Damage or Destruction. If a nonconforming structure is partially or completely damaged or destroyed by fire, collapse, explosion or other disaster, it may be reconstructed or repaired provided that the reconstruction and repair activities for the structure commence within one year of the date that the original structure was damaged or destroyed, and are completed within two years of the date that the original structure was damaged or destroyed. However, reconstruction or repair shall not make the structure more nonconforming, in any respect, than it was prior to damage or destruction.