11 Questions to Ask a Potential Roommate to Weed Out the Weirdos Fast

2. Are you a morning person or a night person?

Night owls and early birds don’t tend to mix well as roommates. Because you’re on opposite sleep schedules, you might feel you always have to tiptoe around. Research shows early risers and night people have different personality traits and behaviors that can make them clash worse than polka dots and plaid. (Fun, and not entirely surprising, fact: One study found that night owls, on average, consume more alcohol than morning people.)

3. What’s your work schedule?

Ideally your work schedules will be compatible, says Joe DeFilippo, a real estate agent and rental specialist with City Chic Real Estate in Washington, DC. This is especially important if you’re going to be sharing a bathroom, because you want to have ample time to get ready in the morning. (Having a roommate who’s impatiently waiting for you to get out already isn’t a great setup.)

4. Do you have pets?

Hate cats? Allergic to dogs? Well, don’t live with a roommate who has one! If you don’t mind having a four-legged friend around, though, you should still make sure your landlord allows pets, because many don’t.

5. Do you work from home?

Office dwellers might skip this question, but if you’ll be working from home, you should check to see whether you’d have the place to yourself. After all, one of the best things about working from home is that you have fewer distractions from co-workers, but your roommate could prove equally distracting, or even more so if he’s a chatterbox!

6. What do you like to do on nights and weekends?

If you enjoy hosting game night and dinner parties, rooming with a homebody can cause problems. After all, you should be able to entertain at home without feeling like you’re invading your roommate’s privacy.

Asking this question can also help you gauge if your prospective roommate is a party animal who’s going to treat your apartment like a frat house.

7. Have you ever had any issues with rent payments?

A landlord or property management company will usually look into each person’s rental history before approving a roommate, but you should still vet your roommate yourself. Why? Because if your roommate can’t pay his portion of the rent, you’re typically on the hook for paying his share. So, if someone says she’s had trouble paying rent on time in the past—or has had other issues with a previous landlord (e.g., arguments, fines, eviction)—look for a roomie who is more drama-free.

8. Are you in a relationship?

If you don’t want an unofficial third roommate, you need to set clear expectations about how often romantic partners can sleep over. This can become a big issue if your roommate’s significant other is a constant presence in your apartment; at that point, the person should be paying rent!

9. What indoor temperature do you prefer?

This might seem minor, but plenty of folks living in close proximity have strong disagreements over who controls the thermostat. This issue can also present financial concerns—if the person in the next room likes to constantly blast the air conditioning during the summer, for example, you could be looking at a fatter utility bill.

10. How often do you clean?

This is a better approach than asking someone straight up, “Are you a clean person?”—because few people will admit to being a slob. If you’re someone who can’t fall asleep if there are dishes in the sink, make sure you find someone who’s the same way. If you’re both lazy cleaners, you could agree to split the cost of a professional cleaning service once a month.

11. Are you still friends with your old roommates?

You certainly don’t have to become besties to be good roommates, but you do want someone who is pleasant and easy to spend time with. If your prospective co-tenant has had a long string of “bad roommates,” this could be a case of the pot calling the kettle black.