Rapid house price inflation is not new in New Zealand. Auckland, in particular, has had regular booms since the 1980s, to the point the city is now home to some 61 suburbs with a median house price of $1 million or more.
But what makes the most recent surge so extreme is it comes during a period of low inflation for almost everything else in the economy - including wages. Data last week showed consumer price inflation was just 0.1 per cent in 2015.
The Consumers Price Index does not include house prices, although building costs and rents are included and were among the only price categories to rise.
Low inflation is expected to put renewed pressure on businesses and flow through to lower wage increases. Perversely, it adds also to the likelihood the Reserve Bank will cut interest rates again later this year and make it even cheaper for those with equity to borrow and invest.
In this kind of low-growth economy, house price inflation is great news if you own one - but terrible if you don't. It threatens to accelerate the already growing gap between the haves and the have-nots.