Construction of a 90,000-square-foot ballroom and military complex at the White House will continue after the U.S. Supreme Court intervened Monday in a legal battle that has followed the project from the demolition of the East Wing through months of accelerated construction.
The Supreme Court ruled 5-4 on Aug. 31 to keep construction moving while litigation surrounding the project proceeds. The decision blocks enforcement of lower-court orders that threatened to halt above-ground work and allows one of the largest physical expansions of the White House complex in modern history to remain on its current construction schedule.
The project occupies the eastern side of the White House grounds, where the former East Wing stood before demolition began in October 2025. The government completed demolition of the East Wing in December, clearing the property for a replacement complex combining ceremonial facilities above ground with extensive military, medical and security infrastructure below the surface.
Construction has since advanced rapidly. Government filings submitted during the court dispute describe approximately 250 workers operating as much as 20 hours a day, seven days a week. The administration has reported the project at approximately 65 percent completion, although measurements of overall progress vary depending on whether the calculation refers to structural construction, individual phases or the complete project schedule.
The principal framework is expected to reach substantial completion in November. Much of the exterior facade is scheduled for completion by April 2027, while final construction is projected to continue until August 2028.
At the center of the development is a ballroom designed to dramatically expand the White House’s capacity for major state functions, diplomatic receptions, inaugurations and other official gatherings. Initial White House plans described approximately 90,000 square feet of total space with seating for 650 guests. Subsequent plans and public descriptions have placed maximum seating capacity closer to 1,000.
The ballroom itself accounts for approximately 22,000 square feet of the larger development and is expected to feature ceilings approximately 40 feet high. A two-story colonnade is planned to connect the new eastern complex with the Executive Residence, allowing ceremonial movement between the East Room and ballroom while providing secure access between the buildings.
Beneath the ceremonial structure is a substantially different component of the project. Court filings describe an integrated underground military and security complex extending five stories below ground. Plans include shelters, medical facilities and other hardened infrastructure intended to protect the president, senior government officials, foreign dignitaries and White House personnel.
The combined superstructure consists of concrete and steel, reaches approximately 70 feet in portions of the development and covers a footprint approaching 50,000 square feet. Administration officials have maintained that the underground facilities and ballroom are structurally integrated and that interrupting construction could interfere with security work.
The project’s estimated cost has also increased substantially since it was first announced.
The White House initially presented the ballroom in July 2025 as an approximately $200 million privately financed project. Estimates subsequently climbed to $250 million and eventually approximately $400 million. Administration officials have reported raising roughly $335 million toward that amount through private donations.
Public financing has separately entered the broader discussion surrounding security improvements associated with the development. Congressional proposals have included federal money for White House security enhancements, including security systems connected to the ballroom site. The administration has maintained that those appropriations are designated for security infrastructure rather than the ballroom’s non-security construction.
The project’s size, financing and permanent alteration of the White House grounds produced a legal challenge from the National Trust for Historic Preservation after the East Wing was demolished.
The organization filed suit in December 2025, contending that construction of a new building on federal property in Washington required congressional authorization and additional federal review. The dispute placed the ballroom project before the federal courts as construction continued.
U.S. District Judge Richard Leon eventually issued a preliminary injunction against above-ground ballroom construction. His order permitted underground work and construction necessary for White House security to continue.
The administration appealed, and enforcement of the injunction was repeatedly delayed while the litigation moved through the courts. A divided U.S. Court of Appeals for the District of Columbia Circuit ultimately upheld the restriction on above-ground construction, finding that the project lacked the congressional authorization required for such a substantial addition to federal property.
That decision placed the administration on a path toward a construction shutdown unless the Supreme Court intervened.
The administration appealed to the nation’s highest court, arguing both that the president possesses authority to improve the Executive Residence and that the organization challenging the project lacked sufficient legal standing to bring the case. Government attorneys also emphasized the integrated security and military facilities beneath the ballroom and warned that interrupting construction could disrupt work on infrastructure intended to protect the White House.
Chief Justice John Roberts temporarily prevented the construction restriction from taking effect earlier in August while the Supreme Court considered the administration’s request.
Monday’s 5-4 ruling extended that protection and allows construction to proceed.
The Supreme Court did not determine whether President Donald Trump ultimately possesses the legal authority to build the ballroom without specific congressional authorization. Instead, the majority concluded that the National Trust for Historic Preservation likely lacked the constitutional standing necessary to challenge the project in federal court.
Five justices supported allowing construction to continue. Roberts joined Justices Sonia Sotomayor, Elena Kagan and Ketanji Brown Jackson in dissent.
The disagreement leaves unresolved the broader constitutional dispute over the respective powers of Congress and the executive branch concerning major permanent construction on federal property. Lower courts had concluded that congressional authorization was necessary, while the administration has argued that existing federal law provides sufficient presidential authority for improvements to the Executive Residence.
The construction itself has continued throughout much of that legal fight because court orders restricting the project were stayed while appeals proceeded.
Federal planning reviews have occurred separately from the court dispute. The U.S. Commission of Fine Arts reviewed the architectural design, while the National Capital Planning Commission considered the site and building plans during public proceedings earlier this year. The planning process generated tens of thousands of public comments as the scale and architectural relationship between the new structure and the historic Executive Residence received national attention.
The completed project will replace an East Wing whose various incarnations had served the White House for more than a century. The East Wing historically contained offices used by the first lady and White House staff, along with visitor and ceremonial functions. Its demolition marked a permanent alteration of the White House complex and provided the physical footprint necessary for the considerably larger replacement.
The new eastern complex will be built on a scale substantially greater than the structure it replaces. In addition to the ballroom and underground facilities, plans call for expanded offices, circulation areas, secure connections and supporting infrastructure.
The White House has presented the ballroom as a solution to a longstanding limitation of the Executive Residence. The East Room, traditionally the largest formal room in the White House, accommodates approximately 200 seated guests. Larger state events have frequently required temporary structures erected elsewhere on the grounds.
The new ballroom would increase indoor capacity several times over and provide a permanent location for large diplomatic, ceremonial and governmental gatherings.
Construction now enters its next major phase without an immediate court-ordered interruption. Steel, concrete and structural work will continue toward the administration’s November target for substantial completion of the framework, followed by enclosure and facade work expected to extend into 2027.
Interior construction, security installations, mechanical systems, architectural finishing and work throughout the underground complex will continue beyond those structural milestones.
The Supreme Court’s Aug. 31 decision does not settle every legal question surrounding the project, but it removes the immediate judicial barrier that threatened to stop above-ground construction. With crews maintaining an accelerated schedule and major structural milestones approaching, the transformation of the eastern White House grounds is expected to continue toward the project’s current August 2028 completion date.