Prior to the start of any demolition work on any building or structure, the permittee shall have all utilities to such building or structure properly disconnected. Utility disconnection, except for building sewers, shall be performed or supervised by the proper governmental agency or utility company affected. Disconnection of sewer shall be performed in the manner required by Chapter 15.24 of this title and any other applicable section of the city code. (Prior code § 9.10.402)