This is a good thing, the next step however is to block the guys that use sites like BiggerPockets.com from buying up more then 5 single family homes. I know a whole bunch of guys who own 10 or more houses. That is excessive. We need to limit all investment of single family housing. Apartment complexes? Be my guest buy all you want, build all you want. But lets keep our neighborhoods full of people who can actually live in them.