Demolition. If a building or structure nonconforming by dimension is involuntarily demolished, destroyed, or damaged; it may, by right, be repaired or rebuilt to the same size and dimension as previously existed. If a building or structure nonconforming by dimension is voluntarily demolished or destroyed, it shall not be reconstructed, unless it conforms with the dimensional regulations of the zone in which it is located. Provided however, that the Zoning Board may grant a special use permit to allow any such building or structure, whether voluntarily or involuntarily demolished, damaged or destroyed, to be reconstructed not in conformance with the dimensional regulations of the zone in which it is located, if the Board finds that:
1. In the case of voluntary demolition or destruction, the owner has applied to the Board prior to demolition, and demolition has not yet taken place; and
2. In either case, the new building or structure will not be more than 50% larger than the existing building or structure; and
3. In either case, the nonconforming dimensional aspects of the new building or structure shall be of no greater impact on the surrounding neighborhood than those of the original building or structure.