- Plumbing, heating, air-conditioning (12)
- Painting and paper hanging (4)
- Electrical work (3)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (3)
- Carpentry work (6)
- Roofing, siding, and sheetmetal work (3)
- Concrete work (2)
- Excavation work (4)
- Special trade contractors, nec (7)
