While I'm on the subject of duplexes, Austin has always struck me as having an unusually large number of duplexes. I finally got around to looking up the numbers. Duplex units make up 5.3% of Austin's housing stock. By comparison, they make up just 1.8% of Houston's stock, 1.7% of Dallas's stock, and 2.2% of San Antonio's stock.* Austin thus has more than three times as many duplexes as Houston or Dallas (relative to the total housing stock), and more than twice as many as San Antonio.
Why?
I'm no
