TL;DR: Most roommate conflicts come from unspoken expectations. Clarify these 10 things before you sign a lease — it saves months of frustration.

1. Sleep habits and noise levels

Your sleep rhythm sets the frame for most other things — when you cook, how loud you play music, and when there's quiet in the flat. An early riser and a night owl can live together — but only if they know what they're getting into.

2. Cleaning and household chores

Cleaning is the classic source of roommate conflict. One person thinks the kitchen is "fine". The other can't relax with a spoon in the sink.

You don't need a detailed house constitution. But you do need a basic shared understanding of what "clean" actually means.

3. Guests and visitors

How often do friends come over? Does your partner sleep over regularly? Do you host parties? It affects your roommate's daily life more than you might think.

4. Finances and bills

Money can ruin even the best roommate relationship without clear agreements from the start. Rent is typically split 50/50 — but not always if rooms differ significantly in size.

5. Kitchen and cooking

The kitchen is the heart of the home — and the most conflict-prone area. Do you shop together or separately? Is it OK to "borrow" each other's food? How long can dishes sit in the sink?

6. Personal boundaries and privacy

You share a flat — but you both need your own space. Do you knock before entering each other's rooms? How do you prefer to be greeted when you come home?

7. Pets and allergies

One of you has a pet? Clarify that early. Many Danish rental agreements explicitly prohibit pets, and breaking that clause can cost you your deposit.

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10 Things to Clarify With Your Future Roommate Before Signing

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