- Plumbing, heating, air-conditioning (26)
- Painting and paper hanging (5)
- Electrical work (19)
- Masonry and other stonework (5)
- Plastering, drywall, and insulation (4)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (6)
- Floor laying and floor work, nec (6)
- Roofing, siding, and sheetmetal work (9)
- Concrete work (9)
- Glass and glazing work (1)
- Excavation work (7)
- Wrecking and demolition work (1)
- Special trade contractors, nec (19)
