- Plumbing, heating, air-conditioning (14)
- Painting and paper hanging (7)
- Electrical work (6)
- Masonry and other stonework (3)
- Plastering, drywall, and insulation (3)
- Carpentry work (2)
- Roofing, siding, and sheetmetal work (2)
- Concrete work (2)
- Glass and glazing work (1)
- Excavation work (4)
- Installing building equipment (1)
- Special trade contractors, nec (4)
