236115 – New Single-Family Housing Construction (exc. Operative Builders)
236116 – New Multifamily Housing Construction (exc. Operative Builders)
236117 – New Housing Operative Builders
236118 – Residential Remodelers
236210 – Industrial Building Construction
236220 – Commercial and Institutional Building Construction (PRIMARY)
237110 – Water and Sewer Line and Related Structures Construction
237990 – Other Heavy and Civil Engineering Construction
238110 – Poured Concrete Foundation and Structure Contractors
238120 – Structural Steel and Precast Concrete Contractors
238130 – Framing Contractors
238140 – Masonry Contractors
238150 – Glass and Glazing Contractors
238160 – Roofing Contractors
238170 – Siding Contractors
238190 – Other Foundation, Structure, and Building Exterior Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
238220 – Plumbing, Heating, and Air-Conditioning Contractors
238290 – Other Building Equipment Contractors
238310 – Drywall and Insulation Contractors
238320 – Painting and Wall Covering Contractors
238330 – Flooring Contractors
238340 – Tile and Terrazzo Contractors
238350 – Finish Carpentry Contractors
238390 – Other Building Finishing Contractors
238910 – Site Preparation Contractors
238990 – All Other Specialty Trade Contractors