With more than four decades of construction industry experience, Stuart Roberts believes Nook Homes breached its own contract conditions.
The development included a five-star hotel and A-grade office spaces.
The company has let three directors go to cut costs and make way for one from Centuria Capital.
Augusta Property Fund’s $89m transaction was cancelled on March 27.
Covid-19 is considered a force majeure under the agreement with central government.
The buyer isn’t yet known, as Charter Hall pockets $36.9m.
The property fund has lost deposits on two property acquisitions.
The property fund wants to get its LVR out of the low 40% range.
It expects to settle a $140m acquisition on Thursday.
The Property Council says the group's letter was “inflammatory and out of context”.