# Book review: Shut Out

Book review: Shut Out: How a Housing Shortage Caused the Great Recession
and Crippled Our Economy, by [Kevin
Erdmann](https://www.idiosyncraticwhisk.com).

Why did the US have an [unusually bad recession in
2008](https://en.wikipedia.org/wiki/Great_Recession), followed by years
of disappointing growth?

Many influential people attribute it to the 2004-2006 housing bubble,
and the ensuing [subprime mortgage
crisis](https://en.wikipedia.org/wiki/Subprime_mortgage_crisis), with an
implication that people bought too many houses. Erdmann says: no, the
main problems were due to obstacles which prevented the building and
buying of houses.

He mainly argues against two competing narratives that are popular among
economists:

-   increased availability of credit fueled a buying binge among people
    who had trouble affording homes.
-   there was a general and unusual increase in the demand for homes.

### Reframing the Housing Bubble

There was a homebuilding boom, somewhat catering to those who wanted
lower-than-average priced houses.

There was also an important surge in prices for houses, which was mildly
concentrated on houses priced below average.

Many pundits put those two together, to conclude that the boom was
caused by loose credit, which fueled purchases by people who couldn\'t
quite afford a house.

Erdmann shows that those two patterns were mostly happening in very
different places, and the pundits are confused because they\'re not
separating out data for those places.

### Four Categories of Regions

> We are bidding up little condos and bungalows in the metropolitan
> enclaves of privilege, where high incomes are available but only to a
> limited number of families. \... Homes haven\'t become trophies.
> They\'ve become toll gates barring the way to employment.

The biggest surge in prices was in cheaper-than-average houses in a few
big cities. It was caused by massive demand from workers who could earn
unusual incomes there, because that\'s where unusually productive
industries became concentrated.

New housing was largely outlawed there. So prices rose because housing
became more valuable there. That generated an important refugee crisis,
as rents rose faster than many renters\' income, and as homeowners
cashed in on windfall gains. (I don\'t quite endorse Erdmann\'s use of
the word crisis here, but I\'ll use it for lack of a better term.)

Erdmann calls these locations [closed access
cities](https://www.idiosyncraticwhisk.com/p/what-is-closed-access-city.html)
(CACs). Soaring prices in these cities coincided with a population
decrease, which strongly points to a housing shortage as a leading cause
of those prices.

Erdmann\'s second category of regions is the contagion cities: mainly
Las Vegas, Phoenix, Miami, and Tampa. They were favorite refugee
destinations, by enough of a margin to produce a fairly stereotypical
bubble, with builders sometimes unable to keep up with demand, and home
prices rising, then falling (more than elsewhere) after the influx of
refugees decreased abruptly in 2006.

New home building in Phoenix increased nearly 50% between 2001 and 2005.
That almost exactly matched the net in-migration of households.

Since a good deal of this demand came from people who couldn\'t afford
to stay in CACs, their credit rating wasn\'t great. But they were
typically moving to cheaper houses, because housing costs were high in
CACs, whereas in contagion cities housing costs only rose a little
relative to incomes.

To the extent that reckless borrowing increased, it was by [middle and
upper class
people](https://www.jaromirnosal.net/uploads/6/0/7/5/60756213/newnarrative_september_2017.pdf)
buying extra houses as investments. They\'re the people with the least
to lose from defaulting on mortgages that were underwater.

His third category is open cities, such as Atlanta, Houston, and Dallas,
where homebuilders were able to accommodate a similar (slightly
smaller?) influx of refugees, without prices getting much above building
costs.

There\'s also a group of unclassified cities such as Seattle, Chicago,
and Detroit, where nothing particularly important to this story
happened.

Erdmann has some rather complex arguments about why there was little
connection between subprime lending and the subsequent crisis, but I
wanted something simpler. So I checked maps of [subprime
loans](https://geofred.stlouisfed.org/map/?th=blues&cc=5&rc=false&im=fractile&sb&lng=-93.867&lat=37.510&zm=5&sl&sv&am=Average&at=Not%20Seasonally%20Adjusted,%20Quarterly,%20Percent,%20no_period_desc&dt=2008-01-01&fq=Quarterly&rt=county&sti=147149&un=lin)
and
[foreclosures](https://www.researchgate.net/figure/New-foreclosures-across-US-counties-2008-and-2009-Note-Foreclosure-data-at-the_fig1_320382343).
The foreclosures show a modest tendency to be concentrated in contagion
regions, whereas the subprime loans are more concentrated in open access
areas. That provides some support for Erdmann\'s narrative.

### Closed Access Cities

> Cities like New York City have become creative centers because the
> cores of those cities developed before modern aesthetic sensibilities
> and local political control limited density. So density has become a
> sort of natural resource, like gold.

> nearly as many additional home were being built *in Florida* for New
> Yorkers and former Boston residents as in New York City and Boston.

Soaring home prices in CACs look at times like a bubble, because those
prices fluctuate more than prices do in places where supply expands to
meet demand. But any bubbles there are small blips compared to the
longer-term trend of buyers sensibly paying more for increasingly
valuable locations:
![SF Housing Prices](https://fred.stlouisfed.org/graph/fredgraph.png?g=GtYs)


Some of you may wonder whether CACs could have built enough housing to
avoid the refugee crisis. Here are some hints:

-   US cities aren\'t close to being [the
    densest](https://en.wikipedia.org/wiki/List_of_cities_proper_by_population_density)
    [cities in the
    world](https://www.waslhingtonpost.com/news/wonk/wp/2015/10/06/there-is-no-such-thing-as-a-city-that-has-run-out-of-room/):
    ![Revised petrol use urban
    density.jpg](https://upload.wikimedia.org/wikipedia/commons/2/20/Revised_petrol_use_urban_density.jpg)
-   Growth in commercial building density has not been similarly
    restricted - the obvious explanation is that fewer voters own
    commercial property, so there are fewer votes for restricting that.
-   Building apartment complexes is [outlawed in much of
    SF](https://www.legalizehousing.org/)

What about the urban planners who have been advocating increased [urban
density](https://en.wikipedia.org/wiki/Urban_density)? Erdmann implies
that approximately all of the constraints on increased density are
limits on residential building. Yet it appears that [urban density
advocates](https://en.wikipedia.org/wiki/Smart_growth) are devoting at
least half their effort to making cities more desirable places to live,
which does approximately nothing to increase density.

They\'re putting some effort into removing [minimum parking
requirements](https://www.parking-net.com/parking-news/skyline-parking-ag/minimum-parking-requirements).
Removing those requirements would be one modest step toward solving the
housing shortage. But they\'re also putting effort into [policies such
as environmental impact
assessments](https://en.wikipedia.org/wiki/Smart_growth#Environmental_impact_assessments)
that delay construction in order to [serve
goals](https://www.berkeleyside.org/2021/08/24/judge-freezes-uc-berkeleys-student-enrollment-at-2020-21-levels)
other than increased density. Urban density may be one of their goals,
yet their other goals seem to lead them to strategies that divert them
from progress on urban density.

### Inevitable Bust?

How much of the crash and recession were inevitable consequences of the
boom and bubble? According to Erdmann, little or none. He provides some
medium-quality evidence to support that conclusion.

The boom in the US did not stand out as exceptionally large compared to
other English-speaking countries, by criteria such as home price to
income ratios.

Australia appeared to have a bigger housing boom, partly due to having
closed-access cities: ![FCIC - Housing Bubbles in Multiple Countries
2002-2008.png](https://upload.wikimedia.org/wikipedia/commons/3/34/FCIC_-_Housing_Bubbles_in_Multiple_Countries_2002-2008.png)
yet it managed to avoid a recession until 2020.

The crash and recession were more unusual than was the boom, at least by
many measures, e.g. [changes in home
building](https://www.idiosyncraticwhisk.com/2020/08/trends-in-housing-supply.html).

The US economy in late 2007, through the summer of 2008, looked to me
like it was teetering on the verge of a recession, but it looked like
things were going well enough that the US could avoid a clear recession.
Then the economy fell off a cliff around September 2008, when Fannie Mae
and Freddie Mac were put into conservatorship, and their lending was
restricted further.

Erdmann implies that lending to homebuyers became too restricted around
this time, and that most of the financial crisis could have been averted
with better monetary policy and more home loans.

It\'s pretty clear that the Fed\'s policies became disastrous around
September 2008.

I\'m unclear about what other policy changes in 2008 mistakenly hurt
housing markets. But whatever the cause, loans to homebuyers with
below-average credit dropped dramatically in 2008. The large rise in
housing prices starting in 2012 shows clearly that prices in 2008 were
unusually depressed. It seems plausible that bad monetary policy and
credit restrictions were the main reasons why housing prices declined in
2008-2010. It seems pretty clear that most defaults on mortgages that
happened in this time frame wouldn\'t have happened without the price
declines (if only because selling the house would have been more
attractive than default). It\'s less clear how we could have known that
in 2008. I tried to analyze those issues at the time, and was unable to
decide whether the relevant policies were mistaken.

In 2010, [Dodd
Frank](https://www.investopedia.com/terms/q/qualified-mortgage.asp)
further restricted mortgage loans. That slowed the economy by shutting a
number of people out of the homebuying market. That was mostly a
reaction to imagined predatory lending. This looks clearly harmful in
hindsight - there was probably some need to ensure that financial
institutions took less risk in the next housing boom, but solutions
should have focused more on how much leverage those institutions used,
and less on preventing people with low credit quality from buying homes.

### Moral Panic?

Erdmann blames much of the 2008 recession and subsequent stagnation on
the mistaken belief that home prices were too high.

> After the crisis, the regulators at the Federal Housing Finance Agency
> and the Consumer Financial Protection Bureau were protecting potential
> homebuyers from the best buyer\'s market in a lifetime.

> Imagine that the conversations about the labor market over the past
> decade had been similar to the conversation about the housing market.
> There would have been a consensus that the problem was that there were
> too many jobs in 2005 and that real wages were growing too fast. We
> would have watched unemployment shoot up to 10% without attempting to
> stabilize it because we would have considered the spike to be a
> correction following the period of excess.

Erdmann\'s narrative is the housing market was doing about as well as
could be expected, given the problem of the CACs, through about 2006.
The subsequent credit restrictions (and poor monetary policy) caused
people to buy too little housing. The only housing bubble was in
contagion cities, and it was quickly corrected in 2007. Yet key parts of
US policy continued to react for years as if there was a wider bubble
that needed correcting.

Erdmann portrays the Fed\'s disastrous monetary tightening in late 2008
as being driven by a desire to drive down housing prices. That might be
a bit of what motivated the Fed, but Erdmann\'s selective use of
evidence gives a misleading impression that that was the Fed\'s primary
motive. The Fed clearly made other mistakes that were at least as
important, such as predicting they would hit their 2% inflation target,
even as [markets](https://research.stlouisfed.org/fred2/series/T5YIE)
were rapidly changing to predict deflation.

What about the problems at Fannie Mae and Freddie Mac? Erdmann wants us
to imagine that they would have been ok if only authorities hadn\'t
depressed housing prices. That\'s a somewhat plausible claim. He
doesn\'t present much of an argument for it, and likely couldn\'t do so
without a mind-numbing amount of detail. And even if they could have
recovered on their own under optimal policy, it\'s likely a sign of
recklessness if they weren\'t prepared to handle an ordinary degree of
faulty monetary policy.

### Other Problems that Erdmann Downplays

Erdmann convinced me that the 2008 recession remained mostly avoidable
well after the peak of the housing boom. Yet when discussing many other
proposed causes of the recession and subsequent malaise, he often says
something that boils down to \"this didn\'t cause the boom, so it\'s not
important\".

That sounds rather close to reverting to the standard narrative of boom
causing an inevitable bust when it suits his purposes.

There was some fairly reckless borrowing by people who bought houses
they didn\'t live in (i.e. as investments). At the time, I saw [evidence
of inexperienced investors flipping
houses](http://www.bayesianinvestor.com/blog/index.php/2006/01/09/more-on-the-housing-bubble/)
(maybe only in contagion regions), and inferred that the bubble was near
a peak.

Erdmann convinced me that this recklessness didn\'t become significant
until after the boom peaked. He wants us to also believe that it didn\'t
contribute much to the crash.

I agree with him that increased subprime loans, and increased loans to
investors/speculators, were not too important when the bubble was
inflating. They expanded shortly after the peak, by enough that it
became hard to return to normal without a crash. Erdmann wants us ignore
that, whereas I say those two factors together deserve about 25% of the
blame for the crash.

Fed policy was a bit too inflationary in 2003-4, although that was a
relatively small mistake compared to prior Fed mistakes. That influenced
the timing of the bubble, and appears to have made the bubble grow and
crash more abruptly than it did in other countries.

It\'s clear to me that many financial institutions and homebuyers took
on too much risk, due to a [widespread
belief](http://www.bayesianinvestor.com/blog/index.php/2004/10/21/greenspan_and_bubbles/)
that housing prices [never fall by
much](http://www.bayesianinvestor.com/blog/index.php/2005/09/29/housing-bubble-peaking/).
Erdmann\'s response is mostly to point out that the price declines were
temporary in most places, and due to bad policies. Those aren\'t
sufficient reasons to exonerate those faulty risk estimates.

### Other Causes

Many people point to indicators such as price to rent and price to
income ratios. I found those to be fairly good heuristics that helped me
to see that there was a bubble around 2005.

Erdmann shows that increases in these indicators were fairly normal and
sensible reactions by homeowners to a combination of reasons such as tax
incentives, and housing scarcity. Yet none of that contradicts the
concerns that they made housing markets, and therefore much of the
economy, more fragile.

Interest rates exert an important influence on housing prices. It\'s
pretty important to figure out whether the unusually low interest rates
of the past few decades are likely to be permanent, or whether they
reflect a bubble-like phenomenon that is broader than a housing bubble.
I\'ve been
[predicting](http://www.bayesianinvestor.com/blog/index.php/2020/05/27/bond-market-bubble/)
a rise in interest rates.

Until recently, I\'ve ignored the [demographic
effects](https://www.investopedia.com/terms/b/baby-boom-age-wave.asp) of
the boomer generation. Their savings rate has been high the past decade
or two, and will decline as they retire (although [other effects might
offset
that](https://research.stlouisfed.org/publications/economic-synopses/2019/04/19/factors-behind-the-decline-in-the-u-s-natural-rate-of-interest)).
[The Baby Boom: Predictability in House Prices and Interest
Rates](https://www.federalreserve.gov/pubs/ifdp/2005/847/ifdp847.htm)
suggests we should see declines in home prices and rising real interest
rates (see figures 8a and 9). I\'ll guess that demographic effects
explain 25% the housing boom.

### Wider Implications

Erdmann proposes high housing costs as a leading cause of the gap
between rising productivity and [stagnating median
wages](https://houseofdebt.org/the-most-important-economic-chart/). I.e.
the productivity benefits are going mainly to CACs homeowners and
landlords. My intuition is that this explains maybe 1/4 of the gap, but
I haven\'t analyzed this carefully.

[Two thirds](https://academic.oup.com/qje/article/134/1/1/5144785) of
the increase in wage inequality since 1978 is due to rising inequality
between firms. Erdmann attributes this to the effects of CACs attracting
the most profitable firms, and the highest-wage workers.

The housing situation in CACs is a near-perfect recipe for polarizing
the nation, by increasing class-based segregation. Has it been the main
cause of the past decade\'s political conflict? I suspect not, but I
don\'t have a good way of ruling out that possibility.

Can anything be done about the CACs housing restrictions? Erdmann is
pessimistic. Many of the people who have bought houses there would lose
a significant fraction of their net worth if those restrictions were
significantly eased.

There\'s a [Bootleggers and
Baptists](https://en.wikipedia.org/wiki/Bootleggers_and_Baptists) type
situation, where greedy homeowners team up with moralizing environmental
and historical conservationists, affordable housing advocates, etc. to
generate a maze of regulations. Changing that likely requires convincing
the average pundit to treat most conservationists and affordable housing
advocates with the kind of disrespect that Erdmann does. We\'re a long
way from reaching that kind of broad support for more housing. [Startup
cities](https://profectusmag.com/startup-cities/) sound a bit more
promising, but would require handling major coordination challenges in
order to replace existing cities.

How has the pandemic affected the housing shortages? It triggered a
sizable one-time exodus from big cities, but that effect seems small
compared to the long-term trend of people increasingly preferring to
live in or near big cities. It increased acceptance of remote work,
which will put some sort of dent in the unequal access to the most
lucrative jobs. But I expect that there are still nontrivial advantages
to in-person contact with social and professional groups, which will
maintain some of that inequality for quite a while.

Are houses a good investment now? Erdmann makes a decent case that
there\'s a moderate amount of [pent-up
demand](https://www.idiosyncraticwhisk.com/2019/11/a-look-at-trends-in-homeownership.html).
I expect that increased inflation will cause a moderate shift in
investments from bonds to real estate. Those factors are not yet fully
offset by demographic effects and rising interest rates.

So for now, I have investments in home building companies, and in REITs
that own residential mortgage backed securities. But I still rent rather
than own a home. Rising real interest rates may well convince me to
avoid housing-related investments in a few years.

### Conclusion

Many factors influenced the Great Recession. Erdmann\'s ideas provide a
valuable new perspective, but he goes a bit overboard about dismissing
the standard narratives.

I\'ve quoted him a good deal here because of his eloquent rants against
the systemic classism of the elites, but beware that the book also
contains some mind-numbing detail to support those rants.

> The fact that the housing supply problem has developed during the same
> period of time in several cities (and, in fact, many cities with
> similar profiles, internationally) suggests that something structural
> and specific to our time is at work. \... In the end, the solution
> won\'t come from one faction overpowering another so much as from
> changing the political structure that enables those factions.
>
> The same problem exists in the reactions to credit markets. Causation
> for the housing bubble is frequently assigned to individual choices of
> bankers and homebuyers - anecdotes about unsophisticated buyers being
> pushed into homes that were too expensive, flippers greedily and
> recklessly bidding up prices in a speculative frenzy, bankers
> unloading increasingly toxic mortgage securities. As with the
> political activities in the local housing disputes, these activities
> create a disgust response, and their causal import tends to be
> overstated.

> The evolution of capitalism has led to almost universal acceptance of
> middle-class values. Whereas the elite of most societies have sought
> control and leisure, these few modern open access societies have a
> citizenry that seeks to be productive, to cooperate, and to innovate.
> It is common to hear complaints that wealthy children today have an
> unfair advantage because they can access the best schools, get the
> best education, and therefore perpetuate inequality by working in the
> most lucrative careers. But everyone should appreciate how
> revolutionary this is. Elites of the past would scoff at the notion
> that this even describes elites. Elites don\'t need to be productive.
> Elites have access and control.

H/T an [anonymous
review](https://docs.google.com/document/d/1M1m8o1HInGYJR3cEMYZ6TQgNmeBOWo98YC6djNnFWf0/edit#heading=h.g439tsy8wl32)
from the ACX book review contest.

P.S. Scott Sumner has just published a new
[book](https://www.goodreads.com/book/show/55623588-the-money-illusion)
which I expect does a better job of explaining monetary policy in this
time period.