Since the adoption of the 2010 edition of the NFPA 72 code, compliance to minimum signal levels has been a requirement to obtain a Certificate of Occupancy for all new buildings.
The NFPA, as well as the FCC code, gives to the various Authorities Having Jurisdiction (AHJs) full power to determine or change these requirements. As a consequence, the compliance requirements can be different in each jurisdiction.
Unfortunately, the need to comply with many different requirements often causes costly delays or change orders
It is extremely important to choose a vendor that understands the requirements in the jurisdiction where your building is being erected or completed.