The Mexican business magnate and philanthropist[2] who, as of 2011, is the richest person in the world owns this house. He bought it in 2010 from Tamir Sapir.
http://maps.live.com/default.aspx?v=2&cp=40.778756~-73.961989&style=o&lvl=2&tilt=-90&dir=0&alt=-1000&scene=18425626&encType=1
http://www.luxist.com/2010/01/13/duke-semans-mansion-for-sale-at-50-million/
Sapir sold his home to Carlos "Slim" Helu, the richest man in the world.
http://www.luxist.com/2010/07/28/worlds-richest-man-buys-duke-semans-mansion-for-44-million/