This means that you'll be able to search for NAICS codes directly (if that's your jam). We'll do the math; let's make better data on public procurement together.
Possible NAICS Codes
236210 – Industrial Building Construction
236220 – Commercial and Institutional Building Construction
611110 – Elementary and Secondary Schools
541350 – Building Inspection Services
238990 – All Other Specialty Trade Contractors
238110 – Poured Concrete Foundation and Structure Contractors