No off-street parking shall be required for uses accessory to any institutional use specified in § 280-217 or for an accessory restaurant used primarily for students, patients, tenants or employees occupying a principal use.
In the case of accessory retail sales, restaurants
or swimming pools, the lesser parking requirement for either the accessory
use or the principal use, whichever requirement is less, shall be
reduced by 50%.
Where places of assembly, specified in § 280-218, are located on the same lot with other uses, the Zoning Board of Appeals may permit a reduction in the number of required off-street parking spaces for such places of assembly.
Where public off-street parking facilities are available,
other than off-street parking provided for a public building, the
Zoning Board of Appeals may permit a reduction in the number of required
off-street parking spaces for uses located on any lot within 600 feet
of such public parking facility.