Joint and several vs. several
The most important structural question: are you on the lease together, or on separate leases?
Joint and several
All roommates sign one lease. Each is "jointly and severally" liable — meaning each is fully responsible for the whole rent if others default. Landlord can collect from any one of you. Standard for friends moving in together.
Separate leases
Each roommate signs their own lease for their share of the unit. Common in student housing, some purpose-built rentals. Roommate defaults don't expose you to their share.
Head tenant + subletter
One person signs the master lease; subletters sign sub-agreements with the head tenant. The head tenant is fully responsible to the landlord; the subletter is responsible to the head tenant. The head tenant carries real risk.
For most Toronto condo rentals, the structure is joint-and-several. Choose roommates accordingly — you're on the hook for their share.
What the agreement should cover
A roommate agreement isn't a lease — it's a contract among the roommates, not between roommates and the landlord. It can't modify the landlord-tenant relationship. But it can govern the internal arrangement and is enforceable in Small Claims Court for monetary disputes.
Cover:
- Rent split (by room size, equal, by income — whatever you choose, document it).
- Deposit split.
- Utility split: hydro, internet, gas, water, recurring services.
- Move-in date and term.
- Exit clauses: notice period for leaving, replacement-roommate process, deposit return.
- Common area expectations: cleanliness standards, guest policy, overnight visitors.
- Quiet hours.
- Smoking, pets, substances.
- Shared groceries / supplies policy.
- Dispute resolution process: who decides ties, mediation steps.
- Who deals with the landlord on what (e.g. maintenance requests routed through one person).
Exit clauses — the part that actually matters
Most roommate disputes happen when someone wants to leave early. The roommate agreement should address:
- Notice period. 60 days is standard.
- Replacement-finding obligation. The leaving roommate is responsible for finding an acceptable replacement (approved by remaining roommates and the landlord).
- Default obligation. If a replacement isn't found, the leaving roommate continues to pay their share until lease end (legally true under joint-and-several anyway, but documenting it prevents arguments).
- Deposit return. Deposit returned to leaving roommate when replacement covers their share — not at lease end.
- Lease assignment vs sublet. Some landlords permit assignment (new tenant signs new lease); some only sublet (original tenant remains liable).
Rent split methods
Common splits:
- Equal split. Simplest. Fair when bedrooms are similar.
- By room size. Calculate square footage of each bedroom. Allocate rent proportionally. Fair when bedrooms differ significantly.
- By room + amenity. Master with ensuite premium of $200–$400/month above other rooms.
- By income. Less common in Toronto; sometimes used by families with adult children.
Whichever method, document the math. "We just agreed it's $1,200 for room A and $1,000 for room B" is fine if everyone signs.
Common pitfalls
Avoid these:
- No written agreement. Most common cause of disputes.
- Rent paid to one roommate who pays the landlord. If they default, the other roommates are still on the hook to the landlord. Each tenant should pay the landlord directly when possible, or document the payment chain meticulously.
- No deposit accounting. Document who paid what, when, and how it gets returned.
- Friend-of-friend roommates. The friendship layer makes the legal accountability layer harder. The agreement matters MORE, not less, when you're close.
- Verbal "I'll be the master lease holder; you'll pay me." This puts all legal liability on one person and creates an asymmetry that breaks under stress. Joint-and-several is messier but fairer.
Frequently asked questions
Is a roommate agreement legally enforceable?
Yes — among the roommates. It can be enforced in Small Claims Court for monetary disputes (rent owed, deposit return). It does not bind the landlord, who deals with all tenants on the lease equally.
Can a roommate evict another roommate?
No. Only a landlord (with LTB authorization) can evict a tenant from their leased premises. Roommate disputes resolve through the agreement (and potentially Small Claims). Forcibly removing a roommate is itself a legal exposure.
What if my roommate moves their partner in?
If your lease requires landlord consent for additional occupants, the landlord can object. If your roommate agreement requires roommate consent, you can hold them to it. If neither addresses it: usually the partner can stay as a guest indefinitely, which is why it should be in the agreement.
Do I need a lawyer to draft one?
Not for simple roommate situations. Templates are available from community legal clinics and online (Steps to Justice). For higher-stakes situations (significant rent, family money involved, complex equity), 30 minutes with a lawyer is worth it.
Talk to a Toronto Condo Broker
I'm Scott — a licensed Broker at Central Home Realty Inc., Brokerage, focused on the Toronto downtown condo market. If you have a question about anything you read here, send me a note. I read every message myself.