- Plumbing, heating, air-conditioning (21)
- Painting and paper hanging (5)
- Electrical work (15)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (6)
- Terrazzo, tile, marble and mosaic work (6)
- Carpentry work (1)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (5)
- Concrete work (1)
- Water well drilling (1)
- Glass and glazing work (1)
- Excavation work (5)
- Special trade contractors, nec (9)
