All signs for which a permit is required shall be subject to inspection by the Building Official. Footing inspections may be required by the Building Official for all signs having footings including post type signs. All signs containing electrical wiring shall be subject to the provisions of the applicable electrical code, and the electrical components used shall bear the label of an approved testing agency. The Building Official may order the removal of any sign that is not maintained in accordance with the provisions of Section 15.24, after notice to the owner of record of the premises in which the sign is located. All signs may be re-inspected at the discretion of the Building Official.