- Structural steel erection (61)
- Glass and glazing work (22)
- Excavation work (9)
- Wrecking and demolition work (13)
- Installing building equipment (36)
- Special trade contractors, nec (218)
- Athletic and recreation facilities construction (7)
- Coating, caulking, and weather, water, and fireproofing (1)
- Service station equipment (1)
- Rigging and scaffolding (2)
- Home/office interiors finishing, furnishing and remodeling (22)
- Decontamination services (2)
- Building site preparation (8)
