What will happen during an on-site investigation when the automotive facilities inspector arrives?
The AFI will be checking that you have permanently mounted signs visible from the street and if not visible they will deny your application; and you will need proof of identification for everyone named on the application with a driver license or government issued photo ID.
What is required to become a licensed Inspection Station in the state of New York?
If you want to become a licensed Inspection Station by the DMV in New York state then you should consult the DMV Commissioner's Motor Vehicle Inspection Regulations.