- Plumbing, heating, air-conditioning (8)
- Painting and paper hanging (4)
- Electrical work (23)
- Masonry and other stonework (4)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (4)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (9)
- Concrete work (7)
- Glass and glazing work (2)
- Excavation work (4)
- Installing building equipment (2)
- Special trade contractors, nec (38)
