No sign shall be placed further than seven linear feet from the foundation of the principal residential structure, unless the Building Official renders a determination that, because of the irregular size or shape of the lot or location of the structure, the sign may be placed otherwise. Signage may not be affixed to the interior windows or exterior surface of any building in the districts, including exterior decks and roofing. Signage may not be affixed or attached to utility poles, traffic signs, trees, or any other structure. In no event shall signage be placed within the right-of-way of a street or roadway.