You can expect to see an endless range of evaluations from different people over the next two years. Some people might say housing should go down, and some up. It's impossible to say what the percentage change each evaluation would be.
It's my evaluation that the primary markets along the coastal cities will continue to lead the rebound with another 10-20% of gains over the next two years. Much of that is driven by foreign interest and monetary stimulus. As we go into secondary and tertiary markets or just away from the coasts, I see gains being more subdued, probably in the 0-10% range as interest drops in those properties and fewer buyers can qualify for loans to take advantage of the stimulus.
Of course, there are always going to be pockets that jump far away from that range. Just watch any oil or coal producing area.