Where a development or enlargement contains a combination of uses for which parking regulations are set forth in Sections 13-11 (Permitted Parking for Residences) and 13-12 (Permitted Parking for Non-Residential Uses), the number of accessory off-street parking spaces for all such uses shall not exceed the number of spaces permitted for each use in accordance with the provisions of such Sections. However, in no event shall the maximum number exceed 225 accessory off-street parking spaces.