Although it was common in much of the 19th and early 20th centuries, extended families living together became less so following the post-World War II baby boom. Now, due to a combination of economic, cultural, and social forces, a growing share of American households has three or more generations of the same family living under the same roof, reports Aaron Terrazas of Zillow Research. For the remodeling industry, this means that projects ahead will focus on making homes designed for homeowners taking in their aging parents.
In 2015, 3.2% of households were multigenerational, compared to 2.6% in 2006
Extended families are increasingly driven to live together in part as a way of easing housing affordability, and it is also a much more common phenomenon among rapidly growing Asian and Hispanic households.