Posted on September 27, 2018 by Mara Silvers in WNYC WNYC, By Mara Silvers The 28-story residence hall at 90 Sands Street in DUMBO is sparsely decorated; the large community rooms where hundreds of Jehovah’s Witnesses once gathered now sit empty. But give it a year’s worth of renovation work and developers say the building will provide permanent housing for hundreds of New Yorkers, many of whom are now living in homeless shelters. “We were jumping up and down, that’s true,” said Brenda Rosen, the president of Breaking Ground, describing the excitement at the acquisition.