If, after notice and hearing, the governing body determines that the structure under consideration is dangerous, unsafe or unfit for human use or habitation, it shall state in writing its findings of fact in support of such determination and shall cause the resolution to be published once in the official city newspaper and a copy mailed to the owners, agents, lienholders of record and occupants in the same manner provided for the notice of hearing. The resolution shall fix a reasonable time within which the repair or removal of such structure shall be commenced and a statement that if the owner of such structure fails to commence the repair or removal of such structure within the time stated or fails to diligently prosecute the same until the work is completed, the governing body will cause the structure to be razed and removed.