The Territory and Municipal Services Minister said last week the ACT Government would move to block a proposal to build a school sports pavilion on the inner north oval, due to strong community opposition.

The plan included the oval being re-instated as a watered field.

A government-commissioned survey found 62 per cent of residents oppose Brindabella Christian College's plan to build a two-storey sports pavilion and car park.

Mr Rattenbury said last Tuesday the government would not endorse the plan, due to be debated at a meeting last week of the North Canberra Community Council.

The meeting went ahead, with the 'Yes' and 'No' arguments put and debated, despite the decision being made.

Council chairman Mike Hettinger said he was very disappointed the minister did not defer his decision until after the debate.

The deadline for comments to the government survey was September 11.

"The minister said he would not extend the deadline and one of the reasons he gave was that advocates for the 'No' case were lobbying him not to extend the deadline, which I found rather odd because you would think the people advocating the 'No' case would be very positive about the opportunity for a debate," Mr Hettinger said.

"I thought it was extremely important the deadline be extended, we were trying to do the right thing by the whole inner north community by letting everyone know.

"Mr Rattenbury undertook to attend the council meeting because it would help inform him about how [the] community felt about the proposal.

"Then, the following week when I called him again, he said he wouldn't be going to the meeting because he didn't want to be topic of the conversation.

"He was worried about the 'No' case [advocates], he felt if he extended the 'have your say', they would say it's a conspiracy."

Mr Hettinger said the general feeling of the meeting was the proposal would have been good for Lyneham oval.

"My feeling was that the members of the audience who were being presented with the full case for the first time, in general they thought rejecting the proposal was a lost opportunity," he said.

Greg Zwajgenberg, the school's acting board chairman, said he was disappointed Mr Rattenbury had moved so swiftly and publicly on the issue.

"At a recent meeting in his [Mr Rattenbury's] office, I had advised him that the college would be working to a revised timeline of October 2016 for the required deadline with the Commonwealth on the use of $800,000 in capital grant funding towards the project and therefore ultimately only needing to reach an agreed outcome shortly before that point in time," he said.

"It also defies logic that a minister for sport and recreation in support of a specific government position with respect to fighting childhood obesity, would so easily walk away from 800 children being able to access a maintained oval, when his predecessors and the previous and current chief ministers had all supported the upgrading of the oval."

Mr Zwajgenberg said he believed most people who attended the council's meeting last week, questioned why the project was derailed.

"I also fail to understand why the minister, after my personally asking him in a specific email not to decide on the matter until after the NCCC debate was held on the 15th of September, came out with his decision the day before the debate was held," he said.