A sales agreement was signed earlier this month and it went unconditional on Wednesday last week, selling for $1.14 million.
However the new owner relisted the property with another Barfoot agent on Friday - just two days after going unconditional. It will now go to auction in less than two weeks.
A house-hunter who considered the property as a home for himself and his extended family said the current agent, Angela Cai, told him the new owners had built a fence, but changed their minds and decided to buy elsewhere.
The agent had also told him property prices in the area were escalating by around $1000 a day.
"So try and save up for that," he told the Herald.
The man had spent a week arranging finance for the house but missed out when he could not match the eventual selling price. It was "absurd and ridiculous" that Auckland house prices were accelerating so dramatically but he was resigned to the situation and would keep looking.
Auckland Council issued a building consent for a new dwelling and garage at the Flat Bush School Rd address in April last year. A code compliance certificate was applied for on May 13, 2015 - the same day the sale went unconditional, a spokeswoman said. The certificate was currently being dealt with by council staff.
Ms Cai would not comment on the relisting when approached yesterday.
Mr Koh, who represented the previous owner and sold the property last week, said the new owners were a family with primary school-age children. He understood they had intended to live in the property as owner occupiers.
"Probably this is not the house they wanted. People do change their mind."
The $1.14 million selling price was reasonable for the area, which was popular with migrant communities who often purchased big houses for several generations of family to live in together.
Mortgage Link broker Stuart Wills said it was unusual to relist a property so quickly but not unheard of.
"Things don't change that quickly normally. But anything is possible."