- Structural steel erection (76)
- Glass and glazing work (90)
- Excavation work (376)
- Wrecking and demolition work (43)
- Installing building equipment (35)
- Special trade contractors, nec (1360)
- Athletic and recreation facilities construction (11)
- Coating, caulking, and weather, water, and fireproofing (7)
- Service station equipment (1)
- Rigging and scaffolding (13)
- Exterior cleaning, including sandblasting (10)
- Home/office interiors finishing, furnishing and remodeling (34)
- Decontamination services (9)
- Building site preparation (2)
