Supreme Court Allows Trump’s $400 Million White House Ballroom to Proceed

Donald Trump speaks to the media alongside posters of his proposed White House ballroom amid construction at the White House on May 19, 2026. —Chip Somodevilla—Getty Images President Donald Trump’s $400 million, 90,000 sq ft White House ballroom is a step closer to becoming reality.

The Supreme Court on Monday allowed Trump to move forward with construction of the ballroom, which had been partially blocked by lower courts.

Divided 5-4, the Supreme Court granted an emergency request filed by the Trump Administration earlier in August, staying the lower court rulings.

The legal challenge to the construction, brought by the National Trust for Historic Preservation, argued that Trump did not have the authority to build the ballroom without congressional approval.

The Supreme Court ruled on procedural grounds that the trust likely does not have legal standing to sue.

The court did not rule on the legality of the construction.

“Today, we do not pass upon the legality of the government’s East Wing project.

We conclude only that, based on the submissions before us, the government is likely to prevail in showing that the Trust lacks ... standing to challenge the project in federal court,” the court said in its ruling .

The decision comes after Chief Justice John Roberts issued a temporary stay on the lower court injunction on Aug.

21, allowing above-ground construction to proceed while the full court deliberated.

Roberts ultimately was the only conservative justice to dissent, arguing that the project was “likely unlawful.” “The ballroom is a building or structure being erected on federal park grounds—President’s Park—in the District of Columbia.

Yet Congress has not passed any law resembling ‘express authority’ for the Executive’s construction of it,” Roberts wrote.

Trump celebrated the legal victory in a Monday post on Truth Social.

“I am pleased to report that the United States Supreme Court has just ruled in favor of the Ballroom/Military Complex being built without any further contingency, doubt, or threat,” Trump wrote.