Homes values in the nation grew from $1.7 trillion in 2014 to $27.5 trillion in 2015, appreciating 6.7% year over year, according to Zillow(Z). Home prices increased 85% in 2013. Per Business Insider:  

 "Looking at the total value of the U.S. housing stock proves just how huge and important the housing sector is to the overall economy," wrote Zillow Chief Economist Stan Humphries in a press release. "Virtually nowhere else will you see gains of more than a trillion dollars in one year represent only single-digit percentages of the total market.

Houston led the nation with homes worth $353 billion, a 13% increase, the article reported. This was followed by Atlanta ($373 billion, up 10.5%) and San Jose ($544 billion, up 10.2%).