Independent research organisation the New Zealand Institute of Economic Research is warning that the recent sharp fall in house sales poses a risk that could "put the brakes" on the currently strong economy.
In the organisation's latest quarterly predictions, principal economist Shamubeel Eaqub said the New Zealand economy had been recovering from the recession and NZIER was expecting that it would grow by 3.5% this year.
"But slumping house sales are a significant risk to our optimistic outlook for the economy," he said.
Eaqub said that house sales volumes lead economic growth by around six months. And sales have slumped by nearly 20% in the last six months (see chart below).
Eaqub said the current growth in the economy was being driven by increased spending and investment by households and businesses.
"The Canterbury rebuild remains a prominent feature, although economic growth is broadening to more regions.
"The impact from last year’s drought was also less than in 2008, and is now boosting rural growth."
But, back on housing, Eaqub said Auckland house prices had surged to record highs.
"Investor demand is driving the Auckland market. In an investor-driven market, sales and prices can turn rapidly.
"A sudden stop in house sales could make banks more careful in lending. That would put the brakes on broader economic growth."
He said that slowing growth in China was another risk, with over 20% of New Zealand exports going there.
"The indirect links through Australia and other countries exposed to China may be even more important, particularly for exporters outside of dairy, meat and forestry."
Eaqub said that further interest rate hikes on top of the two that the Reserve Bank has already done this year were likely to cool the Auckland housing market.
"A pause in hikes is possible after June, if the economy slows too quickly," he said.
The RBNZ would "be wary of causing a housing bust" in the provinces and sectors outside of Auckland housing, which Eaqub said were not overheating (see chart below).

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