Racing club past president John Fairley and WDC chief executive Mark Simpson signed a Memorandum of Understanding (MoU) in June 2010 regarding a plan change that would re-zone 56 hectares of the club's land for residential lifestyle development.
That would allow the club to on-sell the proposal to a developer, the return future-proofing the racing facility which was losing the race for economic viability.
The MoU stated WDC would be responsible for all costs associated with preparing the plan change, and estimated them at $150,000.
The club was advised its cost would be $30,000, but the asset rich, cash poor club has had to borrow $250,000 from the NZ Racing Board to see the plan through.
At yesterday's meeting, Mr Fairley and the club's financial officer Karen Houlihan said the costs to both parties had been bumped up because the council "changed the game".
WDC's decision for independent commissioners to hear Plan Change 113 greatly increased costs, for instance. Part of the cost to the club was a $2356 payment to Councillor John Williamson for sitting in on the two-commissioner hearing.
Policy and monitoring manager Paul Wanders said the situation was "very unique" because staff had worked on the plan change before it was re-designated a private plan change.
The "interchangeability" of the words adopt and accept had led to confusion about who was responsible for costs, Mr Wanders suggested.