America's 132 Million Homes
How Old Are They Now? The median age of a home built in the United States is 40. In 1974, when those houses were built, interest rates on 30 year fixed mortgages averaged 9.1%, but the median existing home price was only $32,000!
Source: The U.S. Census Bureau's 2011 Housing Profile, published July 2013, which examines owner-occupied housing and homes in the single family, multifamily, and manufactured/mobile categories.