Add our current low interest rates to the mix as well and the picture changes dramatically
At this juncture, it seems most appreciation will arise from supply issues, which aren't new to the post-2008 world. And while we do have lots of unoccupied housing nationally, we don't have it stock in areas where it's most needed: e.g, job centers. You can easily find a $10k home in Detroit if you wish.
The graph would be helpful it broke out metro versus rural areas, in addition to factoring interest rates.