Yale Economist and housing guru Robert Shiller says that he doesn’t think the U.S. housing market is in “boom territory”, but he does compare the current environment to the start of the late 1990s/early 2000s housing boom . Shiller tells FOX Business Network that he thinks home prices will probably keep going up for another six to 12 months. But after that, he says he’s not sure, as he’s worried that an environment of housing shortages and record-low rates, which were driving prices higher, is ending.