- Plumbing, heating, air-conditioning (11)
- Painting and paper hanging (3)
- Electrical work (6)
- Masonry and other stonework (1)
- Roofing, siding, and sheetmetal work (4)
- Water well drilling (1)
- Excavation work (1)
- Wrecking and demolition work (1)
- Installing building equipment (1)
- Special trade contractors, nec (6)
