No building shall be erected and no existing building shall be moved, structurally altered, added to or enlarged, rebuilt, nor shall any land be designed, used or intended to be used for any purpose other than those included among the uses listed as permitted uses in each zone by this chapter and meeting the requirements as set forth by the Schedule, nor shall any open space contiguous to any building be encroached upon or reduced in any manner except in conformity to the yard, lot area, building location, percentage of lot coverage, off-street parking space, and such other regulations designed in the Schedule and this chapter for the zone in which each building or space is located. In the event of any such unlawful encroachment or reduction, the building shall be deemed to be in violation of the provisions of this chapter.