A railroad right-of-way that would otherwise be considered a block boundary may not be included in the lot area of a zoning lot less than one and a half acres unless the Chairperson of the City Planning Commission certifies to the Department of Buildings that:

1. a site plan has been submitted showing:
   1. the total lot area, including any railroad right-of-way or platform over a railroad right-of-way; and
   2. that the zoning lot has direct access to one or more streets;
2. the affected railroad entity or entities have indicated in writing that the proposed development or enlargement will not interfere with current or future railroad operations.

Certification by the Chairperson shall be a precondition to the issuance of any building permit, including any foundation or alteration permit, for any development or enlargement under this Section.