Nursing homes or convalescent centers shall not exceed 75,000 square feet, inclusive of all buildings and support facilities, with no building being larger than 70,000 square feet. Facilities over 65,000 square feet shall have at least six sustainable design initiative points, as defined in Article XXIA, governing the GMU District. For every 10,000 square feet over 65,000 square feet, the applicant shall provide one additional sustainable development point.