What is Cornwall Park Trust's rationale behind hiking rents for ASB Showgrounds? 9 Mar, 2021 04:35 AM 5 minutes to read ASB Showgrounds' known for strong financial management but that might not save it. Photo / Supplied Auckland Business Chamber boss Michael Barnett questions why the Cornwall Park Trust is pursuing rent hikes against the likes of the ASB Showgrounds "unless they have another agenda". The non-profit showgrounds board has warned it is struggling to see how the 8ha non-profit exhibition and events site can remain solvent in the face of a massive proposed rent hike by its landlord, the Cornwall Park Trust, and a string of major event cancellations due to Covid-19.