The “boomerang generation” has been around for two decades, and it does not appear to be going away anytime soon. Young adults today are more likely to live with their parents than previous generations did, according to analysis published in 2017 by the Pew Research Center.

The continuing trend has created a need for guidelines on how to manage their stay and how long it should last.

Mariana Martinez, a family dynamics consultant with Wells Fargo Private Bank who has compiled a list of recommendations, said the focus should be on the new household dynamics, not on who does the dishes or pays the electric bill.

“It’s more about the relationship and less about the financial details,” Ms. Martinez said. “The relationship with an adult child who moves back home has to change from what it was in high school and college.