Plenty of couples separate but keep living in the same home, often for money or for the children. The law allows for this, and you can still be treated as separated. The catch is that you have to be able to show it, and the proof is more involved than just moving into the spare room. Here is how it works.
Can you really be separated while living together?
Yes. The Family Law Act expressly recognises that a couple can be separated even though they are still living under the same roof. You do not have to move out, and you do not need your partner to agree, to be legally separated. What matters is that the relationship has ended, not the address you each wake up at.
Section 49(2) of the Act says parties may be treated as having separated and lived separately and apart even though they continued to live in the same residence, or one of them kept doing some household tasks for the other. Separation starts the same way it always does: one of you decides the relationship is over, acts on that decision, and tells the other person. Where you each sleep that night does not change when the separation began.
What "separated under one roof" actually means
This is where people get caught out. Separation under one roof is not simply sleeping in different bedrooms or running your days independently. The court looks at whether the relationship itself genuinely ended, and at how that change showed up in the way you actually lived, rather than at the sleeping arrangements alone.
The Federal Circuit and Family Court of Australia looks for evidence that one of you made clear the relationship was over, and that from that point you behaved as a separated person rather than a couple, both inside the home and outside it. Someone who says they have separated but still presents to the world as a married couple, still does everything together, still shares a bed, will struggle to satisfy the court that a real separation happened. The change has to be genuine, and it has to be visible in how you actually live.
What the court looks at
There is no single test, and no checklist where you tick off enough boxes to qualify. The court looks at the whole picture of the relationship before and after the date you say you separated. The appeal courts have specifically rejected a mechanical count of who did which chores.
In practice, the things that tend to matter include separate sleeping arrangements, splitting or separating your finances, no longer doing domestic tasks for each other, going to social events and family occasions separately, and telling people the relationship is over. That last one carries real weight: whether you informed family, friends, and government bodies such as Centrelink that you had separated. The point is not any single item on that list. It is whether, taken together, the way you lived genuinely changed from being a couple to being two people who happen to share an address.
The extra proof you need for divorce
This is the practical part most people do not see coming. If you and your spouse lived at the same address for any part of the 12 months immediately before you apply for divorce, you cannot just state that you were separated. You have to back it with affidavit evidence.
In that situation the court requires two affidavits supporting the application. An affidavit is a written statement of evidence, sworn or affirmed before an authorised witness such as a lawyer or Justice of the Peace. Each affidavit should set out the circumstances of the separation: when it happened, how things changed, and why you continued to live together. In the application itself you also record the date you separated and any periods you lived together in the same home after that date, so the timeline is clear. Whoever writes an affidavit has to be prepared to come to court and be questioned about it if the court asks.
Who can write the second affidavit
The first affidavit is your own. The second should come from an independent person who knows your situation, such as a friend, neighbour, or family member, confirming what they observed about the separation. The court prefers this corroboration to come from someone outside the relationship.
If there is genuinely no independent person who can speak to it, you can provide more detail in your own affidavit instead, but independent evidence is the stronger position. If you and your spouse are applying for the divorce together, you each file your own separate affidavit. The aim in every case is the same: to give the court enough to be satisfied the separation was real, not just asserted.
Living together when you apply, or after
The court cannot grant a divorce if it thinks there is a reasonable chance you will get back together. That matters when you are still under the same roof at the time you apply, because the living arrangement naturally raises the question.
For that reason, if you are still at the same address when you apply, you will need to explain your future living plans in the affidavit. If you are both still living together at the date of the hearing, or intend to keep doing so, the court may not be satisfied the marriage has ended, and may not grant the divorce. None of this prevents a divorce. It just means the longer you remain under one roof, the more carefully you have to show the relationship is genuinely over.
Does this affect property, parenting, or Centrelink?
The idea of separation under one roof is not only about divorce. The same question, were you really separated and from when, comes up for property settlement time limits, for child support, and for Centrelink payments that depend on being single.
Different bodies may look at it slightly differently, and Services Australia in particular will want to see things like separate finances and sleeping arrangements before treating you as separated for payment purposes. The practical lesson is the same across all of them: the date you separated, and the evidence that the relationship changed from that date, is worth being clear and consistent about, because more than one process may rely on it later. Keeping a few simple records from around the time you separated, such as when you told family or updated Services Australia, can save a great deal of difficulty if the date is ever questioned.
You do not have to wait to sort things out
Living in the same house does not put your separation on hold. You can start working out parenting arrangements and property well before any divorce, and well before anyone moves out. The living situation does not have to be resolved first.
For most people the better path is to settle those things by agreement rather than through a courtroom. That is what Family Dispute Resolution is for, and being under the same roof is no barrier to it, especially when it runs online. The practitioner assigned to your matter helps each of you shape and reality-check the proposals you put to each other, so you reach arrangements you both understand. If you want to see how the timing fits together, our explainer on how long you need to be separated before divorce sits alongside this, and what FDR is walks through the process. A Free Discovery Call is the simplest place to start.
This article is general information only and is not legal advice. For advice about your specific circumstances, please consult a family lawyer or accredited Family Dispute Resolution Practitioner.