These all are newer houses with very little maintainance. I have seen several of them. In fact (being a RE investor) I looked at one of them today - beautiful, empty, and up for foreclosure auction next Monday. Opening bid is $130k less than the mortgage. The court-appointed property mgmt. company has been taking care of maintainance, repairs, upkeep, and holding the rents pending the outcome of court.
WOW, I had heard the LV RE market had went soft, but that is just plain ugly.