Buying Property with Family or Friends: Joint Tenancy vs Tenancy in Common, Agreements & Exits

In the GTA, down payment and monthly carrying costs price many people out. Co-buying — pooling funds with siblings, parents, or close friends — has become a practical path: combine the down payment, share the payments, share the appreciation. But getting along isn’t the same as being clear, and relationships sour fast when ownership and exit terms aren’t written down.

Step 1 — Choose the Right Way to Hold Title

Joint Tenancy: shares are treated as equal, with a right of survivorship — when one owner dies, their share passes automatically to the others and stays out of the estate. Common between spouses.

Tenancy in Common: owners can hold unequal shares (say 60/40), and each share can pass to chosen heirs by will. Usually the better fit when contributions differ or co-owners aren’t spouses.

Step 2 — Sign a Co-ownership Agreement

This is the most important step in co-buying and the one most often skipped. A good agreement should cover at least:

• Each party’s contribution and ownership share
• How the mortgage, property tax, repairs, and insurance are split
• The process and pricing when someone wants to exit or sell (right of first refusal, valuation method)
• What happens if someone defaults on their share of payments
• Whether the home is owner-occupied or rented, and who lives there
• A dispute-resolution mechanism (mediation/arbitration)

A co-applied mortgage is typically joint and several liability: if one co-owner doesn’t pay their share, the lender can pursue any one of the others for the full balance. That also means a partner’s debts or credit problems can reach you. Understand each co-buyer’s finances before borrowing together.

Who treats the home as their principal residence — and who doesn’t — affects how the principal residence exemption is allocated on a future sale, and any rented portion means reporting rental income. Sort out shares, use, and tax treatment with an accountant and lawyer before buying, not at sale.

Q: Joint tenancy or tenancy in common for co-buyers?

Joint tenancy means equal shares with a right of survivorship (a deceased owner’s share passes automatically to the others) — common between spouses. Tenancy in common allows unequal shares that pass by will — usually better when contributions differ or co-owners aren’t spouses.

Q: Do we really need a co-ownership agreement?

Strongly recommended. It sets out contributions, cost-sharing, exit and pricing, default handling, and dispute resolution — the key to preventing fallout among family or friends. Verbal understandings are nearly impossible to enforce when problems arise.

Q: What if one co-owner stops paying the mortgage?

A co-applied mortgage is typically joint and several liability, so if one person doesn’t pay their share, the lender can pursue any other co-owner for the full balance. Understand each co-buyer’s finances and credit before borrowing together.

Q: Does co-ownership affect the principal residence exemption?

Yes. Who treats the home as their principal residence affects how the exemption is allocated on a future sale, and any rented portion means reporting rental income. Settle shares, use, and tax treatment with an accountant and lawyer before buying.