§ 151.15  PERMITS REQUIRED.
   Except as provided in § 151.17, it shall be unlawful for any person to erect, relocate, structurally alter, reconstruct or substantially repair or change within the city, any sign or other advertising structure.
   (A)   Reconstructing signs.
      (1)   No sign heretofore approved and erected shall be substantially repaired, altered or moved, nor shall any sign, or any substantial part thereof, which is blown down or destroyed, be re-erected, reconstructed or rebuilt unless it is made to comply with all applicable requirements of this chapter.
      (2)   For the purpose of this section, shall refer to:
         (a)   Any change in copy face in excess of 60% of the existing sign; and
         (b)   Or actual repairs made (not designed to bring the sign within compliance), the test being the actual cost of any such repair. Such cost of repair, if in excess of 25% of the current cost of the sign, shall be sufficient for the purpose of this chapter to qualify as a substantial repair or change.
   (B)   Relocating signs. Any sign that is moved to another location either on the same or another premises shall be considered a new sign and a permit shall be secured.