One thing I've always wondered is why we as a society even let real estate be a thing that people can buy a lot of. Why does an individual get to buy, say, 10 buildings and rent them? The title "land lord" even seems like a holdover from some feudal time.
Not that I think you completely outlaw the practice, but why not start taxing after, I don't know, you own 20 units or something. Just figure out some sort of scheme that disincentivizes people from hoarding a resource required for life. I'd much rather rent from someone that lived in the building and actually cared for the place than some random LLC in Florida I mail checks to that can't be bothered with anything.
Rent seeking is hard to eliminate, there has to be some way for lazy aristocrats to feel safe in their complacency. Try to remove it and the sleeping dragon gets very angry.
Not that I think you completely outlaw the practice, but why not start taxing after, I don't know, you own 20 units or something. Just figure out some sort of scheme that disincentivizes people from hoarding a resource required for life. I'd much rather rent from someone that lived in the building and actually cared for the place than some random LLC in Florida I mail checks to that can't be bothered with anything.