- Plumbing, heating, air-conditioning (5)
- Painting and paper hanging (3)
- Electrical work (4)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (2)
- Carpentry work (5)
- Roofing, siding, and sheetmetal work (1)
- Concrete work (1)
- Water well drilling (2)
- Excavation work (3)
- Special trade contractors, nec (1)
