The Chief Building Official shall furnish a copy of all unsafe building orders to the public utilities serving that building or structure which may be affected by the condition responsible for said order, and shall mark thereon a request that service being furnished the building or structure by said utility be discontinued when in his opinion the continuance of said service will constitute a hazard to the public. On receipt of said copy of notice and the request thereof, any person, firm, association, and the like supplying such service shall promptly discontinue its supply at the meter in the designated portion of the building or structure. It shall be unlawful for such person, firm, association, and the like thereafter to continue such service or to restore that same until furnished with a copy of the certificate of approval from the Chief Building Official certifying that an inspection has been made, that the hazardous conditions have been corrected, and that the affected service installation has been brought into substantial compliance with the requirements of this Building Code.
(‘74 Code, § 150.56)