In major cities across the world, the average housing price has stagnated for the first time since 2012, while the median price-to-income ratio has continued to grow. In other words, housing may not cost more than it did last year, but in many places it is less affordable. This UBS report dives into global real estate data to figure out where real estate is correctly valued, where it’s overvalued, and where there is the risk of a bubble.