- Plumbing, heating, air-conditioning (6)
- Painting and paper hanging (5)
- Electrical work (4)
- Plastering, drywall, and insulation (2)
- Carpentry work (2)
- Roofing, siding, and sheetmetal work (1)
- Concrete work (1)
- Water well drilling (1)
- Excavation work (1)
- Special trade contractors, nec (1)
