- Plumbing, heating, air-conditioning (13)
- Painting and paper hanging (8)
- Electrical work (3)
- Masonry and other stonework (5)
- Plastering, drywall, and insulation (1)
- Carpentry work (3)
- Roofing, siding, and sheetmetal work (9)
- Concrete work (6)
- Water well drilling (1)
- Excavation work (8)
- Special trade contractors, nec (8)
