She reportedly sold the home back in February, but as recently as June 2, she had her baby shower at the house... a few weeks before that, Kanye's Lamborghini was damaged by the front gate at the house. She must be leasing the house back from Roberts while the new house is being completed.
http://realestalker.blogspot.de/2013/02/week-end-wrap-up-kim-jessica-and.html
http://en.wikipedia.org/wiki/Marc_Roberts_%28sports_agent%29