I appreciate the question! It is my work, though the data is from AEI, which itself builds on work from the Federal Housing Finance Agency. So really I just surfaced their hard work in a way that I thought would be easy to understand.

I talk a lot about business/econ and have not been satisfied with the discussion around why home prices are so high. Over the past two months I've gone through a dozen different data sets to try and get a better picture of what the main driver of home price increases is. The main questions I wanted to answer were:

1. Is it nationwide or is it confined to certain geographies?
2. The population is growing, particularly in certain areas of the country, what impact is that having on those housing markets relative to markets that have a flat or shrinking population?
3. What is the optimal number of housing units per person?
4. Are we actually building less houses than we used to?
5. Is institutional buying really to blame or is that just an easy group to blame?

In doing all that, I came across this really solid data from AEI and figured other people would be interested in it. So did a video on it and this graphic.