Possible NAICS Codes
236210 – Industrial Building Construction
236220 – Commercial and Institutional Building Construction
561210 – Facilities Support Services
336611 – Ship Building and Repairing
237990 – Other Heavy and Civil Engineering Construction
238220 – Plumbing, Heating, and Air-Conditioning Contractors
237110 – Water and Sewer Line and Related Structures Construction
238160 – Roofing Contractors
238210 – Electrical Contractors and Other Wiring Installation Contractors
238120 – Structural Steel and Precast Concrete Contractors