Inclusionary zoning (IZ), also known as inclusionary housing, refers to municipal and county planning ordinances that require a given share of new construction to be affordable by people with low to moderate incomes. The term inclusionary zoning indicates that these ordinances seek to counter exclusionary zoning practices, which aim to exclude low-cost housing from a municipality through the zoning code. There are variations among different inclusionary zoning programs. Firstly, they can be mandatory or voluntary. Though voluntary programs exist, the great majority has been built as a result of local mandatory programmes requiring developers to include the affordable units in their developments. There are also variations among the set-aside requirements, affordability levels coupled with t