Two people can own exactly the same house, in exactly the same proportions, and still have completely different outcomes when one of them dies. The difference comes down to a single line on the property title: whether you own as joint tenants or tenants in common.
It sounds like a technicality, but it's one of the most consequential decisions in Australian estate planning — and one that many people make without realising it, often years before they ever think about writing a will. Here's what the difference actually means, and how to check which one applies to you.
The Core Difference
Both forms of ownership let two or more people hold title to the same property. What changes is what happens to each person's share.
Joint tenancy comes with a right of survivorship. If one joint tenant dies, their interest in the property doesn't form part of their estate at all — it passes automatically and immediately to the surviving joint tenant, regardless of what the deceased person's will says. Legally, the property was never "theirs" to leave to anyone; the surviving owner simply continues owning the whole thing.
Tenants in common means each owner holds a distinct, defined share of the property — commonly equal shares, but not always. A tenant in common's share is treated like any other asset: it forms part of their estate when they die and passes according to their will (or the intestacy rules if they don't have one).
This one distinction explains why the same piece of paperwork can produce two completely different results for a grieving family.
Why Most Couples Default to Joint Tenancy
When couples buy a home together, joint tenancy is usually the default — and often the right choice. It's simple, it avoids probate on that asset, and it guarantees the surviving partner keeps the family home without having to negotiate with anyone else's beneficiaries.
The trade-off is flexibility. Because your share passes automatically to your co-owner, you cannot leave your interest in a jointly-tenanted property to anyone else in your will — not to children from a previous relationship, not to a sibling, not to a trust. No matter what your will says, survivorship overrides it.
For a straightforward marriage with no children from previous relationships, that's usually exactly what both partners want. For anyone else, it's worth pausing.
When Tenants in Common Makes More Sense
Tenants in common ownership tends to suit situations where the owners want their share to go to different people, or in different proportions. Common examples include:
- Blended families — where one or both partners want their share to eventually pass to their own children, not automatically to their partner (often paired with a life interest so the surviving partner can still live in the home)
- Unequal financial contributions — for example, one sibling contributing 70% of the purchase price of an investment property and another contributing 30%
- Friends, siblings, or business partners buying together — where there's no reason one owner's share should default to another
- Second marriages and de facto relationships — where each partner typically wants control over where their own share goes
If you fall into any of these categories and you're not sure how your current property is held, it's worth checking — because the title might already say something you didn't intend.
How to Check What You Currently Have
You don't have to guess. A current title search through your state or territory's land titles office (obtained through a solicitor, conveyancer, or in some states directly online) will state explicitly whether owners hold as joint tenants or tenants in common, and — if tenants in common — in what shares. It's a small cost that removes any doubt before you rely on your will to do something the title won't allow.
Can You Change It Later?
Yes. Converting joint tenancy into tenants in common is called severing the joint tenancy, and any joint tenant can do it — sometimes without the other owner's agreement, depending on the state. It typically involves lodging a form with the land titles office and registering the change, converting the ownership (usually into equal shares as tenants in common, unless otherwise agreed).
Severance is commonly considered after separation or divorce, when a relationship changes significantly, or simply when someone updates their estate plan and realises their current property title doesn't match what their will is trying to achieve. It's generally inexpensive, but the process and any stamp duty implications vary between states, so it's worth confirming with a conveyancer or solicitor before you act.
Going the other way — from tenants in common to joint tenancy — is also possible, and is sometimes done by couples who started as tenants in common (for example, due to unequal deposits) and later want the survivorship protection once the relationship is well established.
A Trap Worth Knowing About
A surprising number of people write a detailed will leaving "my share of the family home" to their children, without realising the property is held as joint tenants with their current spouse. When they die, that clause in the will simply doesn't operate — the surviving spouse inherits the whole property by survivorship, and the children get nothing from that asset, regardless of the will's wording.
This is one of the most common gaps we see between what people intend and what their paperwork actually delivers. It's also entirely avoidable with a quick title check as part of a proper estate plan.
Getting This Right, Alongside the Rest of Your Estate Plan
Joint tenancy versus tenants in common isn't a decision you make once and forget — it's worth revisiting whenever your relationships, family structure, or financial contributions change. And because it can silently override what your will says, it needs to be checked alongside your will, not treated as a separate, unrelated piece of paperwork.
This is exactly the kind of detail that gets missed when estate planning documents are scattered across drawers, emails, and old solicitor files. Storing your title information, will, and property details together in Custodium Vault means your executor — and you, when it's time to review your plan — can see the full picture in one place, instead of discovering a mismatch after it's too late to fix. Combined with life insurance to cover immediate costs for your family, it's a more complete way to make sure your intentions and your paperwork actually agree. See our plans.
The Bottom Line
Joint tenancy and tenants in common look identical on the surface — two names on one title — but they produce very different outcomes when someone dies. Knowing which one applies to your property, and whether it still matches your wishes, is a five-minute check that can prevent a very expensive surprise for the people you leave behind.
This article is general information only and does not constitute legal advice. For advice specific to your situation, speak with a qualified Australian estate planning lawyer. Our estate planning team can help you check how your property is held and make sure it lines up with the rest of your estate plan.