Local Democracy Matters had its legal challenge against the Berejiklian government's plans to demolish the stadium thrown out of the NSW Land and Environment Court last week.

The group, which is backed by the Greens, swiftly launched an appeal in an 11th-hour attempt to block the state government's $730 million plan to rebuild the Moore Park venue.

Footage showed heavy machinery tearing down walls at the stadium on Thursday.

The NSW Court of Appeal agreed to an expedited hearing on Friday, little more than a week before the state poll.

Acting Justice Ronald Sackville, Justice Mark Leeming and acting Justice Arthur Emmett threw out the challenge shortly after the four-hour hearing ended about 3pm.

"All members of the court are of the view that the appeal should be dismissed," Justice Leeming said.

Greens MP David Shoebridge said that "Gladys Berejiklian will be known as the wrecking ball of NSW politics.

"The wreckers will go in, the stadium’s going to be destroyed."

He said the appeal court's decision was "the end of the legal road".

Local Democracy Matters treasurer Chris Maltby said the decision was "upsetting indeed".

"I think the moral case here is incredibly strong. It's up to the people of NSW to pass judgment on this project in the next week."

Opponents of the demolition plan to protest outside the stadium on Sunday.