Roommate Agreements: Rent, Bills, Guests and What Happens If Someone Leaves

A roommate agreement is a written set of house rules between people who share a rental. It does not replace the lease, but it can prevent arguments over money, chores and guests.

Topics to cover

• Each person's share of rent, utilities and internet.
• How and when payments are made, and who collects them.
• Security deposit and how it is divided.
• Guests, quiet hours, smoking and pets.
• Cleaning and shared supplies.
• What happens if someone moves out early and how a replacement is chosen.

Relationship to the lease

If all roommates sign the lease, each is often responsible for the entire rent, not just a share. The landlord can pursue any of them. A roommate agreement mostly governs the relationships between the roommates themselves. See our guide on what happens when a roommate leaves.

Tips

1. Write it before problems start.
2. Have everyone sign and keep a copy.
3. Take move-in photos together.
4. Agree how to resolve disputes.
5. Ask the landlord before adding or replacing a roommate.

Limits

• It cannot override the lease or local law.
• Illegal terms are unenforceable.
• Small claims court may hear disputes between roommates over unpaid shares.

Splitting bills fairly

Equal splits are simple but can feel unfair if one roommate uses more, has a larger room or is home more. Some households split rent by room size or amenities, and utilities evenly. Whatever method you choose, write it down. For shared bills, use one person as the account holder with the others paying by a fixed date, or use a bill-splitting app that keeps a record of who paid and when.

Setting a house rules sheet

• Quiet hours on weeknights and weekends.
• Guests: how much notice and how many nights in a row.
• Cleaning schedule for kitchen, bathroom and common areas.
• Storage in fridge, pantry and shared spaces.
• Noise, parties, smoking and substance use.
• How to raise problems respectfully.

Handling shared purchases

1. Agree on a shared budget for household items.
2. Keep receipts and reimburse promptly.
3. Decide who owns shared furniture and what happens when someone moves out.
4. Label personal items.
5. Do a regular check-in to settle accounts.

Legal reality: you may all be responsible

If every roommate signed the lease, each may be responsible for the whole rent and for damage even if another roommate caused it. Roommate rules and bill-splitting arrangements help the roommates, but they do not change what the landlord can demand. See our guides to roommate agreements and what happens when a roommate leaves.

When things break down

• Talk early and in writing.
• Try a mediator or a trusted third party.
• Document unpaid shares and ask for payment in writing.
• Small claims court is an option for money owed.
• Do not change locks or remove someone's belongings without legal advice.

Terms to know

• Common areas: shared rooms such as the kitchen.
• Utilities: services such as electricity, water and internet.
• Split: how costs are divided.
• Chore chart: a schedule for cleaning.
• Guest policy: rules for visitors.
• Cost sharing app: a tool for tracking shared expenses.

Scenarios

1. One roommate works from home and uses more electricity. The household agrees on an adjusted split.
2. A guest stays for weeks. The guest policy limits stays or requires approval and cost sharing.
3. A roommate leaves dishes in the sink. A chore schedule and polite reminders resolve the issue.

Frequently asked questions