(a) The Service Supervisor shall cause to be posted at each entrance to an unsafe building a notice that reads as follows:
"DO NOT ENTER. UNSAFE TO OCCUPY. CITY OF MENTOR-ON-THE-LAKE, OHIO. "
Such notice shall remain posted until the required repairs are made or demolition is completed.
(b) No person shall remove such notice without the permission of the Supervisor, and no person shall enter the building except for the purpose of making the required repairs or of demolishing the same.