I think the 81% group would also include unocuppied houses, right?
Doing the same search for "owner occupied" shows only around 50%, though. I don't know where to get the data that teases apart housing units and standalone houses.
I know that my main assertion there was it was a relatively lower number. Adding it to the 19 of this story would still leave owner occupied higher than 50ish. Such that I clearly need help to put a lot of this together.