Dealing With a Bad Roommate in Toronto: What to Do

Dealing with a bad roommate in Toronto usually comes down to three steps: raise the problem early and specifically, put what you agree in writing, and escalate only if that fails, through mediation, Small Claims Court for money, or the police for safety. Your legal options depend heavily on who is on the lease, so figure that out before you threaten anyone with eviction.

This guide covers the most common roommate problems, how to talk about them, and what the law in Ontario does and doesn't let you do.

Key takeaways

• Most problems are fixable with a direct, specific conversation and a written follow-up.
• Who is on the lease changes everything. Co-tenants, roommates who rent from a tenant, and people living with the owner have very different rights.
• Roommates can't evict co-tenants or change the locks on them.
• Money disputes between roommates usually go to Small Claims Court, not the Landlord and Tenant Board (LTB).
• Safety comes first. Call 911 if anyone is in danger.

Common roommate problems and how to raise them

How to have the conversation

1. Pick a calm moment. Not at 1 a.m. in the middle of the noise.
2. Be specific. "Dishes have been in the sink since Tuesday" works better than "you're messy."
3. Say what you need. "Can we agree the sink is clear before bed?"
4. Listen. Your roommate may have a complaint too, or a reason you didn't know about (a new night shift, for example).
5. Agree on one change and a check-in date.
6. Confirm it in writing. A short message in the group chat creates a record: "As discussed, quiet hours start at 11 p.m. on weeknights."

If you share with several people, a short house meeting once a month can catch small issues before they turn into resentment.

Put it in writing: the roommate agreement

A written roommate agreement won't bind your landlord, but it gives everyone the same rules and evidence if things go wrong. Cover rent shares, bills, chores, guests, quiet hours and what happens when someone moves out. Our roommate agreement guide and template walks through each section, and our post on guest and partner rules has wording you can copy for the most common flashpoint.

If you didn't write one when you moved in, it's not too late. Suggesting one after a conflict can feel awkward, so frame it as "let's make sure this doesn't happen again" rather than as a punishment.

Unpaid rent and bills

Money is where roommate problems get serious fastest.

• Keep records. E-transfers with notes such as "Nov rent share" and screenshots of bills.
• Send a clear written request: what's owed, for what, and by when.
• Offer a payment plan if the person is genuinely struggling.
• Protect the tenancy. If you're co-tenants, the landlord can generally look to anyone on the lease for the full rent. Paying the shortfall yourself and recovering it from your roommate later may be better than risking arrears.
• Last resort: Ontario's Small Claims Court hears claims for money or the return of personal property worth up to $50,000. Your written agreement and payment records will be your main evidence.

Your legal position depends on who is on the lease

Co-tenants (you all signed the lease)

You each have a right to live in the unit, and none of you can evict the others. Only the landlord can end a tenancy, and in tenancies covered by the Residential Tenancies Act (RTA), that generally means using an LTB notice and, if the tenant doesn't leave, an LTB hearing. One of the LTB's landlord notices, the N5, covers interfering with others, damage and overcrowding, but an eviction can affect the whole tenancy, so it's rarely a neat way to remove one person.

What this means in practice: with co-tenants, negotiation is usually the only realistic path. Often the best outcome is agreeing that one person leaves and a replacement joins, with the landlord's consent.

You're the tenant and your roommate rents from you

If you hold the lease and your roommate pays you, they're often treated as an occupant rather than a tenant of the landlord. Steps to Justice notes the RTA might not apply when you share housing with roommates, but the exact answer depends on your facts. That makes your written agreement especially important. If you want them to leave, give clear written notice in line with your agreement (or reasonable notice if it says nothing), and don't change locks or remove their belongings without legal advice. Steps to Justice's free "Do you share rental housing?" tool can help you work out which rules apply.

You live with the owner

If you share a kitchen or bathroom with the owner, or with the owner's close family who live there, the RTA generally doesn't apply. The LTB can't help either side, and your rights come mainly from your agreement with the owner. See living with your landlord in Ontario for how notice and deposits work in that situation.

Mediation: a neutral third party

When direct conversations stall, a neutral person can help. Options range from a mutual friend everyone trusts to a community mediation service. Calling 211 connects you with community and social services in Ontario and is a good way to find mediation near you. Mediation works best when both people want to keep living together or want an orderly exit. It's not suitable where there's violence, threats or intimidation.

When and how to leave

Sometimes the healthiest solution is for someone to move out.

• Co-tenants: the N9 is the tenant's notice to end the tenancy. One co-tenant serving an N9 can affect everyone on the lease, so talk to your roommates and the landlord before anyone signs one. A replacement roommate, sublet or assignment needs the landlord's consent. See ending a tenancy with an N9 for timing.
• Roommate of a tenant: follow the notice terms in your roommate agreement and settle your deposit share before you go.
• Living with the owner: follow your agreement, or give reasonable notice if it's silent.

Whoever leaves, agree in writing on the move-out date, the final rent and bill shares, and how any deposit contributions are repaid.

When to call the police or get legal help

Call 911 if anyone is in immediate danger, there's violence or a threat of violence, someone is breaking in, or there's a fire or medical emergency.

Call the Toronto Police non-emergency line for non-urgent crimes, such as a roommate taking your belongings or ongoing harassment.

Call 211 for a mental health crisis. The City's Toronto Community Crisis Service sends trained crisis workers, without police, to people 16 and older, 24 hours a day.

Get legal help if someone is threatening to lock you out, you're being asked to leave and aren't sure of your rights, or a lot of money is involved. Community legal clinics funded by Legal Aid Ontario give free or low-cost advice; call 1-800-668-8258 or use LAO's online directory. For questions about LTB processes, the LTB's line is 1-888-332-3234.

Avoid the next bad roommate

Most roommate conflicts trace back to mismatched expectations about money, guests, cleanliness and sleep. Ask the hard questions before you move in; our list of questions to ask a roommate is a good start. On ColivEase, matching is based on area and commute, budget, move-in date, whether you're a student or working, gender preference and shared language, and you can chat before you commit. Find compatible roommates on ColivEase.

Bottom line

Raise problems early, be specific, and write down what you agree. Know which category you're in, because co-tenants can't evict each other, roommates of a tenant depend on their agreement, and people living with the owner usually fall outside the RTA. Use Small Claims Court for money, the police for safety, and a legal clinic before you take any step you can't undo.

This article is general information, not legal advice. For your specific situation, contact the Landlord and Tenant Board or a community legal clinic.