- Plumbing, heating, air-conditioning (4)
- Painting and paper hanging (4)
- Electrical work (1)
- Masonry and other stonework (2)
- Floor laying and floor work, nec (3)
- Roofing, siding, and sheetmetal work (1)
- Concrete work (3)
- Excavation work (6)
- Special trade contractors, nec (5)
