Families across the country are increasingly opting to live in multigenerational housing. While some people are motivated to preserve cultural traditions or combat loneliness, others are driven by the desire to share or reduce expenses, particularly childcare costs, according to a National Association of Realtors report. The number of Americans living in multigenerational family households is about four times larger than in the 1970s. According to a Pew Research Center’s analysis of census data, the share of the U.S.