- Plumbing, heating, air-conditioning (18)
- Painting and paper hanging (2)
- Electrical work (11)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (8)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (6)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (4)
- Concrete work (12)
- Water well drilling (7)
- Glass and glazing work (2)
- Excavation work (5)
- Special trade contractors, nec (18)
