- Plumbing, heating, air-conditioning (50)
- Painting and paper hanging (17)
- Electrical work (46)
- Masonry and other stonework (12)
- Plastering, drywall, and insulation (9)
- Terrazzo, tile, marble and mosaic work (8)
- Carpentry work (10)
- Floor laying and floor work, nec (12)
- Roofing, siding, and sheetmetal work (21)
- Concrete work (14)
- Water well drilling (4)
- Structural steel erection (3)
- Glass and glazing work (8)
- Excavation work (37)
- Wrecking and demolition work (4)
- Installing building equipment (7)
- Special trade contractors, nec (32)