From the Huffington post.
Zillow: We first gave the White House a Zestimate in January 2009 as the Obama family was preparing to take residence. At that time, we estimated it was worth $308 million, based on the home's physical attributes (132 rooms! 55,000 square feet!), historical value and housing performance in the local Washington, DC market.
Today, as President Obama prepares to mark his first anniversary in office, our estimates put White House at a bit less: $292.5 million, a drop of $15.6 million, or 5.1 percent from last January.
As the country goes so goes the neighborhood?
Pity Obama doesn't have to pay property taxes on it.