The most eminent Griffin authority in America is Paul Kruty, Emeritus Professor of Architectural History at the University of Illinois’ School of Architecture. In supporting the house’s listing by the Australian Heritage Commission he wrote:
“Because of its design qualities and prominence among the Griffin houses in Castlecrag, the Fishwick house has always had a high level of local significance. Following its restoration, in my opinion, it ranks among the most important Griffin buildings in both the United States and Australia.
As a well restored, outstanding example of his residential architecture, I believe it has significance at an international level.”