- Plumbing, heating, air-conditioning (7)
- Painting and paper hanging (8)
- Electrical work (8)
- Plastering, drywall, and insulation (2)
- Carpentry work (5)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (2)
- Concrete work (2)
- Glass and glazing work (1)
- Excavation work (4)
- Special trade contractors, nec (2)
