How to Write a Roommate Agreement That Prevents Conflict

Sharing an apartment can make city living more affordable and more social. It can also lead to tension over money, dishes and guests. A written roommate agreement will not solve every disagreement, but it gives everyone the same expectations from the start and a calm way to resolve issues later. This guide walks through what to include.

A roommate agreement is usually separate from your lease with the landlord. It does not change the lease, and if everyone signed the lease, each person may still be responsible to the landlord for the full rent. Ask a local tenant resource if you have questions about how this works where you live.

Start with the lease

Before writing anything, make sure everyone understands the lease. Who signed it? Is the lease “joint and several,” meaning each tenant can be held responsible for the entire rent and any damage? Are there rules about guests, pets, subletting or adding occupants? Your roommate agreement should work within those rules, not against them.

Rent: how to split it fairly

An equal split is simplest, but it is not always fair. If one bedroom is larger, has a private bathroom or a balcony, roommates often agree to adjust shares. Common approaches include splitting by bedroom size, by a points system for features, or by simple negotiation. Whatever you choose, write down:

• Each person’s share in dollars
• Who pays the landlord and how others reimburse them, or whether each person pays the landlord directly if allowed
• The date each share is due
• What happens if someone pays late

Security deposit

Record how much each person contributed to the deposit. Agree on how deductions will be shared if they happen, and what happens to a departing roommate’s share if someone moves out before the lease ends. A common approach is that the incoming roommate pays the outgoing roommate directly for their share.

Utilities and shared expenses

List every recurring bill: electricity, gas, water, internet, streaming services and any shared supplies like cleaning products or toilet paper. Decide whose name each account is in and how you will split costs. A shared spreadsheet or a bill-splitting app can make this transparent. Agree on whether high usage, such as running a space heater all winter, should change the split.

Chores and cleanliness

“Clean” means different things to different people, so be specific. Define tasks such as dishes, taking out trash and recycling, cleaning the bathroom, vacuuming and wiping kitchen counters. Then assign them or create a rotating schedule. Agree on reasonable standards, for example dishes washed within a day.

Guests and overnight visitors

Guests are one of the most common sources of friction. Decide how much notice you would like before visitors come over, how many nights in a row a guest can stay, and whether a regular overnight guest should contribute to utilities. Make sure your guest rules also follow the lease limits.

Quiet hours and shared spaces

If one person works early and another works late, quiet hours matter. Agree on a time range for low noise on weeknights and weekends. Talk about how shared spaces are used, like working from the living room during the day, hosting parties, or leaving personal items in common areas.

Food and personal items

Will you share groceries or keep them separate? Agree on whether staples like oil, spices and coffee are shared, and how to label personal food. Also discuss borrowing items such as clothing, electronics and kitchen tools.

Pets, smoking and other lifestyle issues

If the lease allows pets, decide who is responsible for care, cleanup and any pet damage. Address smoking or vaping, which many leases restrict, and any allergies or other health considerations.

Moving out and replacing a roommate

Write down how much notice a roommate must give before leaving, whether they need to find a replacement, and how the remaining roommates get a say in choosing that person. Also note that the landlord may need to approve any new occupant. Clarify how the departing roommate’s deposit share is handled.

Resolving disagreements

Agree on a simple process: talk directly first, then hold a house meeting if needed. Some roommates schedule a short monthly check-in to talk about what is working and what is not before small issues grow. Some communities offer free or low-cost mediation services that can help if things get stuck.

Putting it in writing

Keep the agreement short and readable. Have every roommate review it, sign and date it, and keep a copy. Revisit it when someone moves in or out, or whenever a new issue comes up. Treat it as a living document rather than a rulebook.

Quick roommate agreement checklist

• Rent shares, due dates and payment method
• Deposit contributions and deductions
• Utilities and shared expenses
• Chores and cleaning standards
• Guests and overnight visitors
• Quiet hours and shared spaces
• Food and personal property
• Pets, smoking and lifestyle issues
• Moving out and replacing a roommate
• How disagreements are handled

Spending an evening on this conversation at the start can save many uncomfortable evenings later.