Enlargement, Repair, Alterations. Any non-conforming structure may be enlarged, maintained, repaired or remodeled; provided however, no such enlargement, maintenance, repair or remodeling shall either create any additional non-conformity or increase the degree of existing non-conformity of all or any part of such structure; provided further, existing mobile home parks not meeting the requirements of this Chapter shall be declared non-conforming and shall not be permitted to add spaces or make any improvements inconsistent with the terms and conditions of this Chapter.