- Plumbing, heating, air-conditioning (11)
- Painting and paper hanging (5)
- Electrical work (7)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (5)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (1)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (4)
- Concrete work (4)
- Glass and glazing work (1)
- Excavation work (8)
- Installing building equipment (1)
- Special trade contractors, nec (19)
