Zoning permit required. No fence or wall, except as provided for in Subsection C following, shall hereinafter be located, moved, reconstructed, extended, enlarged, converted, or structurally altered without a zoning permit and without being in conformity with all the structural requirements of local and state building codes; provided, however, that routine fence and wall maintenance and repair of parts thereof shall not, standing alone, be considered an alteration of the fence or wall requiring a zoning permit.