- Structural steel erection (64)
- Glass and glazing work (52)
- Excavation work (901)
- Wrecking and demolition work (40)
- Installing building equipment (27)
- Special trade contractors, nec (1203)
- Athletic and recreation facilities construction (18)
- Coating, caulking, and weather, water, and fireproofing (11)
- Service station equipment (1)
- Rigging and scaffolding (7)
- Exterior cleaning, including sandblasting (2)
- Home/office interiors finishing, furnishing and remodeling (34)
- Decontamination services (5)
- Building site preparation (6)
