• 236210 - Industrial Building Construction

• 236220 - Commercial and Institutional Building Construction

• 237110 - Water and Sewer Line and Related Structures Construction

• 237120 - Oil and Gas Pipeline and Related Structures Construction

• 237130 - Power and Communication Line and Related Structures Construction

• 237310 - Highway, Street, and Bridge 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

• 332311 - Prefabricated Metal Building and Component Manufacturing

• 541611 - Administration Management and General Management Consulting Services

• 541618 - Other Management Consulting Services

• 541620 - Environmental Consulting Services

• 541720 - Research and Development in the Social Sciences and Humanities

• 541990 - All Other Professional, Scientific and Technical Services

• 561410 - Document Preparation Services