The Department of City Planning (DCP) has zoning district guides.
Medium and High Density Zoned Districts
Planting regulations also apply to medium- and high-density contextual R6 through R10 districts and where the optional is utilized in R6 through R10 districts.
When buildings are set back from the street in these zoning districts, the entire area in the front of the building must be planted, except for the entrances/exits to the building or driveways.