Density refers to the number of Dwelling Units permitted in the various zoning districts. This number is specified in the Zoning Control Tables for the district in which the lot is located.

How to calculate the number of units allowed for my property?

In most of the districts there is a maximum number of units allowed irrespectively the size of your lot.

In some districts you'd have to calculate the number of units based on the size of the lot. For instance, if you have a 2,000 sqft lot and the zoning district allows for 1 unit/1,000 sqft, that means you could have 2 units on your lot. In some cases, the calculation of the maximum number of units may not give you a whole number or integer. The remaining fraction of one-half or more of the minimum of lot area per Dwelling Unit shall is adjusted upward to the next higher whole number of Dwelling Units.

Other districts your lot may have no density limit. The actual maximum number of units derives from the size of the envelope of the building. This size is dictated by a max. height, bulk, setbacks, open space, exposure and unit mix as well as other design guidelines.

CityStructure report gives you the maximum number of units you may be allowed to have on your lot.