- Plumbing, heating, air-conditioning (2)
- Painting and paper hanging (2)
- Masonry and other stonework (1)
- Carpentry work (2)
- Floor laying and floor work, nec (2)
- Roofing, siding, and sheetmetal work (2)
- Excavation work (1)
- Installing building equipment (1)
- Special trade contractors, nec (9)
