A-501.1 Unlawful acts: It shall be unlawful for any person, firm or corporation to erect, construct, alter, extend, repair, remove, demolish, maintain, fail to maintain, provide, fail to provide, occupy, let to another to occupy or permit another person to occupy any structure or equipment regulated by this code or the technical codes, or cause same to be done, contrary to or in conflict with or in violation of any of the provisions of this code or the technical codes, or to fail to obey a lawful order of the code official, or to remove or deface a placard or notice posted under the provisions of this code or the technical codes.