WASHINGTON — A federal appeals court on Friday, Aug. 7, blocked President Donald Trump’s administration from moving forward with major construction on his planned $400 million White House ballroom, ruling that the project requires congressional authorization.
The U.S. Court of Appeals for the District of Columbia Circuit issued a 2-1 appeals court ruling upholding a lower court injunction. The decision marks another legal setback for the project, which would replace the demolished East Wing with a massive new event space.
The appeals court will hold its ruling for 14 days. That 14-day window gives the administration time to seek emergency relief from the U.S. Supreme Court before the order takes effect.
The National Trust for Historic Preservation brought the lawsuit challenging the project. The group argues that a president cannot make such a significant change to the White House complex without approval from Congress.
Court says Congress has authority.
The dispute centers on how much authority a president has over construction at the White House, which sits on federal property.
The appeals court’s majority concluded that Congress must authorize a project of this scale. The ruling rejected the administration’s position that presidential authority and private financing were enough to allow construction to proceed.
The decision upheld an injunction previously issued by U.S. District Judge Richard Leon. Leon had blocked above-ground ballroom construction while allowing certain underground work tied to security and safety needs.
Leon found that the administration had not identified a federal law giving the president unilateral authority to build the ballroom. His ruling focused on congressional control over federal property rather than whether the ballroom itself would be useful.
Justice Department lawyers appealed that decision. They argued that courts lacked authority to interfere with the project and maintained that the president had broad power to manage the White House complex.
During arguments before the appeals court in June, members of the three-judge panel questioned how far that position could extend. The judges examined whether accepting the administration’s argument could severely restrict judicial review of major presidential construction projects.
Preservation group challenged construction.
The National Trust filed its December preservation group lawsuit in federal court on Dec. 12, 2025. It sought to stop construction until the administration completed required legal and regulatory reviews.
The organization has not argued that the White House should never have a larger event space. Its leaders have acknowledged that additional indoor capacity could serve practical purposes.
Instead, the dispute focuses on how the project received approval. The group maintains that Congress must authorize construction and that federal preservation and planning procedures must be followed.
The East Wing was demolished as work on the ballroom project moved ahead in 2025. The structure had long contained offices associated with the first lady and White House staff.
The administration has described the ballroom as a modernization project designed to improve the White House’s ability to host large official gatherings. Large events have sometimes required temporary structures on the grounds because existing indoor rooms have limited capacity.
Ballroom expanded beyond initial price.
Trump first announced plans for the ballroom in July 2025. The original ballroom construction announcement described a roughly 90,000-square-foot building capable of seating about 650 guests.
The White House initially estimated the project would cost about $200 million. That estimate later increased to roughly $400 million as the planned ballroom became larger and more elaborate.
Trump has defended the higher cost. He said the project expanded considerably from its original design and would use higher-quality construction and finishes.
The administration has said private donors would finance the ballroom rather than taxpayers. Trump is also among those contributing to the project.
Private financing, however, has not resolved the central legal dispute. The courts have focused on whether the executive branch has legal authority to make a major structural change to federal property without congressional approval.
The project team has included McCrery Architects as lead architect, Clark Construction as the construction contractor, and AECOM for engineering work.
The White House has also cited security considerations in defending the project. Officials have argued that a permanent indoor venue would provide advantages when hosting foreign leaders, official dinners and other large gatherings.
A broader fight over presidential power
The ballroom case reaches beyond questions about design, cost or historical preservation. At its center is a dispute over the separation of powers and Congress’ role in controlling federal property.
Presidents have overseen renovations and expansions of the White House throughout U.S. history. The building has undergone substantial changes, including reconstruction during Harry Truman’s presidency and earlier additions to the East and West wings.
The current case differs because challengers argue that the ballroom amounts to a major new structure rather than a routine renovation. They say that distinction makes congressional involvement legally necessary.
The administration has maintained that the executive branch must retain significant control over the president’s residence and workplace. Its lawyers have also argued that security concerns give the president additional authority over changes to the complex.
The appeals court majority did not accept those arguments as sufficient to allow the ballroom project to continue without congressional approval.
Supreme Court appeal could follow.
Friday’s ruling does not immediately end the construction dispute. The 14-day delay allows the Trump administration to ask the Supreme Court to pause the appeals court decision. The administration could argue that construction should continue while the justices consider whether to review the broader case.
If the Supreme Court declines to intervene, the appeals court’s order would take effect and construction covered by the injunction would have to stop. Trump has previously said he expects the ballroom to open around September 2028. That schedule could now change depending on further court action and whether Congress becomes involved.
For now, the administration’s next legal deadline is clear. It has 14 days from the Aug. 7 appeals ruling to seek Supreme Court relief before the order blocking construction takes effect.
