Building industry figures lobbying to change the government's mind over the foreign buyer ban have been buoyed by the International Monetary Fund adding its voice to the cause.
IMF officials, in New Zealand this week, called the Overseas Investment Amendment Bill "discriminatory" and hinted that banning foreign investment in housing was an over-reaction to a problem that might not even exist.
"Foreign buyers seem to have played a minor role in New Zealand's residential real estate market recently," said IMF division chief for Asia and Pacific Thomas Helbling.
He added that there were other ways for the government to respond if large volumes of unwanted foreign money suddenly flowed into New Zealand's property market.
Any such measures should be "temporary and targetted", Helbling said, whereas the buyer ban is a "very definitive measure" and could send a negative signal to foreign investors more broadly.