- Plumbing, heating, air-conditioning (19)
- Painting and paper hanging (25)
- Electrical work (20)
- Masonry and other stonework (2)
- Plastering, drywall, and insulation (10)
- Terrazzo, tile, marble and mosaic work (2)
- Carpentry work (10)
- Floor laying and floor work, nec (7)
- Roofing, siding, and sheetmetal work (15)
- Concrete work (10)
- Water well drilling (1)
- Glass and glazing work (1)
- Excavation work (5)
- Special trade contractors, nec (30)
