- Plumbing, heating, air-conditioning (21)
- Painting and paper hanging (4)
- Electrical work (19)
- Terrazzo, tile, marble and mosaic work (1)
- Carpentry work (3)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (2)
- Concrete work (5)
- Water well drilling (1)
- Excavation work (4)
- Special trade contractors, nec (8)
