In exercising the above mentioned power the board may, in conformity with this Subpart, reverse or affirm, wholly or partly, or may modify the order, requirement, decision or determination appealed from, and may make such order, requirement, decision or determination as ought to be made, and to that end it shall have all the powers of the officer from whom the appeal is taken. The concurring vote of four members of the board shall be necessary to reverse any order, requirement, decision or determination of any administrative official, or to decide in favor of the applicant on any matter upon which it is required to pass under any ordinance, or to effect any variation in the ordinance.
La. R.S. § 33:140.157