Auckland-based Chinese law firm boss Royal Reed says Chinese buyers will find a way around the ban by banks on foreign lending.
She also says the Government's figures on offshore buyers are unreliable, because not enough information has been gathered about them.
Ms Reed was born in Taiwan but has spent most of her life in New Zealand, and is now practising as Mandarin-speaking lawyer dealing with Chinese clients.
Ms Reed says she wanted to speak up to shed light on what's happening in the offshore property market because the Government's systems are naive and trusting.
Prime Minister John Key says the data is in its infancy, and the Government will gather more over time but he trusts it to be accurate.
"There may well be other ways people are trying to circumvent the system, I'm not aware of any but you can never say never in life."
Watch the extended interview.
