Definition: open space ratio (General Definition)
The "open space ratio" of a zoning lot is the number of square feet of open space on the zoning lot , expressed as a percentage of the floor area on that zoning lot . (For example, if for a particular zoning lot an open space ratio of 20 is required, 20,000 square feet of floor area in the building would necessitate 4,000 square feet of open space on the zoning lot ; or, if 6,000 square feet of lot area were in open space , 30,000 square feet of floor area could be on that zoning lot .) Each square foot of open space per 100 square feet of floor area is referred to as one point.