- Plumbing, heating, air-conditioning (11)
- Painting and paper hanging (8)
- Electrical work (6)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (6)
- Carpentry work (3)
- Roofing, siding, and sheetmetal work (3)
- Concrete work (3)
- Excavation work (7)
- Special trade contractors, nec (8)
