This section is intended to assure that low- and moderate-income units ("affordable units") are created with controls on affordability and that low- and moderate-income households shall occupy these units. This section is also intended to ensure that any site that benefits from a rezoning, variance, or redevelopment or rehabilitation plan approved by the Borough that results in any multi-family or single-family attached residential development, including the residential portion of a mixed-use project, in any zone within Englewood Cliffs, and proposed at a density of five (5) units per acre or greater produces affordable housing at a set-aside rate of 20% regardless of whether the affordable units are for sale or for rent. This section shall apply except where inconsistent with applicable law. This requirement does not give any developer the right to any such rezoning, variance or other relief, or establish any obligation on the part of the Borough of Englewood Cliffs to grant such rezoning, variance or other relief.