By 1900, apartment buildings were being built on Clinton Avenue, which replaced the mansions there and on Washington Avenue by the 1920s and 40s. In addition some of the remaining mansions were converted into rooming houses in the following decades, and urban renewal, part of Robert Moses' relentless rebuilding of the city, cleared five blocks south of the Pratt Institute, destroying the brownstones there. This was followed in the 1970s by the brownstone revival, in which many of the remaining brownstones were restored. In the 2000s, the neighborhood became somewhat gentrified, with generally wealthier people moving into the area. New construction included an apartment building of passive house design at 283 Greene Avenue.