Residents should not be given a bigger say at Victoria's planning tribunal because it would not be "fair", according to a developer lobby group.

In a letter to the Premier and ministers, the Property Council's Victorian executive director Jennifer Cunich said they opposed "the Government's plans to add additional weight to community opinion in regard to VCAT decision-making".

Property Council Victoria Executive Director Jennifer Cunich. Credit:Josh Robenstone

"Such a move goes against the very basis of a just and fair legal system. We would consider any attempt to make such changes a fundamental deterioration of Victoria's legal apparatus," it said.

Labor has pledged to amend the Planning and Environment Act "so that, where appropriate, the Victorian Civil and Administrative Tribunal (VCAT) must take into account the extent of community opposition to planning proposals".