- Plumbing, heating, air-conditioning (9)
- Painting and paper hanging (6)
- Electrical work (6)
- Masonry and other stonework (1)
- Plastering, drywall, and insulation (1)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (7)
- Roofing, siding, and sheetmetal work (4)
- Concrete work (9)
- Water well drilling (1)
- Excavation work (4)
- Special trade contractors, nec (5)
