In all districts, for developments or enlargements, the City Planning Commission may authorize bulk modifications, other than floor area ratio, to be made in conjunction with a transfer of development rights from landmark buildings or other structures certified pursuant to Section 75-42 (Transfer of Development Rights From Landmarks), provided the Commission determines that the conditions and limitations set forth in paragraph (a) and the findings set forth in paragraph (b) of this Section are met:

1. Conditions and limitations
   
   Where maximum building height limitations apply, modifications to the maximum permitted building height shall not result in an increase that exceeds 25 percent of the maximum building height as set forth in applicable district regulations.
2. Findings
   
   The Commission shall find that:
   1. the proposed modifications will not unduly obstruct access to light and air to adjoining properties or streets;
   2. the proposed scale and placement of the development or enlargement relates harmoniously with the surrounding area; and
   3. the requested modification is the least amount necessary to reasonably accommodate such transferred development rights.

The Commission may prescribe appropriate conditions and safeguards to minimize adverse effects on the character of the surrounding area.