Answer: The city council or Board of Supervisors
Explanation: The City council are officials of the City's local Authority saddled with the responsibility of managing the affairs of the City,they are elected and are also resident of the city. Beth and Brian can report to the City council to take adequate actions where necessary.
Board of Supervisors are the body saddled with the responsibility of supervising the activities taking place within the City or county,they carry out both Executive and legislative functions for the County. Beth and Brian can easily petition the owners through the Board of Supervisors.