Harry Bradford looked at the value of The White House:

• Strip the White House of its historical value and the American President’s home office with its 132 rooms, movie theater, bowling alley, and tennis court would be worth $110 million.
• Only two properties in the entire United States are worth more.
• In contrast the residence of the UK’s Prime Minister was valued at $7.3 million in 2010.
• If you took into account The White House’s history and importance as a national symbol the building would likely fetch more than $1 billion in an open auction.

Read more about what you would be paying for if you were considering making the President an offer for the property, and how The White House compares to Buckingham Palace over here.

Source: Huffington Post