Over the years several studies have shown that Mumbai is one of the most expensive cities in the world in terms of real estate. The capital city of New Delhi isn't far behind. That leaves two out of the four major metro cities in India. Kolkata isn't much of a real estate hub and finally, there is the southern city of Chennai.Down south, Chennai is one of the biggest and most cosmopolitan cities. Real estate in Chennai may not have hit the Mumbai/Delhi value, but is picking up pace to...