Hamilton's deputy mayor Gordon Chesterman called on the council to scrap the entire rates review as he removed himself from the start of the four day hearing.
Mr Chesterman's declaration caused a domino effect as councillors Daphne Bell and Maria Westphal also said they had perceived clashes owning commercial property in the CBD and exited.
Low value buildings on high value land in Hamilton's CBD are set to benefit most from the proposed move from a land-based to capital-based system.
About 140 people are expected to submit during the hearing.
In a parting shot Mr Chesterman said the council should listen to 80 per cent of the 2763 submitters who opposed the move and save council time and money by keeping the status quo. He said the public outcry made a "mockery of the next few days".