250_delaware_avenue | location | united_states <tsp> 250_delaware_avenue | buildingstartdate | january, 2014 <tsp> 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 
in january 2014 building began on the construction of 250 delaware avenue in the us. the building has 12 floors with a total floor area of 30843.8 (square metres) and cost 110 million dollars.the delaware north building is a mixed-use development in buffalo, new york