By Rich Arzaga, CFP®, CCIM , The Real Estate Whisperer® The map and data referenced in this article were compiled and visualized by Visual Capitalist , using housing affordability data from the Globe and Mail . The Metric That Explains Housing Affordability Rather than focusing on headline home prices, this analysis relies on a simple but powerful measure: Price-to-Income Ratio The Price-to-Income Ratio  compares the median home price in a metro area to the gross median house