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How to be a good roomie — regardless of where you are in life

Expert advice on how to live with other people.

Chances are good you live with another person. Over half of American adults cohabitate with their spouse or significant other. Older adults are increasingly living with roommates. Multigenerational households have more than quadrupled over the last decade. And about a third of adults under 35 live with a parent.

If you’ve found yourself living communally at one point or another, you know that sharing space comes with its quirks and potential headaches. Who gets to use the only bathroom first in the morning? Who’s responsible for taking out the trash? Do you actually need to be friends with your roommates?

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Being a better roommate or family member isn’t just about minimizing daily annoyance — it’s about transforming your relationships and overall well-being. According to the 2025 World Happiness Report, a household of about four members is predictive of higher happiness levels and better relationships. Older adults who cohabitate are more satisfied living with others, and have higher well-being and happiness than those who live alone, research suggests.

Whether you live with a romantic partner, roommates, parents, grandparents, or other family members, experts (including therapists, authors, friendship experts, and researchers) — who have firsthand experience of their own — have concrete tips for how to communicate, declutter, and split finances with the people you share space with.

Responses have been edited and condensed for clarity.

The couples’ guide to moving in together

Communicate, communicate, communicate

“I will live and die on the hill of communication being the most important aspect of successfully living with other adults. That comes from my experience living with my parents in adulthood, and from working on my anthology about communal living and interdependence. If good communication can ultimately lead to progress, any challenges........

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