What to know about the $250 million ballroom Trump is adding to the White House Updated 21 mins ago President Donald Trump is adding a $250 million ballroom to the east side of the White House. Construction started this week with crews tearing down the facade of the East Wing. Trump and White House officials had said nothing would be demolished during construction. The 90,000-square-foot ballroom will dwarf the main White House itself. Trump says it will accommodate 999 people, up from 650 guests. That's almost five times the number that can fit into the East Room, the largest space in the mansion. Trump says the ballroom won't cost taxpayers a dime. The White House hasn't released information on who is donating money to help build it.

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