- Plumbing, heating, air-conditioning (11)
- Painting and paper hanging (1)
- Electrical work (3)
- Masonry and other stonework (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (5)
- Roofing, siding, and sheetmetal work (8)
- Concrete work (1)
- Structural steel erection (1)
- Glass and glazing work (1)
- Special trade contractors, nec (7)
