Wasn't this going to be a Post Office location?

http://www.dnainfo.com/new-york/20150107/prospect-heights/shared-workspace-with-pour-over-coffee-roof-deck-coming-brooklyn

http://www.crainsnewyork.com/data-lists/real-estate-deal-watch/details/12/3227256

http://atlanticyardsreport.blogspot.com/2012/01/industrial-site-for-sale-on-dean-street.html