The recent case of DeBattista v Minister for Planning and Environment  NSWCA 237 highlights the importance for an expert witness to provide a report that reflects their own opinion unless stated otherwise.
In this case, Council engaged with an external Urban Design Consultant (Consultant) to comment on a planning proposal. After Council requested significant changes to the first and second draft reports, the Consultant provided a third and final version adopting such changes. The contention was that the final version of the report failed to identify the adopted comments from Council and thus was prima facie the Consultant’s prepared report based on their own opinion.
His Honour divulged the greater pressure asserted on the Consultant by Council noting that the terms of the professional’s retainer were that it would not be paid if Council was dissatisfied with the opinion provided. His Honour further stated that:
“No professional should assent to such a term. No ethical client should demand it”