Whenever the Fire Chief, the State Fire Marshal or any of their agents finds that any building used as a dwelling, for business purposes or for any other purpose within the City is unsafe for occupancy by reason of not having the necessary construction or location to make it safe against fire hazards or that the same in any measure does not comply with the City or State regulations pertaining to fire hazards, they shall order the same condemned and removed. On an order of condemnation from any of such officials or their agents, the property shall be immediately vacated and shall not be reoccupied until the same has been repaired or rebuilt in compliance with rules and regulations regarding the repair and construction of buildings under the orders of such officials.