A US judge has temporarily halted President Donald Trump’s White House ballroom construction project from continuing, ruling that proper procedures were not followed before the building project began.

The ruling comes after the White House was sued by The National Trust for Historic Preservation.

"I have concluded that the National Trust is likely to succeed on the merits because no statute comes close to giving the President the authority he claims to have," said Judge Richard Leon, who was appointed by a Republican president.

Trump has criticised the ruling on his social media site, saying that the project is going well, and "will be the finest Building of its kind anywhere in the World".

The Trump administration has previously said its plan was more economical than renovating the East Wing. It also noted that many presidents had made changes to the White House