52-22 - Structural Alterations LAST AMENDED 6/6/2024 No structural alterations shall be made in a #building or other structure# substantially occupied by a #non-conforming# #use#, except when made: (a) in order to comply with requirements of law; or (b) in order to accommodate a conforming #use#; or (c) in order to conform to the applicable district regulations on performance standards; or (d) in the course of an #enlargement# permitted under the provisions of Section 52-40 (ENLARGEMENTS OR EXTENSIONS), inclusive; or (e) in the course of an alteration to improve the energy performance of the #building or other structure#, including, but not limited to, the addition of solar energy systems, energy storage systems, or #qualifying exterior wall thickness#; (f) or except as set forth in Section 52-80 (REGULATIONS APPLYING TO NON-CONFORMING SIGNS), inclusive.