- Plumbing, heating, air-conditioning (60)
- Painting and paper hanging (26)
- Electrical work (26)
- Masonry and other stonework (10)
- Plastering, drywall, and insulation (3)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (18)
- Floor laying and floor work, nec (8)
- Roofing, siding, and sheetmetal work (18)
- Concrete work (14)
- Structural steel erection (4)
- Glass and glazing work (2)
- Excavation work (9)
- Wrecking and demolition work (2)
- Installing building equipment (2)
- Special trade contractors, nec (27)
