- Plumbing, heating, air-conditioning (10)
- Painting and paper hanging (6)
- Electrical work (10)
- Masonry and other stonework (6)
- Plastering, drywall, and insulation (6)
- Carpentry work (6)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (6)
- Concrete work (10)
- Structural steel erection (1)
- Glass and glazing work (1)
- Excavation work (7)
- Special trade contractors, nec (7)
