- Structural steel erection (63)
- Glass and glazing work (102)
- Excavation work (922)
- Wrecking and demolition work (55)
- Installing building equipment (85)
- Special trade contractors, nec (1656)
- Athletic and recreation facilities construction (36)
- Coating, caulking, and weather, water, and fireproofing (16)
- Service station equipment (1)
- Rigging and scaffolding (6)
- Exterior cleaning, including sandblasting (5)
- Home/office interiors finishing, furnishing and remodeling (36)
- Decontamination services (4)
- Building site preparation (3)
