Are you considering renting out your spare room to make some extra cash? Whether you’re a homeowner or a renter looking to share costs, taking in a flatmate (roommate) can seem like a financial win. That is until you find yourself frantically Googling, “How to evict someone who keeps leaving wet towels on the sofa?”

Renting out a room isn’t always as easy as it sounds, but if you plan carefully, it can be a rewarding side hustle.

What I Learned About Having Flatmates (The Hard Way)

1. Google Is Your Secret Weapon

Before letting someone move in, do a little light online stalking (Facebook is a good tool). Trust me, it’s not creepy—it’s smart. A quick search saved me from a potential flatmate with a history of unlawful behaviour. And another who had a Facebook profile filled with expletive-laden rants from people accusing him on not paying his debts.

The internet is a goldmine for spotting red flags. If someone’s social media screams “drama,” you probably don’t want that energy in your living room.

2. Red Flags Start During Viewings

Some people are experts at wasting your time. I once had a potential flatmate show up 1.5 hours late for a viewing (at 9pm – yep, I’m still salty). After I told him he wasn’t the right fit, he text a week later asking if we could have a dinner date. Creepy, right? Another time, a potential tenant didn’t show up at all. After I texted, “Hey, are you still coming?” they asked if they could come the next day instead. (No, you can’t.)

Here’s the thing: a house viewing is like a job interview. If they’re unreliable when they’re trying to impress you, don’t expect them to be model tenants once they’ve moved in. Treat tardiness or flakiness as deal-breakers.

3. Set Ground Rules Early (and Stick to Them)

Assuming everyone knows how to clean up after themselves is a rookie mistake. Trust me, scrubbing someone else’s crusty noodles off the sink is not a fun way to spend your evenings (and ultimately led to one of my flatmate being evicted).

Before anyone moves in, establish clear boundaries:

• Who cleans what, and how often?
• Are there rules for noise or overnight guests?
• What’s the policy for shared spaces?

Setting expectations upfront can save you from passive-aggressive Post-it notes (or full-blown arguments) later.

4. Think Twice Before Flatting with Friends

Living with friends might sound ideal, but it can be a recipe for disaster. Just because you get along on a night out doesn’t mean you’ll vibe when it comes to splitting bills or cleaning the bathroom.

Case in point: I once had a 10-year friendship end over an argument about a dehumidifier. Yes, a dehumidifier. Living together can magnify even the smallest annoyances, so think carefully before risking a friendship.

5. Always Ask for a Reference

If possible, get a reference—ideally from a previous landlord or property manager. Just remember, people will only give you contacts who are guaranteed to say nice things. No one’s volunteering the landlord they ghosted after leaving unpaid rent and a hole in the wall.

Take glowing reviews with a grain of salt, and ask specific questions to uncover the full picture.

Why a Flatmate Agreement Is Non-Negotiable

Think of a flatmate agreement as a prenup for your living situation. It won’t prevent every conflict, but it provides a clear framework to resolve issues (one may be required depending on your jurisdiction anyway). Make sure your agreement covers the following at a minimum:

• Rent Details: How much, when it’s due, and how it’s paid.
• Bond: Will they pay a deposit, and how much?
• Notice Period: How much notice is needed for them to leave—or for you to ask them to move out?
• Bills: Are utilities included, or will they be split?
• Shared Costs: Will they chip in for essentials like toilet paper or cleaning supplies?
• Chores: Who’s responsible for what?
• Food: Are groceries shared or separate?
• Guests and Noise: Are overnight guests allowed, and when should the house be quiet?

Putting all this in writing minimizes misunderstandings and gives you something to fall back on if issues arise.

Pros of Renting Out a Spare Room

• Financial Perks: Bringing in a flatmate can boost your budget. Depending on your location and room size, you could earn an extra $200–$300 per week. Plus, sharing bills means less financial stress overall. But don’t forget you may need to pay tax on any income you receive.
• Shared Responsibilities: You won’t have to tackle all the chores alone (assuming your flatmate sticks to the agreement).
• Social Benefits: You might make a new friend—or at least have someone to binge-watch Netflix with.
• Flexibility: You set the terms, making it easier to find a situation that works for you.

Putting all this in writing minimizes misunderstandings and gives you something to fall back on if issues arise.

Cons of Renting Out a Spare Room

• Privacy Loss: Say goodbye to dancing in your PJs at 2 a.m. (unless your flatmate joins in).
• Potential Drama: From cleaning habits to noise levels, sharing a space can create tension. I once had flatmates who turned the lounge into a battleground for an egg fight (yes, really) and another who spilled bourbon all over my TV without cleaning it up. Oh, and let’s not forget the time my mugs mysteriously ended up halfway down the street after a party.
• Risky Business: Even with a flatmate agreement, there’s no guarantee they’ll pay rent on time or be respectful.
• Extra Stress: Managing someone else’s behavior can feel like an unpaid part-time job.

Is Renting Out a Room a Good Side Hustle?

Let’s break it down:

• Startup Costs -(9/10): If your spare room is ready, the costs are minimal.
• Time Commitment -(6/10): Screening applicants takes time, but once you find the right fit, it’s mostly hands-off.
• Income Potential -(8/10): Renting out a room can provide a consistent, reliable boost to your income. However, do keep in mind wear and tear on your house and furniture.
• Fun Factor -(4/10): Some flatmates are a delight; others… not so much.
• Flexibility -(7/10): You control the terms, but sharing your space can feel limiting.

Overall Rating:(7/10)

Renting out a spare room is a solid side hustle with good earning potential, but it’s not for everyone. If you value your privacy or hate confrontation, this might not be the right fit.

Final Thoughts: Is Renting Out a Room Worth It?

If you’re looking to boost your income and don’t mind sharing your space, renting out a spare room can be a smart move. Just go in with your eyes wide open. Do your research, set clear boundaries, and trust your gut when it comes to red flags.