- Plumbing, heating, air-conditioning (9)
- Painting and paper hanging (1)
- Electrical work (4)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (2)
- Concrete work (1)
- Excavation work (1)
- Special trade contractors, nec (3)
