In Special Enhanced Commercial Districts, the special transparency provisions indicated in the table in Section 132-13 (Applicability of Special Use, Transparency, Street Wall and Parking Regulations) shall apply to developments and to buildings enlarged on the ground floor level, where such ground floor level fronts on a designated commercial street, except that such provisions shall not apply:

(a)        to zoning lots in Commercial Districts with a width of less than 20 feet, as measured along the street line of a designated commercial street, provided such zoning lots existed on:

(1)        November 29, 2011, for Special Enhanced Commercial District 1;

(2)        June 28, 2012, for Special Enhanced Commercial Districts 2 and 3;

(3)        October 11, 2012, for Special Enhanced Commercial District 4; and

(4)        April 20, 2016, for Special Enhanced Commercial Districts 5 and 6;

(b)        in Special Enhanced Commercial Districts 1, 4, 5 and 6, to buildings in Residence Districts where the ground floor level contains dwelling units.