- Plumbing, heating, air-conditioning (14)
- Painting and paper hanging (2)
- Electrical work (6)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (2)
- Carpentry work (6)
- Roofing, siding, and sheetmetal work (1)
- Concrete work (4)
- Excavation work (5)
- Special trade contractors, nec (10)