250_delaware_avenue | buildingstartdate | january, 2014 <tsp> 250_delaware_avenue | floorarea | 308438 (square metres) <tsp> 250_delaware_avenue | floorcount | 12 <sep> the delaware north building is a mixed-use development in buffalo, new york the 12-story, 330,000-square-foot mixed-use building features class a office space, a 120-room westin hotel, ground level retail, a 7,000-square-foot outdoor courtyard, and an adjacent structured parking ramp delaware north's world headquarters anchors the building 
construction of 250 delaware avenue began in january 2014 and has 12 floors with an area of 30843.8 square metres.the delaware north building is a mixed-use development in buffalo, new york