Buying a Presale With a Partner: BC Co-Investor Rules (2026)
By Uzair Muhammad · Published · Updated
Co-buying a BC presale halves your cash but not your risk: each borrower owes 100% of the mortgage. Worked $600K example, title options and tax rules for 2026.
Yes, two or more investors can buy one BC presale together, but every co-buyer is on the hook for 100% of the mortgage, the transfer tax is calculated on the whole price (not each person's share), and if one partner can't qualify at completion the whole deal can fail. Get the exit rules in writing before you sign, not after.
Pooling money with a friend, sibling or business partner is one of the most common ways Fraser Valley investors get into a presale. It halves the cash you need up front. It also doubles the number of things that can go wrong. Here is how it works in BC in 2026, with real numbers.
How Co-Buying a Presale Works
Everyone who will be on title signs the purchase agreement and the disclosure statement acknowledgement together. The deposit, the 5% GST and the property transfer tax are paid by the group, and the lender approves all borrowers as a unit at completion, not at signing.
The rule most partners miss: a "50/50" split of ownership is not a 50/50 split of liability. With a joint mortgage each borrower is liable for the entire debt. If your partner stops paying, the lender can come after you for every dollar.
Worked Example: Two Investors, One $600,000 Surrey 1-Bedroom
Assume two friends buy a $600,000 presale in Surrey City Centre, 50/50, with a 20% staged deposit and no first-time-buyer or newly built home exemptions (investors do not qualify for these).
| Cost to keys | Total | Each (50/50) |
|---|---|---|
| Deposit (20%) | $120,000 | $60,000 |
| GST (5%) at completion | $30,000 | $15,000 |
| Property transfer tax (1% to $200K + 2% on $400K) | $10,000 | $5,000 |
| Legal and adjustments (estimate) | $2,000 | $1,000 |
| Total cash | $162,000 | $81,000 |
The remaining $480,000 is the mortgage. At roughly 4.60% on a 25-year amortization that is about $2,684 a month, and the stress-test payment (qualifying rate of the higher of 5.25% or your contract rate plus 2%) is about $3,244 a month. Those are illustrations, not quotes, so run your own numbers with a mortgage broker.
BC transfer tax is charged at 1% on the first $200,000, 2% from $200,000 to $2,000,000, 3% above $2,000,000, plus an extra 2% on residential value above $3,000,000 (gov.bc.ca). It is applied to the property's fair market value, so adding a co-buyer never lowers the bill.
The Four Co-Investor Traps
1. Joint and several liability
Each borrower owes the full $480,000. One missed payment hits both credit files.
2. Debt ratios for both of you
Lenders typically add the new payment to each borrower's existing debts. A partner with a car loan and another property can sink the approval for the group.
3. A partner who walks before completion
If one buyer cannot close, the other must qualify alone for the full $480,000, find a replacement buyer, or risk default and loss of the deposit.
4. Assignment needs everyone
Selling before completion requires all contract holders to sign, and the developer consents to the assignment. One holdout blocks the sale.
Joint Tenants vs Tenants in Common
| Feature | Joint tenancy | Tenants in common |
|---|---|---|
| Shares | Equal, always | Any split (60/40, 70/30) |
| If an owner dies | Share passes automatically to surviving owner | Share passes through the estate |
| Best for | Spouses | Friends, siblings, business partners |
Watch out: for unrelated investors, joint tenancy can hand your half to your partner's co-owner instead of your family. Tenants in common with a written co-ownership agreement is the usual setup.
How the Tax Works
The CRA says owning a rental property together as an investment does not by itself create a partnership. Co-owners each report their share of rental income and expenses on their own Form T776 and list the other co-owners in Part 2. When you sell, each owner reports their share of the gain, and 50% of a capital gain is included in income. On a $60,000 gain split 60/40, that is $36,000 and $24,000 of gain, or $18,000 and $12,000 taxable, each taxed at that person's own marginal rate. Selling inside 365 days can turn the gain into fully taxable business income, and assignments can trigger BC's flipping tax, so confirm the rules for your exact timeline.
Do this before signing:
1. Write a co-ownership agreement: who pays what, who covers a shortfall, and how a partner can be bought out.
2. Pre-qualify both borrowers together with a broker, with every debt disclosed.
3. Match your title percentages to the money each person actually contributes.
4. Agree an exit date and who has first right to buy the other out.
5. Have a BC real estate lawyer draft the agreement. Buying through a corporation is another option, covered in our corporation guide.
Plan the Numbers First
Check how many presales an investor can carry, run the cash-flow math at completion, and browse current Surrey presale condos. A projected return is never a guaranteed one, so stress-test the deal with higher rates and a lower rent.
The Bottom Line
Co-buying cuts your cash in half but not your risk. Every partner carries 100% of the mortgage, transfer tax is on the full price, and one weak approval can sink the group. Qualify together, put the exit in writing, and pick a partner you would still trust in a falling market. We represent buyers only and never promote a developer. Book a free 15-min call and we will stress-test your partnership before you put down a dollar.
Sources: gov.bc.ca Property Transfer Tax · CRA: Rental income ownership. General information, not legal or tax advice.