The requirements set forth in Section 25-23 (Requirements Where Group Parking Facilities Are Provided) may be reduced or waived  for income-restricted housing units, affordable independent residences for seniors, or other government-assisted dwelling units in accordance with the provisions of this Section, inclusive. For the purposes of this Section, not more than one dwelling unit reserved for occupancy by a superintendent in a building otherwise comprised of income-restricted housing units shall also be considered an income-restricted housing unit.

In addition, the Board of Standards and Appeals may waive or modify the requirements set forth in Section 25-23 for government-assisted dwelling units, in accordance with the provisions of Section 73-435 (Reduction of parking spaces for other government-assisted dwelling units).