- Plumbing, heating, air-conditioning (25)
- Painting and paper hanging (6)
- Electrical work (13)
- Masonry and other stonework (6)
- Plastering, drywall, and insulation (6)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (6)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (8)
- Concrete work (3)
- Glass and glazing work (1)
- Excavation work (1)
- Installing building equipment (2)
- Special trade contractors, nec (14)
