Whoever violates any provision of this Business Maintenance Code, or any rule or regulation promulgated thereunder, or fails to comply therewith or with any written notice or written order issued thereunder, or whoever refuses to permit entry by the Building Commissioner or any inspector officially so designated by the Mayor, at a reasonable hour, and whoever interferes with, obstructs or hinders the Building Commissioner or any inspector officially so designated by the Mayor while attempting to make such inspection, shall be guilty of a misdemeanor of the third degree for a first offense and a misdemeanor of the first degree for a subsequent offense. Each day such violation occurs or continues shall constitute a separate offense.