- Plumbing, heating, air-conditioning (10)
- Painting and paper hanging (1)
- Electrical work (4)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (4)
- Roofing, siding, and sheetmetal work (5)
- Concrete work (3)
- Excavation work (4)
- Wrecking and demolition work (1)
- Special trade contractors, nec (11)
