How many people have multiple houses?

[Azurymber]

Just because someone can do something that's not against the rules doesn't mean that they aren't selfish jerks for doing so. And buying houses and flipping them for 100s of millions of gil is actually the only way to get SE to take action against you. They'll almost always look the other way if you are just trying recoup what you spent on a plot originally, but if you jack up the price 4-5 times higher than it's worth and someone reports you for it, SE can and will step in.

Is there like official word on this? There's an entire reddit dedicated to people jacking up prices....