Does the city have the authority to force you to move the home? I’d ask them to explain on what basis they can enforce such action. In the cities I deal with, only one would make an issue over setting up a home. They require any mobile home moved into the city to be 15 years or newer; otherwise, they will not give a CO.
In NC I’ve had several homes that I’ve moved and set up with no title and VIN number that I could find, and it was never an issue. When the city asked me for a VIN, or where it came from, if I didn’t have the information they didn’t force the issue.