- Plumbing, heating, air-conditioning (15)
- Painting and paper hanging (1)
- Electrical work (9)
- Carpentry work (4)
- Floor laying and floor work, nec (1)
- Roofing, siding, and sheetmetal work (5)
- Concrete work (2)
- Excavation work (7)
- Wrecking and demolition work (1)
- Special trade contractors, nec (5)
