I wonder when TOL-like houses (not to be confused with Toll-like receptors:-)) will finally fall out of fashion. Yes, I really mean fashion, which has been a substantial driver for the appreciation of these assets until recently, IMO.
I challenge you to find any time other than the Great Depression when we, as a nation, stepped backwards in house amenities. Size, insulation, air, kitchen, ... . I think we may be forced to temporarily step backwards here just because we, as a nation, over-extended in housing. But in 15 years we'll be buying bigger yet.