- Structural steel erection (20)
- Glass and glazing work (20)
- Excavation work (144)
- Wrecking and demolition work (23)
- Installing building equipment (21)
- Special trade contractors, nec (682)
- Athletic and recreation facilities construction (9)
- Coating, caulking, and weather, water, and fireproofing (7)
- Service station equipment (1)
- Rigging and scaffolding (2)
- Exterior cleaning, including sandblasting (3)
- Home/office interiors finishing, furnishing and remodeling (10)
- Decontamination services (1)
- Building site preparation (10)
