After this post, I promise to stop continually plugging the work and writing of Aziz Sunderji — at least for a few days. Over the weekend, I wrote about his recent post on happiness in America. Today, his latest post is about what happens to home prices after a particular grocery store opens. And for this, he looked at 32,000 store openings dating back to the mid-1970s and then compared them to ZIP-code-level home price data.

Here's what he found:

The average Walmart neighbourhood in this study has a median household income of $49,000, a college degree attainment rate of 23%, and a median home price of $144,000. And when a new Walmart opens, home prices have tended to underperform the national average by about 4% in the three years that follow.

On the flip side, the average Trader Joe's neighbourhood has a median household income of $82,000, a college degree attainment rate of 52%, and a median home value of $425,000.

Importantly, though, Trader Joe's isn't just picking neighbourhoods with obviously favourable demographics (retail is a lagging indicator — it generally comes once the demand is already there). It seems to be picking neighbourhoods that, in the words of Aziz, have "room to keep running." In the three years that follow a new Trader Joe's opening, homes in those ZIP codes have tended to outperform the national average by 6%!

One of the fascinating things about this finding is that it seems to perfectly support the company's target market. It has been said that Joe Coulombe (founder of the company) used to describe his target customer as "overeducated and underpaid." In other words, he actively targeted university graduates.

But being underpaid only lasts so long. We know that educational attainment is typically the single best predictor of household income. So, if you target this group, chances are that they'll eventually become fairly paid or maybe even overpaid. And when this happens, I guess it shows up in area home prices.

Cover photo by Karolina Bobek on Unsplash

Chart from Home Economics

Last year was a pretty good year for people who own a home in the US (or in Canada and many other places). Current estimates peg the total value of US residential real estate at somewhere around $40 trillion.

But of course, a lot of this real estate has debt on it. The Federal Reserve considers this in their calculation of "homeowner's equity," and so the net number, as of the end of last year, was just over $26 trillion (see above chart). This is up from about $10 trillion in 2012, following the financial crisis.

Not surprisingly, a lot of these gains are accruing to a pretty specific demographic. According to City Observatory, about 67% of residential real estate in the US is owned by non-Hispanic white people. And about 44% of owners are 55 years or older.

Oddly enough, this also happens to be a demographic group with a disproportionate say over the kind of new housing that we're allowed to build in our cities. Scarcity is a very good thing when you already have and own some.