Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
238390 – Other Building Finishing Contractors
541990 – All Other Professional, Scientific, and Technical Services
236210 – Industrial Building Construction
238210 – Electrical Contractors and Other Wiring Installation Contractors
238220 – Plumbing, Heating, and Air-Conditioning Contractors
238160 – Roofing Contractors
541310 – Architectural Services
561210 – Facilities Support Services
921190 – Other General Government Support