Handicapped van check over

I am a paraplegic, who is a resident of Charlotte, NC. I am interested in buying a fully converted van for handicapped use. This used van is in Villa Park, Il. The address where the van is:

155 E. North Ave. Villa Park, Il. 60181. Can you please recommend a vehicle service company where I can take the van to have it checked for mechanical soundness (not the conversion, but brakes, motor, fuel lines, etc.).

Thank you.