I'm not sure what they are measuring here. Percent of homes that a rented vs. owner-occupied, I guess. If so, it shows a trend towards MORE owner-occupied homes in much of the city? That's an interesting finding.

What this doesn't show is what percentage is rental. It could be that the rentals in the fringes were very low, and are adjusting to a more normal percentage? Without knowing the underlying percentage of rentals, the change is interesting -- but doesn't tell us much.