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