I have a home that I got from my parents when they passed 20 plus years ago. The house has been refinanced many times since and recently remodeled (all permits in order). The city is now claiming I must remove a "driveway extension" that my father did 30 years ago. He removed a flower bed and poured concrete. They state that it must be returned to its original configuration in 1967. A portion of the existing flower bed was included in the new plans and ok'd. The driveway was not changed in the recent construction so no plans on it. Can they make me change things done by the previous owner if it is not a building and safety hazard?