- Plumbing, heating, air-conditioning (18)
- Painting and paper hanging (10)
- Electrical work (13)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (7)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (3)
- Floor laying and floor work, nec (3)
- Roofing, siding, and sheetmetal work (5)
- Concrete work (9)
- Water well drilling (2)
- Structural steel erection (6)
- Glass and glazing work (2)
- Excavation work (2)
- Wrecking and demolition work (1)
- Special trade contractors, nec (21)
