Finding a flatmate can be a smart financial move—and even a fun experience—when you end up living with someone who respects your space, values communication, and shares similar habits. But the wrong flatmate? That can turn your daily life into chaos.

Whether you're renting through iROOMit or looking on your own, these 7 red flags can help you avoid major headaches down the line.

1. They Avoid Talking About Money

If a potential flatmate is vague or uncomfortable when you bring up rent, bills, or deposits—pay attention. It might be a sign they’re not financially reliable.

Look out for:

• Dodging questions about payment deadlines
• Saying “don’t worry about it” when asked how bills will be split
• Not having a clear income source

Why it matters:

Money issues are one of the biggest causes of flatmate fallout. You need someone who’s transparent and committed to shared responsibilities.

2. Their Last Living Situation Ended Badly

Everyone has a story, but if their last flatmate was “crazy,” “toxic,” or “the worst,” and they take no ownership in the situation, that’s a red flag.

Ask questions like:

• “Why did your last living arrangement end?”
• “What worked and what didn’t?”

Why it matters:

People who always blame others may bring that same energy into your space.

3. They Don’t Respect Boundaries

A potential flatmate who jokes about borrowing clothes, using your things, or inviting people over all the time without asking might not be someone who respects privacy.

Warning signs:

• Laughing off shared space rules
• Pressuring you to be best friends instantly
• Being dismissive of your preferences

Why it matters:

Healthy flatmate dynamics start with mutual respect—especially around personal space and privacy.

4. They Have Poor Hygiene or Messy Habits

Take note of how they keep their current space—or ask their past flatmates. A consistently messy person will bring that same habit into your home.

Watch for:

• Clutter in their current living area
• Saying things like, “I’m not a neat freak” (while everything is chaos)
• Leaving trash, dishes, or laundry around during a trial stay

Why it matters:

Messy common areas can create stress, resentment, and constant cleaning battles.

5. They Party Hard—Often

If they bring up clubs, drinking, or loud hangouts frequently in your first few conversations, and it doesn’t match your lifestyle, this might not be the right fit.

Signs to be cautious:

• They describe themselves as “the life of the party”
• Constant loud music
• Hosting guests without heads-up

Why it matters:

Different lifestyles don’t always blend well. If you value peace and quiet, don’t compromise on it.

6. They’re Too Eager to Move In Fast

If someone wants to move in immediately without asking questions, visiting the space, or discussing house rules—it’s a red flag. They may be rushing due to eviction, debt, or instability.

Clues:

• “I can move in tonight if needed!”
• Avoiding lease paperwork
• No references or past rental history

Why it matters:

Rushing often signals desperation, not compatibility.

7. They’re Vague About Their Daily Routine

If they can’t describe what a typical day looks like—what time they work, whether they cook, how often they’re home—it’s a sign they haven’t thought about how they’ll fit into your lifestyle.

Why it matters:

Routine differences are one of the biggest causes of friction. It's not about judgment—it’s about knowing what to expect.

Avoid the Drama—Match Smart with iROOMit

Choosing the wrong flatmate can cost you time, energy, and peace of mind. At iROOMit app our AI-powered matching takes your lifestyle, habits, and preferences into account to help you avoid red flags before they become your problem.

👉 Download the iROOMit app and get matched with verified, compatible flatmates—fast.