The City of Perth looks set to overturn its long-running media gag on councillors after a surprise vote at a committee meeting last night.

The city's Finance and Administration Committee voted 3-0 for changes to the city's 10-year-old policy that bans councillors speaking to the media.

Currently the city's chief executive Martin Mileham and Lord Mayor Lisa Scaffidi are the only two representatives allowed to talk to the press about city matters.

It is the second time the committee has passed such a motion.

But this time it was backed by supporters of the Lord Mayor, councillors Janet Davidson and Lily Chen along with councillor Reece Harley, who has long advocated for the change.

In March, councillor Judy McEvoy asked councillors to sign a statutory declaration they had not contacted a newspaper in any way over City of Perth chief executive's probation or his performance review.

At the time, seven councillors agreed to sign the document, but two, Deputy Lord Mayor James Limnios and councillor Gemma Green, refused.

Last night's motion will be presented at next week's full council meeting.

Mr Harley welcomed the move.

"After three years of campaigning for it I'm increasingly hopeful that the City of Perth will overturn its gag on councillors," he said.

"This is a win for democracy and a win for transparency at the city."

In April, Premier Mark McGowan accused the council of having a "Stalinist culture", and likening the policy to something out of North Korea.

Mr McGowan called for Ms Scaffidi to resign after being found guilty of 45 breaches of the Local Government Act, following a failure to disclose gifts and corporate travel worth tens of thousands of dollars.

Deloitte Australia has been brought in by the council to conduct a $500,000 audit of operations.

The city is also facing declining revenue, with net income set to halve this year from $17.7 million to $8.5 million.