As a condition to the issuance by the Department of Buildings of an excavation or building permit for a development or enlargement on a zoning lot requiring a mandatory subway improvement:
(a) the developer shall have submitted to the Chairperson of the City Planning Commission:
(1) written notice of its intention to develop or enlarge on a zoning lot in the Court Square Subdistrict, the floor area of such development or enlargement, and the mandatory subway improvements which the developer shall construct;
(2) drawings, including, but not limited to, plans, sections, elevations, three-dimensional projections or other drawings deemed necessary or relevant by the Chairperson, for the mandatory subway improvements within the designated zoning lot; and
(3) waivers, consents, agreements or other legal instruments obligating the developer, its heirs and devisees, successors and assigns, to develop its property in accordance with the Subdistrict Plan and the provisions of this Chapter; and
(b) within 90 days of such submission by the developer, the Chairperson of the City Planning Commission shall certify to the Department of Buildings and the developer receipt of the aforesaid documents and the developer's compliance, or non-compliance, with the requirements of the Subdistrict Plan.