5)
- Roofing, siding, and sheetmetal work (12)
- Concrete work (8)
- Water well drilling (4)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (10)
- Wrecking and demolition work (2)
- Special trade contractors, nec (9)
