Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
561210 – Facilities Support Services
541513 – Computer Facilities Management Services
561790 – Other Services to Buildings and Dwellings
238160 – Roofing Contractors
238220 – Plumbing, Heating, and Air-Conditioning Contractors
811490 – Other Personal and Household Goods Repair and Maintenance
517810 – All Other Telecommunications
811310 – Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
238210 – Electrical Contractors and Other Wiring Installation Contractors