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BOE discovers what we have known since 2003.


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Something for the data crunchers here to go over.

Using the google new search engine I have found this gem, so now when people talk about the HPI bubble and what caused it, you have a BOE paper to back you up.

First the article.

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House prices, low interest rates and what happens if the music stops

The article written by some one who worked in the Tony Blair Institute, ha! The cheek of these fuckers. It was under Blair that the bubble started!

Link https://reaction.life/house-prices-low-interest-rates-and-what-happens-if-the-music-stops/

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Just before Christmas, the Bank of England delivered housing nerds an early present in the form of a new paper on the determinants of UK house prices. Authors Victoria Monro and former MPC member David Miles conclude that, relative to incomes, the rise in house prices between 1985 and 2018 “can be more than accounted for by the decline in the real risk-free interest rate observed over the period”. Stop me if you’ve heard that before.

Following on from my paper for CaCHE in the summer, and work presented by Fergus Cumming and John Lewis of the Bank in September, this adds to a growing recognition that interest rates have been the overwhelming cause of rapid house price growth in recent decades. This new understanding represents an important break from the previous consensus that lack of building was to blame — a view that has been echoed by governments, academics, think tanks, campaigners and journalists for many years.

Yet even among those who now concede that that inadequate supply wasn’t the cause of high prices, many still strongly argue that a supply response, to offset the effect of falling interest rates, could nevertheless be the solution. Munro and Miles address this question with intriguing results.

At the end of the paper the authors run a scenario under which UK housing supply is made to respond more strongly to rising prices than has been observed in the past. So would a deregulated planning regime have significantly changed the story of the 156% real terms increase in house prices seen since 1985?

What if…?

In the scenario, the authors double the measured responsiveness of supply to prices in the UK (taking it to a 0.8% increase in the flow of new supply for every 1% increase in prices). This is closer to supply elasticities seen in Japan, Denmark and Canada and well above those seen in many other countries (see chart). But they simultaneously make two other changes to the inputs, lowering the income elasticity of demand and, most importantly, applying the fall in government bond yields seen in the US over the same period (-4%) rather than the actual UK experience of -5.6%.

The result of these three changes is that prices would have risen by 88% according to the model, a little over half of what we actually experienced. In other words prices would have ended up about a quarter lower than they are today.

Some supply advocates appear to have misinterpreted this as showing that easing supply constraints is therefore the answer. Alas, no. In this scenario, the bigger supply elasticity makes only a small difference. As the authors note:

[L]ow supply elasticities – the focus of a great deal of attention — could not in itself account for more than a part of the rise in prices. Were the supply elasticity for new house building in the UK much higher, the rise in house prices generated by very low interest rates would likely still have been significant.”

Indeed from the headline results of the paper, it’s clear that the smaller fall in interest rates under the scenario is doing most of the work in keeping a lid on prices.

Isolating the impact of a higher supply elasticity

I asked Victoria Monro what would happen if we only change the supply elasticity and leave all other variables at their observed levels. She very helpfully computed the results. If UK housing supply had been twice as responsive, prices would still have increased by 149% (the green bar below), compared to the model’s baseline prediction of 173% (first blue bar).

I remember that in the 2000-2008 years, even though Spain built as much houseing as Germany, Italy and France combined, the house prices where rocketing. This is because of supply of credit driven by low IRS.

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In other words, even if housing supply had been as responsive as in countries that are often held up as exemplars, prices would be only around 9% lower than they are today. All of this is pretty much exactly in line with the implications of MHCLG’s own model sensitivities (not to mention the rest of the literature), resulting in very similar numbers to those I’ve calculated before.

Of course, 9% cheaper houses is not something to be sniffed at. Using the paper’s elasticities, it implies the addition of around 1.3 million extra surplus homes (taking the surplus — i.e. vacant— housing stock from the 5% it sits around today to approximately 10%). Whether the benefits of so many extra empty homes outweigh the costs is a separate question for another day.

But what is beyond doubt is that even much more responsive housing supply would not significantly have constrained the price boom, nor will it do much to make houses more affordable from here onward. However the insights that flow from the analysis go wider.

The Bank’s evolving view on housing

It seems a significant shift is underway in the Bank’s view of the reasons for the boom in house prices of recent years, with potentially important implications for financial stability.

Back in 2014 Governor Carney blamed rapid price growth on a “chronic shortage of housing supply”. With no imminent risk of a housing glut, the implication was that house prices were unlikely to drop dramatically. Now that two separate teams of Bank researchers have concluded that the boom has really been driven by interest rates, this puts the financial stability risks posed by the housing market in a rather different light. Indeed, as the authors make clear, even relatively small increases in gilt yields could probe the outer limits of the Financial Policy Committee’s stress tests.

In December 2018, the real yield on a 10 year index-linked gilt was -2%. […] Were real gilt yields to rise to 0% (levels last seen around 2011), this would imply a 31% fall in house prices.” (emphasis added)

None of this means that the Bank’s efforts to accommodate the global decline in interest rates — cutting the base rate to unprecedented lows and undertaking QE — were or are the wrong policy. Far from it. But the socially and financially troubling side effects of low interest rates on the housing market can no longer be passed off as a failure of housing policy.

Time to speak up?

Of course, the Bank’s job is to worry about the stability of the financial system. But even if lenders could swallow a 30% drop in prices, quite a lot of youngish homeowners might be more than a little peeved at finding themselves deep under water. And since high-LTV lending has been gathering pace, there are now an increasing number of them in the firing line.

If the prevailing view has changed, and the Bank now believes prices are highly sensitive even to limited normalisation of interest rates, shouldn’t they make sure households get the message? The music may be playing, but would-be owners don’t have to get up and dance.

Understandably, the public debate spends a lot of time lamenting the plight of people struggling to get on the housing ladder. But maybe we should worry just as much about those on the lower rungs who have sunk (or will sink) large amounts of their savings into assets whose value could quickly evaporate. Rather than executing a silent U-turn, the Bank should lay out the risks for households implied by its reappraisal.

Meanwhile for the Government, which has underlined its determination to raise home ownership, the dilemma posed by the new diagnosis is even more stark. Is it wise — or indeed ethical — to encourage families to take very large and unprecedentedly risky bets on the future path of interest rates that most don’t understand?

The BOE paper:

https://www.bankofengland.co.uk/-/media/boe/files/working-paper/2019/uk-house-prices-and-three-decades-of-decline-in-the-risk-free-real-interest-rate.pdf?la=en&hash=7C12A901353CB615C3FC1A58557918D50775E470

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V Concluding remarks


In this paper, we have presented evidence connecting the decline in the real yield on index-linked
gilts, as a proxy for the risk-free rate, to rising house prices and falling rental yields over the long
term. The conclusions are stark – since 1985, the observed decline in index-linked gilt yields and
24


other changes in the cost of home ownership are associated with an increase in house prices of
around 90%; income rises account for about a further rise of 80% - between them these factors
account for all of the observed rise.


This does not mean that other factors are unimportant for short-run fluctuations in prices; the
equilibrium conditions explored here provide an explanation for the long-run trajectory in house
prices. Over shorter horizons house prices will be driven by other factors – such as movements in
mortgage availability, shifts in uncertainty and the ups and down of the business cycle. Over the
longer term one can account for all of the rise in house prices relative to incomes as being due to
persistent declines in real interest rates.


Today global yields on inflation-proof government bonds are at a historical low. In the UK,
the 10 year index-linked gilt yield in early 2019 was a little under -2.0%. Were the 35 year trend
to reverse, and gilt yields to rise rather than fall, this research indicates that there would be a very
substantial long-term consequence for real house prices. Our results suggest that a 1% change in
real interest rates that was persistent could move real house prices by just under 20% across many
years.


This calculation illustrates the sensitivity of house prices to changes in interest rates. But it
does not suggest that house prices are likely to move lower. That would only be reasonable if a
reversal of the 30 year downwards trend in safe real interest rates seemed likely. But measures
of real interest rates in the UK and other developed countries show little sign of mean revision
(see Figures 6, 7 and 8). We also noted that forward rates consistently move in line with spot
rates implying that what is priced into bond markets has consistently been that the best estimate
of yields in the future is the current rate. That is consistent with a random walk model of real
yields and not with mean reversion. Nor do explanations of the current low level of real interest
rates (be they based on secular stagnation hypothesis or a savings glut story) give much reason
to anticipate a reversion to higher real rates

 

 

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