"I have written to Secretary for Finance to assign an auditor just to say or see how things have been done, so we must have some visibility over how we do our disposal of assets.
"You know we need to put to rest what happened to the money, the process, if complied with, and all these things."
The Post-Courier reported speculation that the sale of the house took place without the Government's knowledge and without proper documentation.
But Foreign Affairs and Trade Minister Rimbink Pato told the Post-Courier that the proceeds from the sale are still parked in an account that authorities have identified.
"We are looking into it but it appears it's been sold and the current proceeds is still there. We don't think there was anything illegal and fishy," he told the Post-Courier.
"There is no reason to raise an alarm on this, the funds are still there I am told and I have asked the High Commissioner to produce to me and the government a report as soon as possible."
Since the sale, PNG's High Commissioner to New Zealand Francis Agwi has been staying in a rented property.