Possible NAICS Codes
541330 – Engineering Services
236220 – Commercial and Institutional Building Construction
541310 – Architectural Services
541370 – Surveying and Mapping (except Geophysical) Services
561210 – Facilities Support Services
237130 – Power and Communication Line and Related Structures Construction
238140 – Masonry Contractors
541380 – Testing Laboratories and Services
541519 – Other Computer Related Services
541620 – Environmental Consulting Services