NAICS Codes

237310 – (Primary) Highway, Street, and Bridge Construction

236220 – (Secondary) Commercial and Institutional Construction

237110 – Water and Sewer line Related Structures Construction Other Heavy and Civil Engineering Construction

237990 – Other Heavy and Civil Engineering Construction

238220 – Plumbing, Heating and Air-Conditioning Contractors

541330 – Engineering Services

541511 – Custom Computer Programming Services

541512 – Computer Systems Design Services

561612 – Security Guards and Patrol Services

561621 – Security Systems Services