- Plumbing, heating, air-conditioning (13)
- Painting and paper hanging (7)
- Electrical work (11)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (2)
- Terrazzo, tile, marble and mosaic work (3)
- Carpentry work (9)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (3)
- Concrete work (8)
- Structural steel erection (1)
- Excavation work (6)
- Wrecking and demolition work (1)
- Special trade contractors, nec (18)
