In M1-5M and M1-6M Districts in Manhattan Community Districts 1, 2, 3, 4, 5 and 6, the conversion to dwelling units of non-residential buildings, or portions thereof, erected prior to December 15, 1961, shall be subject to the provisions of Article I, Chapter 5 (Residential Conversion Within Existing Buildings).

In M1-5M and M1-6M Districts, eating or drinking establishments with entertainment and a capacity of more than 200 persons or establishments of any capacity with dancing are permitted only by special permit of the Board of Standards and Appeals in accordance with Section 73-244.