Well Gwen…
Let’s say you live in California (Oregon, ie: some lib town), in suburbia. Let’s say you have a $2000 mortgage in a nice area. Well, if you slap together a shack in your backyard, you can rent it out! Yes, another family can come live in the shack you built in your backyard, for say, $800 a month, whatever the market rate is.
As a homeowner, you can bank some more coins. As a renter, people not as financial astute as you can live in the nice neighborhoods for a fraction of the cost! I’m quite sure, this would never cause riff raff to enter great neighborhoods. California would have thought about that, so no worries there! 
So the homeowner benefits and it provides cheaper housing for all.
Act now! Big Momma’s waiting…
