Separated Under One Roof Divorce Australia

You don't need to move out to start the 12-month separation clock for divorce. Australian law explicitly recognises "separation under one roof" — living in the same house while no longer functioning as a couple. This is common in the Northern Territory, where Darwin's housing costs and remote community logistics make an immediate physical split impractical.

But because shared housing creates a presumption that the marriage continues, you'll need to prove the separation was real.

The 12-Month Separation Rule

Before filing for divorce in Australia, you must demonstrate that you and your spouse have been separated for a continuous period of at least 12 months and 1 day. This applies universally under the Family Law Act 1975 — no exceptions for short marriages (the counselling certificate requirement was abolished on June 10, 2025).

Separation means the end of the consortium vitae — the matrimonial relationship. It can be initiated unilaterally by one party, as long as that intention is communicated to the other.

What the Court Looks for When You Stayed in the Same House

The court assesses four categories of evidence to determine whether a genuine separation existed:

Sleeping arrangements: Moving to separate bedrooms. Ceasing any physical or sexual relationship.

Financial independence: Closing joint bank accounts. Opening individual accounts. Paying bills separately from your own income.

Domestic services: No longer cooking, cleaning, or doing laundry for each other. Shopping and preparing meals independently.

Social separation: Attending events separately as single individuals. Explicitly telling family, friends, and neighbours that the relationship has ended.

You don't need to tick every single box perfectly. The court looks at the overall picture — did the structure of your daily lives reflect two separate people sharing a house rather than a married couple?

Affidavit Requirements

Sole application: You file your own detailed affidavit describing the separation, plus a supporting affidavit from an independent third party — a relative, neighbour, colleague, or family friend who observed the separate lives.

Joint application: Both spouses file individual affidavits, OR one spouse files an affidavit supported by a third-party witness.

The affidavits must be signed and sworn before an authorised witness (Justice of the Peace or lawyer) and uploaded to the Commonwealth Courts Portal.

The Centrelink Connection

If you've separated under one roof and are claiming Centrelink single-person payments (JobSeeker, Parenting Payment Single, Age Pension at single rate), you'll need to notify Services Australia using Form SS293 — Relationship Details. Centrelink applies its own assessment of your living arrangements, separate from the court's.

Your separation affidavit for the divorce and your Centrelink declaration cover similar ground — proof of separate finances, separate domestic routines, and separate social lives. Preparing them together ensures consistency. A contradiction between what you tell the court and what you tell Centrelink can trigger audits in both directions.

The Reconciliation Bounce Rule

If you attempt a reconciliation after separating, the law allows one pause:

• Under 3 months together: The separation clock is not reset. The reconciliation period is simply excluded, and your pre- and post-reconciliation time is added together.
• Over 3 months together: The full 12-month separation period starts again from scratch.

This means a brief attempt to repair the relationship doesn't force you back to day one — but a sustained reunion does.

Separation Date: How to Establish It

Your separation date matters because the 12-month clock runs from it. Establish it clearly by:

• Sending your spouse a written message (text, email) stating the relationship is over
• Telling a family member or friend on a specific date
• Changing your relationship status with Centrelink
• Opening a separate bank account on a specific date

If there's ever a dispute about when separation actually began, this contemporaneous evidence settles it.

The Northern Territory Divorce Filing Process Guide includes a separation-under-one-roof affidavit framework with the specific evidence categories the court expects — so your proof is structured correctly from the start.

See more Northern Territory guides →