In short

Joint tenancy and tenancy in common determine what happens to co-owned property when an owner dies. Joint tenancy passes the whole property automatically to the surviving owner, overriding the will entirely. Tenancy in common gives each owner a defined share that passes through their own estate, so their will actually controls where it goes. For blended families, this distinction can determine whether an estate plan works as intended.

When two or more people co-own Australian real estate, the form of co-ownership determines what happens when one owner dies. That sounds like a narrow legal question, but for many retirees — particularly those in second relationships with children from prior marriages, or those who own investment property with business partners or siblings — it is one of the most practically important estate planning decisions they face. The two forms are joint tenancy and tenancy in common, and the difference is fundamental.

Joint tenancy and the right of survivorship

Joint tenants each hold an equal undivided interest in the whole property — not a separate defined share, but a co-ownership of everything. The defining feature is the right of survivorship: when one joint tenant dies, the surviving joint tenant or tenants automatically become the sole owners. The property does not pass through the deceased's estate. It does not go through probate. The will is irrelevant to the property's fate. The surviving owner simply becomes the full owner by operation of law.

For a traditional couple with shared children and a shared intent to leave the home to the survivor, joint tenancy works exactly as intended. The home passes automatically, without the delays or costs of probate, and the surviving spouse continues to live in the property undisturbed.

Tenancy in common and the estate

Tenancy in common works differently. Each owner holds a defined share — which can be equal or unequal, depending on agreement. There is no right of survivorship. When a tenant in common dies, their share passes through their estate, subject to their will (or to intestacy rules if there is no valid will). Probate is generally required for the deceased's share before it can be dealt with by the estate.

This gives each owner independent control over where their share goes. A 50% share in a property can be left to any chosen beneficiary — children from a prior relationship, siblings, charities, whoever the owner chooses to benefit. The surviving co-owner does not automatically receive anything.

Why this matters most for blended families

The contrast becomes stark in a blended family context. Consider a 70-year-old man in a second marriage, whose home is worth $1.5 million and is co-owned with his current wife. His will provides that half his estate should go to his adult children from his first marriage.

If the property is held as joint tenants, and he dies first, the entire home passes automatically to his wife by survivorship. His will's provisions are overridden for that property. His children receive nothing from the home, and when his wife eventually dies, she may leave it wherever she chooses — potentially to her own family entirely. His intent is defeated.

If the property is held as tenants in common in equal shares, his 50% passes through his estate on his death. His will operates. His children may receive a share of the home through his estate, while his wife retains her own 50%. The trade-off is that his wife now co-owns the home with her stepchildren, which may create practical complications — but the estate intent is preserved.

For anyone in a blended family, or for any co-owner whose estate intent diverges from "leave everything to the co-owner," the form of title is not a detail. It determines whether the will works at all for that property.

Family provision claims

Property passing by survivorship under a joint tenancy generally passes outside the estate and is therefore not directly subject to family provision claims under state and territory succession legislation — claimants challenging an estate can ordinarily only reach assets that pass through the estate itself.

New South Wales is a significant exception. The NSW Succession Act 2006 allows a court to designate assets that passed outside the estate — including, in certain circumstances, property that passed by joint tenancy survivorship — as "notional estate" for family provision purposes. This means a court can potentially make provision for an eligible applicant from joint tenancy property if the estate itself is insufficient. Other states and territories have more limited versions of this doctrine or none at all. For NSW residents whose estate planning involves joint tenancy property and blended family dynamics, specialist legal advice on the notional estate rules is important.

For tenancy in common, the deceased's share passes through the estate and is fully exposed to family provision claims from eligible claimants — current spouse, former spouse, children, and in some states stepchildren and others in close relationships.

Severance and changing the form

The form of co-ownership shown on the title document is not permanent. A joint tenancy can be converted to tenancy in common by severance — and in most Australian jurisdictions, severance can be achieved unilaterally by one joint tenant, by registering a notice of severance with the relevant land titles office. No agreement from the other joint tenant is needed for severance; only one owner needs to act. The result is that each owner holds a defined share (typically equal) as tenants in common, with no survivorship.

Converting in the other direction — from tenancy in common to joint tenancy — requires all owners' agreement.

For couples reconsidering their property structure after major life events (entering a second relationship, having children together, or dealing with a prior relationship's children coming of age), checking the title and considering whether to sever or change the form is worthwhile. The current form is on the title document and is readily inspected. Legal fees for a straightforward severance are modest relative to the stakes.

Centrelink

For couples, Centrelink assesses each spouse's assets as part of the couple's combined assessment regardless of the legal ownership form — whether property is held jointly or as tenants in common does not change how it is counted for the Age Pension means test. For non-couple co-owners (siblings, friends), each individual's proportionate share of the property counts in their own Centrelink assessment.

One Centrelink implication specific to joint tenancy: when a joint tenant dies, the surviving owner's assets increase immediately (they gain the deceased's share by survivorship). This can affect the survivor's Age Pension entitlement from the date of that increase, and Centrelink must be notified of the change in assets.

Sources

Key takeaways

  • Joint tenancy has a right of survivorship: when one owner dies, the property passes automatically and entirely to the surviving owner(s), bypassing the will and probate.
  • Tenancy in common gives each owner a defined, independent share that passes through their own estate on death, subject to their will — with no automatic survivorship.
  • For blended families, joint tenancy can defeat a will's intent — the whole property can pass to a current spouse, leaving children from an earlier relationship with nothing from that asset.
  • Property passing by joint tenancy survivorship generally falls outside family provision claims, except in NSW, where the notional estate rules can bring it back into scope in certain circumstances.
  • A joint tenancy can be unilaterally severed into a tenancy in common by one owner registering a notice with the land titles office — no agreement from the other owner is required.

Frequently asked questions

What happens to jointly owned property when one owner dies?

If the property is held as joint tenants, it passes automatically and entirely to the surviving owner by right of survivorship — it bypasses the will and probate completely. If held as tenants in common, only the deceased's defined share passes, and it goes through their estate according to their will.

Can my will control what happens to my share of jointly owned property?

Only if the property is held as tenants in common. Under joint tenancy, the right of survivorship overrides the will entirely for that asset — the co-owner automatically becomes full owner regardless of what the will says.

Why does this matter especially for blended families?

If a home is held as joint tenants and one spouse dies first, the entire property passes to the surviving spouse, and any provision in the deceased's will for children from an earlier relationship is overridden for that asset. Tenancy in common lets each spouse's share pass through their own estate, so a will actually controls that share.

Can I change how my property is held from joint tenancy to tenancy in common?

Yes. A joint tenancy can be severed into a tenancy in common, and in most Australian jurisdictions this can be done unilaterally — one owner can register a notice of severance with the land titles office without needing the other owner's agreement. Converting the other way, from tenancy in common to joint tenancy, requires all owners to agree.

A note on advice. This article is general information only and doesn't account for your personal circumstances. Everyone's situation is different — before acting, it's worth talking it through with a licensed adviser who knows your full picture.