- Plumbing, heating, air-conditioning (45)
- Painting and paper hanging (20)
- Electrical work (23)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (14)
- Terrazzo, tile, marble and mosaic work (3)
- Carpentry work (8)
- Floor laying and floor work, nec (8)
- Roofing, siding, and sheetmetal work (16)
- Concrete work (13)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (2)
- Installing building equipment (2)
- Special trade contractors, nec (28)
