My post last week on the case for homeownership as an investment has received some good feedback (the e-word is hereby banished from this blog), a good chunk of which has been constructively critical. While I responded to specifics in comments, I also wanted to supplement the post by fleshing out the remainder of the argument and adding a couple of points.

It has been pointed out to me that there are certain costs – mostly taxes, insurance, and maintenance – that weren’t included in my spreadsheet and only implicitly in my analysis. This is – for the most part – true! I did handwave away depreciation, as much for the sake of simplicity as anything, but I only touched on the other two to the extent that they’re wrapped up into the rent counterfactual. Let’s delve into that some more.

Rent – the price of shelter to non-owners – is in the simplest analysis driven by the same things that drive all markets prices: supply and demand. That means rents aren’t directly responsive to the costs of housing, but those costs do impact the supply curve. If the costs of creating and renting new housing can’t be justified by rents, then supply will not rise even if demand does, driving up prices until they are so justified. Therefore, in general we should expect the costs of renting shelter to be similar (though not equivalent) to those incurred by the owner of the same. In fact, I bet if you play around with The Upshot’s ‘Buy vs. Rent’ calculator, you’ll find that housing and rental costs are very similar.

This brings me to my next point; while people have pointed out what costs I didn’t include, fewer have mentioned the benefit I didn’t include in my analysis, even though that benefit is much vaster. I focused solely on the capital gains returns of buying a house to demonstrate the power of leverage, but the huge share of the returns to a house are the rents you receive as an owner. This is central to any complete case in favor of homeownership. It is further worth noting that these imputed rents are, in fact, an enormous share of our economy.

a vampire weekend song entitled "david ricardo"

Net imputed rents, as I pointed out in my Piketty thinkpiece which seriously you must have read this thing by now also tend to be fairly stable, returning between 4-6% of the house’s price over time.

seek those rents seek them hard 

This chart actually understates the stability of imputed rents (as the former chart makes clear) since most of that volatility is driven by volatility in the denominator. For context, here’s the Case-Shiller index, since basically forever (with bonus real interest rate series):

 oh hai the aughties

While volatility has more recently increased (consider that my application for the Understatement of the Year Award), note that houses, at the very worst, tend to be inflation proof (the Case-Shiller is a real, not nominal, index) – an asset whose nominal price grows alongside inflation while consistently returning 4-6% annual net returns is, hey, not too bad, and if you can use tax-privileged leverage to buy it, not too bad at all. Especially since we’re going to pay a bundle for housing no matter what we do:

 what would a cake chart look like

…using housing as a vehicle for savings makes an additional sense.

That leads me to an additional point on volatility; here’s Shiller’s stock price index, also since basically forever:

 oh hai the 20s oh and the 90s hello

That looks a lot more volatile than house prices, huh? Which brings us to a key point – as asset price volatility increases, so does the importance of investment timing. This, as Neil Irwin recently noted, can make long-term averages of returns misleading.

seriously though fuck umberto nobody likes that guy anyway

While his examples are obviously stylized, they clearly-enough make the point that otherwise-identical savings behavior in a volatile market can achieve vastly different outcomes depending on the timing of returns even holding long-term average returns constant. Therefore, the relative stability of housing returns – prices + rents – helps savers reduce long term risks.

I want to conclude, though, by taking a major step back and examining the whole purpose of this exercise. When we’re talking about savings from a consumer perspective (not from an investment perspective) what we’re talking about is retirement; and when we’re talking about retirement, we’re always talking about the same somewhat-odd phenomenon. When a person retires, they cease all economic production through labor, yet continue to demand a share of the economic output of their society. We tend to view these claims as just and deserved because they are made by the elderly, who we feel have earned it/are unable to work/are generally venerable (as opposed to similar claims from the non-elderly poor, which we treat very differently) but that doesn’t change the underlying structural nature of the phenomenon, in which we are trying to ensure that a substantial portion of the adult population is consuming an broadly-equally-substantial portion of present economic output while providing no inputs.

Debates about savings and retirement, therefore, are all about how to structure this phenomenon – specifically, what network of programs, policies, mechanisms, incentives, and behaviors we want to establish to justify to the working and capitalists that a portion of their labor and capital outputs be directed to the non-working old, which we often do by creating mechanisms that somehow tether those portions of redistributed present income to guarantees of future income. All governments in wealth nations do this, and the ways in which they vary are influenced heavily by politics, ideology, and other socioeconomic factors. In the United States, our prevalent ideology around a certain kind economic freedom means we tend to be less generous in direct public redistribution and instead attempt to subsidize private savings through the tax code and public insurance – ergo, 401(k)s, the home mortgage interest deduction, and the Pension Benefit Guaranty Corporation. Indeed, the increasing prevalence of that ideological strain is driving defined benefit plans into extinctions in favor of defined contribution plans.

good thing we don't have unions anymore

This leads us to many debates about the best savings vehicles for middle class Americans, yet those debates are to a decent extent a red herring – the vast majority of retirees receive the majority of their retirement income from Social Security, and for many, it’s all the income they have – though to be consistent, I’m nearly certain the figures in the chart below don’t include imputed rents, though I could be wrong, and this is important because 80% of seniors are homeowners:

society secured 

This is very good evidence for the proposition that a vastly disproportionate share of the private-savings-for-retirement subsidy network flows to those who need it least. And it suggests that questions like “houses v. stocks” are, for many Americans, mostly a red herring – if we want to put more money in the hands of retirees, we should simply make Social Security more generous – or, in a better world, maintain it at its current level of generosity while implementing a Universal Basic Income.