- Plumbing, heating, air-conditioning (50)
- Painting and paper hanging (37)
- Electrical work (29)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (7)
- Terrazzo, tile, marble and mosaic work (9)
- Carpentry work (12)
- Floor laying and floor work, nec (4)
- Roofing, siding, and sheetmetal work (23)
- Concrete work (20)
- Structural steel erection (1)
- Glass and glazing work (4)
- Excavation work (4)
- Wrecking and demolition work (1)
- Special trade contractors, nec (72)
