No order of the Board of Zoning Appeals permitting the erection or alteration of a building or the use of a building or premises shall be valid for a period longer than six months, unless a building permit for such erection or alteration is obtained and the work is started within such period, or where no erection or alteration is necessary, the permitted use is established within such period.
(Ord. 94-84. Passed 7-9-84.)