- Plumbing, heating, air-conditioning (34)
- Painting and paper hanging (23)
- Electrical work (16)
- Masonry and other stonework (11)
- Plastering, drywall, and insulation (22)
- Terrazzo, tile, marble and mosaic work (8)
- Carpentry work (10)
- Floor laying and floor work, nec (9)
- Roofing, siding, and sheetmetal work (15)
- Concrete work (25)
- Water well drilling (1)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (18)
- Wrecking and demolition work (1)
- Installing building equipment (1)
- Special trade contractors, nec (43)
