I always struggle a bit with 'discussion papers' in terms of what I'm supposed to take from them and how 'significant' they may or may not be.
And so it is a bit therefore with a new paper from vastly experienced academic and public sector economist Andrew Coleman, who is currently working for the Reserve Bank (RBNZ). I'm going to say that this is pretty significant and contains some ideas we as a country need to look hard at.
The RBNZ has issued a wide-ranging paper by Coleman that examines the reason why housing markets have such unusual price and building activity cycles.
In among a number of things, Coleman talked about 'price backwardation' - when capacity constraints in the property construction and development industry lead to temporarily high house prices and temporarily high construction costs.
...And he made the point that central banks "could be justified" in using interest rate rises to combat high house prices.
This immediately raises a number of issues.
One issue is that a lot of people probably think the Reserve Bank already does this - or at least is supposed to. For is there not always a loud chorus about how the RBNZ 'should do something' when house prices start gallivanting away - as is an ongoing hazard in our housing obsessed population?
And I often feel honour-bound in articles to explain that the RBNZ does NOT target house prices and that is not its thing. It targets achieving 1% to 3% inflation and maximum sustainable employment under its monetary policy role, while its other major role is maintaining financial stability. It's under the latter responsibility that houses and house prices sit, since if house prices are doing things that threaten financial stability this is of interest indeed to the RBNZ.
At the moment we have higher interest rates than we've had for a while - which is being done to tackle rampant inflation. But as we've seen, the high interest rates have also knocked the stuffing out of the housing market.
As Coleman points out in his paper, central banks don't have a mandate to prevent unsustainable house prices.
But what if they did?
Effectively Coleman suggests the central bank could substitute high interest rates for high house prices during periods when capacity constraints are causing construction and housing costs to get out of whack. So, in other words crank the interest rates up to stop house prices getting too high - and have the public facing high interest rates rather than high prices, for a period of time anyway.
"For those people who purchase property at unduly high prices, or those people who are forced to sell at unduly low prices, these periods of extraordinarily high or low prices can cause considerable welfare losses," Coleman says.
"In addition, there is now substantial evidence that the risk of financial crises and particularly virulent and costly recessions increases during episodes when house prices and mortgage credit rapidly increase.
"It is plausible, therefore, that prolonged episodes of price backwardation could lead to particularly poor financial and economic outcomes in subsequent years. The rapid increase in house prices and credit during 2000-2005 is perceived to have contributed to the Global Financial Crisis."
Coleman says that unfortunately, little is known about the welfare implications that arise when property demand falls in response to high interest rates rather than high prices during periods of 'cyclical backwardation'.
"Any decision to raise interest rates to reduce house price backwardation will depend on the welfare costs of price backwardation, if any; on the importance of these welfare costs to the central bank; on the tools available to the central bank to respond to these episodes; and on the relative costs of these interventions relative to other interventions.
"High interest rates have other economic consequences that would need to be taken into account when making such a decision. They typically reduce employment and the inflation rate and lead to an exchange rate appreciation, for example. There is very little formal research on the relative costs and benefits of using interest rate changes to reduce the size of unsustainable house price changes."
So, there we go. Coleman is not seemingly suggesting this is some sort of perfect remedy. But he does appear to think we should be doing more research into the subject. Seems like a very good idea to me.
Right now the New Zealand housing market is having one of its infrequent periods in the doldrums, so it is a great time to think a bit deeper about how we tackle the housing market in future.
This country surely does not need a repeat of berserk episodes like the 40% price rise during the pandemic again in future.
Our housing market is now such a dominant part of our economy and our nation's psyche that perhaps we do have to treat it as a special case and say - well this thing needs putting under some sort of control. Now I don't mean 'control' in a regulation kind of way, but there's no doubt the RBNZ would be well able to to do something about demand.
Let's step back for a second and talk about interest rates.
I always thought it was reasonably obvious that house prices would rise when interest rates were low - but maybe it wasn't obvious.
I remember that the former chief economist at Westpac Dominick Stephens would for many years emphasise just how strong a role the level of interest rates was in house prices. And it was interesting to note that after Stephens moved to Treasury the government department changed the methodology it uses to forecast house prices by putting more weight on the impact of interest rates.
And then there was the suite of research the RBNZ issued last year, which again perhaps on one level might have looked like it was stating the obvious, but on another made the very strong point that our mortgage rates dropped by much more than many countries in the period from 2008-2021 and, bingo, our house prices rose by much more than other countries.
Maybe we just needed to see all this in black and white.
The fact is low interest rates in future again could be dangerous for us.
So, what to do?
Our housing market will not be down forever. Indeed, even as I write this I'm reading economists' notes that suggest maybe there may now be some (tentative) signs of life in the housing market. Our borders are open again. People who will need housing are again flocking in. And we can confidently expect much more of that if National governs after October's election.
We know that our housing market can turn on a dime. It did that in 2020 when the mood within a month or two switched from Armageddon talk to 'everybody get in now!'
It may just be then that the idea of the Reserve Bank doing what a lot of people think it does/should do and targeting the housing market with interest rates is worthy of serious consideration.
But would this mean we would have to tolerate higher interest rates than in other countries on perhaps a frequent basis?
Well it might.
Could it be that this might have to be a price we pay for our expensive housing habit?
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