Each exterior door, window and opening of any vacant
dwelling shall be firmly secured and locked. Should a structure become accessible
and/or a nuisance by virtue of having windows or doors repeatedly left opened
and/or unlocked, it shall be firmly secured by covering the opening with plywood
or other material. No structure shall be permitted to be boarded up for any
period of time in excess of six months unless fully justified by the owner,
in writing, to the Housing Official stating why and for what period of time
the structure should be permitted to remain boarded up.