Posted on September 21, 2015 by Mireya Navarro in The New York Times The New York Times, By Mireya Navarro Developers who want to build in certain areas of New York City would be required for the first time to set aside at least 25 percent of their units for lower-income residents under proposed zoning rules officially released Monday by the de Blasio administration. The requirement, known as mandatory inclusionary housing, would first be applied to East New York in Brooklyn, one of 15 areas the city has singled out for taller buildings and more density to help meet the mayor’s goal of adding 80,000 new affordable units to the city through 2024.