In the districts indicated, the Board of Standards and Appeals may permit a reduction in the number of accessory off-street parking spaces required by the provisions of Section 36-21 or 44-21 (General Provisions) for ambulatory diagnostic or treatment facilities listed in Use Group 4 and uses in parking requirement category B1 in Use Group 6, 7, 8, 9, 10, 11, 14 or 16 to the applicable number of spaces specified in the table set forth at the end of this Section, provided that the Board finds that occupancy by ambulatory diagnostic or treatment facilities listed in Use Group 4 or uses in parking category B1 is contemplated in good faith on the basis of evidence submitted by the applicant. In such a case the Board shall require that the certificate of occupancy issued for the building within which such use is located shall state that no certificate shall thereafter be issued if the use is changed to a use listed in parking category B unless additional accessory off-street parking spaces sufficient to meet such requirements are provided on the site or within the permitted off-site radius.

REDUCED ACCESSORY OFF-STREET PARKING SPACES REQUIRED FOR AMBULATORY DIAGNOSTIC OR TREATMENT FACILITIES LISTED IN USE GROUP 4 AND COMMERCIAL USES IN PARKING REQUIREMENT CATEGORY B1

^*        For ambulatory diagnostic or treatment facilities listed in Use Group 4, parking spaces required per number of square feet of floor area or cellar space, except cellar space used for storage