Chateau Group has applied for permission from the FAA to build two 700-foot residential towers at 600 and 700 Biscayne Boulevard and extend their current approval. Chateau Group acquired the properties after a failed proposal to build two towers on the lots about ten years ago. They are currently used for parking and billboard advertising. The FAA had previously approved the towers with an extension granted in 2015 but that extension expires in January 2017.