- Plumbing, heating, air-conditioning (11)
- Painting and paper hanging (4)
- Electrical work (6)
- Masonry and other stonework (5)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (2)
- Roofing, siding, and sheetmetal work (5)
- Concrete work (3)
- Excavation work (5)
- Special trade contractors, nec (6)
