- Plumbing, heating, air-conditioning (6)
- Painting and paper hanging (3)
- Electrical work (3)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (4)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (6)
- Floor laying and floor work, nec (3)
- Roofing, siding, and sheetmetal work (2)
- Concrete work (2)
- Water well drilling (2)
- Excavation work (1)
- Special trade contractors, nec (11)
