In multifamily districts, including R-2A, R-3 and
RSP-1 Districts, under the same standards of density and development
permitted by this chapter, the Planning Board, after obtaining a resolution
of authorization from the Town Board, may approve cohesive development
of individual or multiple sites to allow row houses (townhouses, patio
houses, etc.) of not more than three stories and to allow apartments
for either rental, sale, cooperative or condominium use, to a height
of not more than six stories. These standards may be applied, provided
that the open land resulting from such provision is reserved in open
space, and, further, provided that the total plan of development (including
the architectural treatment of the buildings, building locations,
parking layout, provisions for developed usable open space, parking
egress and ingress and appurtenant facilities proposed) is constructed
in accordance with a site development plan approved by the Planning
Board.