Whenever any building shall project into a setback area established under this Zoning Ordinance of the Village of Farmingdale and such building shall be destroyed by fire or other casualty to the extent of not more than 50% of its value and that portion of the building extending into the setback area shall be destroyed to the extent of not more than 50% of its value, such building may be reconstructed and used in the same manner as existed prior to destruction by fire or other casualty.