73-453 - For non-residential uses in Commercial or Manufacturing Districts LAST AMENDED 6/27/1963 For non-#residential uses#, other than #non-profit hospital staff dwellings#, the Board of Standards and Appeals may extend the maximum permitted radius for off-site parking spaces located in #Commercial# or #Manufacturing Districts#, as specified in Sections 25-53 (Off-site Spaces for Permitted Non-residential Uses), 36-43 (Off-site Spaces for Commercial or Community Facility Uses) or 44-32 (Off-site Spaces for All Permitted Uses), from 600 to 1,200 feet, whenever the Board finds: (a) that the required #accessory# off-street parking spaces cannot reasonably be provided on the #zoning lot# because of physical conditions including irregularity, narrowness or shallowness of lot size or shape, or exceptional topographical or other physical conditions; and (b) that, within 600 feet of a boundary of the #zoning lot#, there is substantial difficulty in obtaining a site of sufficient size to accommodate the required #accessory# off-street parking spaces because such sites are occupied by substantial improvements.