(A) The Board of Adjustment shall have the following powers:
(1) To hear and decide appeals when it is alleged that there is an error in any order, requirement, decision, or determination made by the Planning or Zoning Commission or the Building Officials; and
(2) To hear, upon appeal in specific cases, such variances from the terms of the zoning ordinances as will not be contrary to public interest where, owing to a special condition or conditions, a literal enforcement of the provisions of such ordinances will result in unnecessary hardships and so that the spirit of said zoning ordinances shall be observed and substantial justice done.
(B) In exercising the above mentioned powers, such Board may, in uniformity with the provisions of this act, reverse or affirm (wholly or partly) or modify the order, requirement, decision, or determination as ought to be made. The concurring vote of four members of said Board of Adjustment shall be necessary to reverse any order, requirement, decision, or determination of any such administrative official or of said Planning or Zoning Commission or to decide in favor of the applicant on any matter upon which it is required to vote under any such ordinance or to effect any variation in such ordinance.
(C) Where there are particular difficulties or unnecessary hardships in the way of carrying out the strict letter of the provisions of the zoning ordinances, said Board of Adjustment shall have the power, in a specific case, to vary any such provision in harmony with the general purpose and intent so that the public health, safety, best interest, orderly growth, and general welfare of said town may be secured and substantial justice done.
(Prior Code, § 18-11)