The Mad Butcher's original store in Mangere failed because of "unsustainable" sales costs, the first liquidator's report says.
But a spokeswoman for Veritas Investments, the Mad Butcher's NZX-listed franchisor, said the company "disagrees strongly" with the liquidator's conclusions.
The chain's founding outlet, established by Sir Peter Leitch in the 1970s, was put into liquidation by its franchisee on July 15.
The Massey Rd store owes $465,014 to creditors, including $418,172 to suppliers and $18,264 in staff wages and holiday pay, according to the report by liquidator Peter Jollands, of Jollands Callander.
He said the liquidation appeared to have resulted from "unsustainable cost of sales giving insufficient gross profit".