Buying a House With a Sibling or Friend: What to Sort Out First

Buying a house with a sibling or friend South Africa buyers are doing more often than ever, pooling incomes to afford more than any one person could alone. Banks have adapted too, with some financing groups of four or five people buying together, whether siblings supporting ageing parents, friends splitting a home, or family members combining resources for a bigger deposit.

Understanding Your Property Co-Ownership Agreement

A proper property co-ownership agreement is the single most important document in this whole arrangement, and it's the one people skip because things feel good right now. As MortgageMe's Andrea Tucker puts it plainly, being related to or fond of your co-buyer shouldn't create a false sense of security. Your agreement should cover:

• Exactly what percentage each person owns, and how that was calculated

• How monthly bond payments, rates, and maintenance costs get split

• What happens if one person wants to sell, move out, or can no longer contribute

• How disputes over property use or major decisions get resolved

Why You're Jointly and Severally Liable for the Bond

This is the part people underestimate most. Being jointly and severally liable bond co-owners means each person is legally responsible for the entire loan amount, not just their agreed share. If your co-owner stops paying, the bank can pursue you for the full outstanding balance, regardless of what your private agreement says about who owes what.

Setting Up Unequal Ownership Shares

You don't have to split ownership 50/50. Unequal ownership shares are entirely normal, one person might own 70 percent and pay 70 percent of the bond, while the other owns and pays 30 percent. If the property is sold later, profits get divided according to that same split, so it's worth getting this percentage clearly documented from the start, not assumed informally.

Protecting Yourself With a Right of First Refusal Co-Owner Clause

A right of first refusal co-owner clause gives the remaining owners first opportunity to buy out a co-owner who wants to sell their share, before that share can be offered to an outside buyer. This protects everyone from suddenly ending up co-owning a home with a stranger neither of you chose.

What Happens If Someone Wants Out

Life changes, and your agreement should plan for it upfront:

1. What happens if one co-owner needs to sell their share, can they force a sale of the whole property, or only their portion?

2. How is a fair buyout price determined if one person wants to leave and the others want to stay?

3. What happens to a co-owner's share if they pass away, and does your will clearly address this?

4. Who has decision-making authority for major issues, like renovations or refinancing?

Treat It Like a Business Transaction

As property professional Michelle Cohen advises, co-ownership works best when you treat it like a formal business transaction from day one, not an informal understanding between people who trust each other. That trust matters, but it doesn't replace a clear, written agreement covering the scenarios above.

If you're combining incomes specifically to boost your buying power the way a joint home loan with a partner would, the same core principle applies, get everything in writing before you sign the bond application, not after.

Want to see what you'd qualify for together? Try our free two-minute pre-approval quiz and get a real number to work with.