Very true considering he purchased it 1985 for $105k. If council rezones he'll be in big trouble as rates could be as high as $40k per year.
Cost of doing business. I would be nervous if Council didn't rezone it. No residential zone = no $$$. Hence my reference was always GROSS profit. Costs will be add up: fauna survey, contamination survey, indigenous heritage, drainage contributions, open spaces, roads, tree removal, or retention, etc.
Still I will buy it for $1M now if he is selling.
Peter