Flatmate Contracts: Why Setting House Rules in Writing is the Smartest Move You’ll Make

Flatting in New Zealand can be fun, affordable, and even life-changing. It’s where lifelong friendships form over shared dinners and couch hangouts. But it can also turn sour—fast. From arguments over unwashed dishes to silent tension over unpaid bills, many flatmates find themselves in conflict without ever having agreed on basic expectations in the first place.

That’s where a flatmate contract comes in.

While not a legal tenancy agreement (more on that below), a flatmate contract or house agreement is a simple, written understanding between everyone living in the same home. It’s one of the most effective tools for preventing conflict before it starts—and for resolving it fairly if it does.

Why Bother With a Flatmate Contract?

Even if you’re flatting with friends—or especially if you are—having rules in writing is a smart move.

• Clarifies expectations so no one can say “I didn’t know”
• Reduces passive-aggressive drama around chores, bills, and noise
• Gives everyone equal footing in shared decision-making
• Makes new flatmates feel included and clear on house culture
• Avoids financial fallout if someone moves out suddenly or doesn’t pay their share

No, it’s not legally binding like a tenancy agreement—but it’s a mutual agreement that makes everyone more accountable. And when the unexpected happens, a written agreement is far more useful than a memory of a conversation.

What’s the Difference Between a Tenancy Agreement and a Flatmate Agreement?

• A tenancy agreement is between tenants and the landlord. It outlines rent, bond, responsibilities, and compliance with tenancy law.
• A flatmate agreement is between the people living in the house. It sets expectations around how to live together peacefully—think shared expenses, cleaning rosters, and guests.

If you’re not on the official tenancy agreement (e.g. subletting or moving into an existing flat), having a flatmate agreement becomes even more important to protect your position.

What Should a Flatmate Contract Include?

Here’s a list of topics to cover. You don’t need to be formal or complicated—just make it clear, written, and agreed upon by everyone.

1. Rent and Bills

• How much each flatmate pays and when
• What’s included (e.g. internet, power, water)
• How bills are split and who pays them
• What happens if someone pays late

2. Bond and Moving Out

• How much bond each person has paid (if applicable)
• How to handle repayment when someone moves out
• How much notice is required to leave (e.g. two weeks)

3. Cleaning and Chores

• Shared areas and personal responsibilities
• Roster system or agreed expectations
• Cleaning supplies—who buys and when

4. Guests and House Rules

• How often guests can stay over
• Overnight guests—what’s OK, what’s not
• Noise expectations and quiet hours
• Use of shared spaces (e.g. “No music in the lounge after 10 pm”)

5. Food and Shared Items

• Are groceries shared or separate?
• Shared staples (milk, oil, TP)—who buys?
• Labelled shelves or open-door fridge policy?

6. Conflict Resolution

• How to raise concerns (e.g. flat meeting, group chat)
• Agreement to address issues directly and respectfully

Conversation Starters for Creating Your Agreement

Starting this conversation can feel awkward, especially in a new flat. But approaching it early and positively sets a great tone.

Try these lines:

• “Hey, I thought it’d be cool if we set up a quick house agreement so we’re all on the same page—keen to chat about it?”
• “Would you be keen to jot down a few house rules together so we don’t run into any confusion down the track?”
• “Just to avoid the classic flat drama, I’ve got a quick checklist we could all fill out. Want to go over it together one night this week?”

This is about preventing problems, not policing each other.

Top Tips for Co-Living Success

• Review your agreement every few months, especially if someone moves out or new people move in.
• Use shared tools like Splitwise to manage expenses transparently.
• Have regular check-ins or flat meetings to clear the air and keep communication flowing.
• Keep a copy of your agreement somewhere everyone can access it, like a shared drive or pinned group chat message.

Final Thoughts: A Little Agreement Goes a Long Way

Flatting doesn’t have to mean late-night arguments about dishes or awkward WhatsApp messages about overdue bills. With a flatmate contract, you’re building a home based on trust, communication, and mutual respect.

It’s not about creating rules—it’s about creating clarity. And in a shared living space, that’s the best foundation you can have.

Take an hour, have the chat, and write it down. Your future self (and your future housemates) will thank you.