Hundreds protested Satterley Property Group's North Stoneville development in the Perth hills, including politicians and a person dressed as Nigel Satterley clad with a fake chainsaw.
The proposal has been granted federal environmental approval, but a final decision on the housing development sits with the State Administrative Tribunal.
WA farmers have vowed to campaign heavily against Labor candidates during next year's federal election following the government's decision to ban live sheep exports from 2028.