Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
237110 – Water and Sewer Line and Related Structures Construction
237120 – Oil and Gas Pipeline and Related Structures Construction
237990 – Other Heavy and Civil Engineering Construction
238160 – Roofing Contractors
238190 – Other Foundation, Structure, and Building Exterior Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
541990 – All Other Professional, Scientific, and Technical Services