To the GP's comment, this could be an artifact of a slow-leak inflation. If inflation leaks in some markets faster than others you would see those markets incr

To the GP's comment, this could be an artifact of a slow-leak inflation. If inflation leaks in some markets faster than others you would see those markets increase in cost and income faster than the average. Boston area condo prices rose 32% from April 2019 to April 2020, at best income increases are keeping pace.