Quite a few people have done this because they weren't that sure whether they'd stay in NZ or not. I guess it all depends on whether you have enough startup money without having to sell the house. If you were able to rent out your house, it could at least pay the mortgage repayments until you decide what you want to do. With the uncertainty of not knowing if you'd be staying or not, you probably wouldn't be looking to buy another house in NZ straight away anyway.
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Mother Bear 
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