- Plumbing, heating, air-conditioning (9)
- Painting and paper hanging (2)
- Electrical work (3)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (2)
- Structural steel erection (1)
- Excavation work (3)
- Special trade contractors, nec (5)
