CIVIC Hall supporters have ramped up a campaign to save the building.
A public meeting organised by a newly-formed Civic Hall supporters group will be held Sunday for all residents opposed to the hall's planned demolition.
Member Ron Egeberg said Ballarat City Council's $2 million proposal to demolish the hall was a "monumental waste of ratepayers' money".
"(It) threatens not just a viable and significant community building, but our valuable public space," Mr Egeberg said.
"It was council's neglect, mismanagement and overpricing that led to a reduction in use of our Civic Hall and we won't stand by while further poor decisions waste money."
Fellow group member Jonathan Halls said the meeting would decide what action to take against the council's plan.
"There is no evidence the council is willing to change its mind," Mr Halls said.
"Yet they are about to waste huge amounts of public money at VCAT and the public will have to find a similar amount of money to fight its own council."
Both Mr Egeberg and Mr Halls said all evidence pointed to community support to retain the hall, including a survey, written submissions and public workshops.
"The Roy Morgan research shows clearly 72 per cent of Ballarat's population want the hall retained," Mr Halls said.
"If they (the council) had concerns about the research being done such a long time ago, then the correct thing to do is to redo it."
Mr Halls also said fundamental democratic processes had been ignored.
"This is the biggest conversation with the Ballarat community the council has ever had.
"The question is whether the community will ever want to participate in any consultation in the future if they are just going to ignore it in the end."
Mr Halls, who is an academic and heritage specialist, said the hall was the most significant modernist public building in Ballarat.
"It should be the jewel in the crown - instead it's sitting in a carpark."
The meeting will be held from 2pm to 4pm at the Ballarat Library meeting room.