- Plumbing, heating, air-conditioning (5)
- Painting and paper hanging (1)
- Electrical work (2)
- Masonry and other stonework (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (1)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (1)
- Excavation work (5)
- Special trade contractors, nec (4)
