The New Zealand Historic Places Trust could be in line for court action, if it stands aside over the demolition of the Christ Church Cathedral.
The trust has received a letter from Chen Palmer law firm over its responsibility to protect the historic building.
Nick Russell from Chen Palmer says they've pointed out to the Historic Places Trust that it will breach its statutory obligations to protect historic buildings if it is seen to approve CERA's Section 38 demolition order on the Cathedral.
He says CERA and the Cathedral owners will eventually have to consult with the trust if its demolition is re-commenced, and the trust could be acting unlawfully if they approve it.
A spokesman for the Historic Places Trust says they're considering the letter.