Possible NAICS Codes
236220 – Commercial and Institutional Building Construction
237310 – Highway, Street, and Bridge Construction
237990 – Other Heavy and Civil Engineering Construction
238220 – Plumbing, Heating, and Air-Conditioning Contractors
237110 – Water and Sewer Line and Related Structures Construction
238190 – Other Foundation, Structure, and Building Exterior Contractors
561210 – Facilities Support Services
561612 – Security Guards and Patrol Services
811210 – Electronic and Precision Equipment Repair and Maintenance
813312 – Environment, Conservation and Wildlife Organizations