when you are president, you have to be a little careful about these transactions. so we haven t refinanced. shepard: president obama took other questions from users on the real estate web site zillow.com. of course, he is wrapping up his two day push for mortgage reform in california and arizona. where he has reiterated that the feds need to decrease their role in the housing market, but that there is a need for reform to boost ownership and protect the market. anyway, the president is largely in line with a bipartisanship senate plan. republican senator bob corker of tennessee the co-author says he welcomes the president s announcement and that it is better late than ever. meanwhile zillow has posted an estimated listing price for 1600 pennsylvania avenue. according to the site, the white house would set you back $319 million. information, it s not for sale. the site boasts at the 55,000 square foot home comes with 16 bedrooms and 35 baths if you are looking