- Plumbing, heating, air-conditioning (27)
- Painting and paper hanging (6)
- Electrical work (6)
- Masonry and other stonework (5)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (5)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (8)
- Concrete work (7)
- Excavation work (15)
- Wrecking and demolition work (1)
- Special trade contractors, nec (13)
