A good take on multi-generational home building in the Houston market, via the Houston Chronicle:
A record 60.6 million Americans, or about 20 percent of the population, live in multigenerational households, according to a 2016 analysis by the Pew Research Center using data from the U.S. Census Bureau. The analysis defined a multigenerational household as one where two or more adult generations live under one roof, or one that includes grandparents and grandchildren.
Toll Brothers, a luxury home builder that entered the Houston market in 2009, immediately saw a demand for this housing niche.
"We quickly recognized we would sell homes to a higher percentage of international buyers and we began to design options to accommodate their needs," said David Assid, Houston division president for Toll Brothers.
This concept is a selling point for Lennar's NextGen The Home Within A Home, specifically designed for multigenerational living. People who have purchased NextGen homes include adults whose parents may require help with daily living, grandparents who prefer to be near their grandchildren, those with college-age children who plan to live at home, or those who simply want a separate suite for their guests.