[lazyasciiart]

I might have been thinking of a different definition of 'common' than you were. I don't doubt that more than one person like this exists, but nobody who has attempted to study this has found that the vacancy rate is significant. e.g http://www.spur.org/sites/default/files/publications_pdfs/SP... (from 2014), https://www.mercurynews.com/2018/03/12/empty-homes-a-califor... (actual data from the Census is at https://www.census.gov/housing/hvs/data/rates.html)