250_delaware_avenue | cost | 110 million (dollars) <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 
110 million dollars is the cost to build 250 delaware avenue. with its 12 floors and 30843.8 square metres.the delaware north building is a mixed-use development in buffalo, new york