District designations indicated on zoning maps do not apply to public parks, except as set forth in Section 105-91 (Special District Designation on Public Parks) and in paragraph (c) of Section 62-351 (Special floor area regulations). In the event that a public park or portion thereof is sold, transferred, exchanged or in any other manner relinquished from the control of the Commissioner of Parks and Recreation, no building permit shall be issued, nor shall any use be permitted on such former public park or portion thereof, until a zoning amendment designating a zoning district therefor has been adopted by the City Planning Commission and has become effective after submission to the City Council in accordance with the provisions of Section 71-10 (PROCEDURE FOR AMENDMENTS).