§ 190-156. Alterations and repairs.

A. 

A nonconforming building or structure for other than residential purposes may not be reconstructed or structurally altered during its life to an extent that such alterations exceed in aggregate cost 25% of the City Assessor appraised value of the building or structure, exclusive of the value of the land, unless said building or structure is changed to a conforming use. A nonconforming building or structure containing residential use may be altered in any way to improve interior liveability, provided that no structural alteration shall be made which would increase the nonconformity with regard to the number of housing units or the bulk of the building or structure.

B. 

Normal maintenance repairs and incidental alteration of a building or structure containing a nonconforming use shall be permitted, provided that said repairs and alterations do not extend the volume or area of space occupied by the nonconforming use.