Where a lawful structure exists at the effective date of adoption or amendment of this ordinance that could not be built under the terms of this ordinance by reason of restrictions on area, lot coverage, height, yards, its location on the lot, or other requirements concerning the structure, such structure may be continued so long as it remains otherwise lawful, subject to the following provisions.
(A) No such non-conforming structure may be enlarged or altered in a way which increases its non-conformity, but any structure or portion thereof may be altered to decrease its non-conformity.
(B) Should such non-conforming structure or non-conforming portion of structure be destroyed by any means to an extent of more than 50 percent of its physical structure, it shall not be reconstructed except in conformity with the provisions of this ordinance.
(C) Should such structure be moved for any reason for any distance whatever, it shall thereafter conform to the regulations for the district in which it is located after it is moved.
(Prior Code, Art. 21, § 21-108.4)