Today more than 4.4 million American households that have three generations or more living under one roof. An estimated 51.4 million Americans currently live in homes with more than two generations. According to the U.S. Census Bureau, multigenerational households are a growing trend, up 30 percent between 2000 and 2010, a figure that will only continue to grow, experts say.

?We?ve seen a 25 percent increase in demand for multigenerational housing structures over the past two years and expect to see more,? said Luis Tusino, CEO of the GBI-Avis building group, which specializes in building custom modular homes.

Many families have gone to great lengths to accomodate so many generations, adding on separate wings to make their homes larger and friendlier to each family’s personal space.

Though factors such as high unemployment, a battered economy and the recent housing crisis have pushed more people into multigenerational living, studies show that it?s a trend that?s circled back from a similar era.