Separation under one roof is when a couple genuinely ends their relationship but continues living in the same home. In Western Australia, this arrangement is legally recognised, and the required 12-month separation period for divorce can still apply even if neither party has moved out.
This situation is far more common than many people realise. Rising Perth housing costs, shared mortgages, children’s schooling, and financial pressures make immediate separate living impractical. Many separated couples continue sharing the same address temporarily while beginning entirely separate lives.
However, separated but living under one roof involves more than simply saying the relationship is over. In WA, couples must be able to prove that they were living “separately and apart” despite remaining under the same roof, and the evidence requirements are stricter than many people expect.
So, are you navigating separation or preparing for divorce while still living together? Understanding the legal rules early can help you avoid costly mistakes later.
In this guide, you will learn how separation under one roof works in WA, what evidence the Court looks for, how affidavits are used, what rules apply to de facto couples, and the practical steps you can take to protect your rights from day one.
What Is Separation Under One Roof? The Legal Meaning in WA
Separation under the one roof means that a couple’s relationship has broken down irretrievably, but both parties continue to live at the same address.
Under WA family court legislation (the Family Law Act 1975 (Cth) and the Family Court Act 1997), the law recognises that a couple can be legally “separated” even while sharing a home, provided they are living “separately and apart.” This means the romantic relationship has ended and the parties are living independent lives, even living under the same roof.
Examples of separated but living together in Australia:
- A married couple decides to separate, but they’re not able to afford two rentals in the current market. They continue living in the family home but sleep in separate rooms, manage separate finances, and have told their families the marriage is over.
- A de facto couple separates after 6 years together. One partner has nowhere to move immediately. They live under the same roof for 4 months, splitting bills independently and living entirely separate social lives, before one eventually moves out.
- Two parents of young children agree to separate but they choose to remain in the same house temporarily in order to avoid disrupting their children’s schooling. They communicate only about parenting matters and maintain separate bank accounts and daily routines.
In each case, the law can recognise the separation, but evidence is everything.
Why Many Couples Live Together After Separation
Choosing to separate does not always mean one person packs up and leaves the next day. In reality, life is rarely that straightforward and Perth’s current circumstances make it even harder.
The most common reasons couples live under one roof after separating include:
- Perth’s tight rental market: With vacancy rates low historically and rents at record highs, many separating couples simply cannot afford to immediately set up two separate households.
- The children: Parents often choose to remain together temporarily to protect their children’s sense of stability, keeping them in the same school, the same bedroom, and the same daily routine during an already difficult period.
- The family home has not yet sold: When both parties have equity tied up in a property, leaving before settlement is reached can be practically impossible.
- Mortgage obligations: Continuing to meet a joint mortgage while also paying separate rent is beyond the financial reach of most families.
- Emotional readiness: Sometimes one or both of the parties needs time before making a separation official.
None of these reasons invalidate a separation. The WA law understands that separation is a process; not a single moment of departure. What matters is that the relationship has ended and that your actions reflect that.
Does 12-Month Separation Rule Still Apply When You’re Living Under Same Roof?
Yes. The 12-month separation period required before applying for divorce still counts, even if you kept living under the same roof for all or part of that time.
But you cannot simply declare a date of separation and expect the court will accept it without any question. You must be able to prove that you were genuinely living “separately and apart” during that period.
The legal test is not about location; it is about the nature of the relationship.
A couple sleeping in separate rooms while sharing a home can be legally separated. A couple living at separate addresses who maintain a sexual relationship and joint finances may not be.
How to Prove Separation Under One Roof? The Evidence the Court Requires
The Family Court of Western Australia requires additional evidence to confirm that a relationship has genuinely ended when both parties continue to live at the same address. This is not a rubber stamp; the court looks carefully at the full picture.
Evidence is assessed across several categories simultaneously. No single factor is decisive on its own.
| Category | What the Court Looks For |
| Living arrangements | Sleeping in separate bedrooms; no shared bed |
| Financial separation | Separate bank accounts; independent bill payments; no joint spending |
| Household duties | Shopping, cooking, and cleaning separately |
| Social life | Attending events separately; informing family and friends of the separation |
| Communication | Whether interaction is limited to practical or co-parenting matters |
| Intimate relations | Cessation of sexual relations (considered but not required) |
| Community awareness | Whether neighbours, employers, or others are aware of the separation |
One point worth emphasising is that simply sleeping in different bedrooms is not, on its own, enough. Courts have previously found that parties were not genuinely separated even after one left the family home, because they continued attending social functions together, sharing finances, and maintaining an intimate relationship. The evidence must paint a consistent picture across all areas of life.
What Documents Do You Need to File Separation While Living Together?
If separation under one roof applies to your situation, you must support your divorce application with affidavits – formal sworn written statements presented to the court.
In Western Australia, the requirement is stricter than in other states. WA requires three affidavits, whereas most other Australian states require only two.
Here is how the WA affidavit requirements break down:
Affidavit 1 – Your own affidavit (or one each for a joint application)
Your affidavit must address:
- The specific date you separated and the facts supporting it
- Why you continued living in the same home after separating
- How your living arrangements changed; sleeping, finances, household duties, social life
- What arrangements were made for any children under 18
- Whether you notified Centrelink, Services Australia, or other agencies
Affidavits 2 and 3 – Independent third-party affidavits
These must come from people who personally observed your separation; a family member, friend, or neighbour. Critically, their evidence must be based on direct observation, not simply what you told them. They must corroborate your account in a material way.
Each affidavit must be sworn or affirmed before an authorised witness, such as a solicitor or Justice of the Peace.
Do You Need to Attend Court for Separation Under One Roof in WA?
If you are making a sole application and there is a child of the marriage under 18, you must attend the court hearing. In most other cases, provided your affidavits are correctly filed, attendance is not required, unless the court requests further information and directs you to appear.
A note on reconciliation: If you separated but then attempted to reconcile for a period of less than 3 months, that period generally does not reset your 12-month separation clock. However, if the reconciliation lasted longer than three months, you may need to begin the 12-month period again. Given how much turns on this, legal advice is strongly recommended.
Does Separation Under One Roof Apply to De Facto Couples in WA?
Yes, and this is a question many de facto couples in Perth do not think to ask until it is too late.
Separation under one roof is equally recognised for de facto relationships in Western Australia. However, WA’s legal framework for de facto couples is governed by the Family Court Act 1997 (WA); a separate piece of legislation from the Family Law Act 1975 that applies to de facto couples in every other Australian state.
This distinction matters in practice. De facto couples in WA must apply for property settlement within 2 years of the date of separation. That deadline is firm, and missing it requires you to seek special permission from the court, which is not always granted.
If the date of separation is in dispute, which is common in separation under one roof situations, the court will determine it as a question of fact. Every record, message, and piece of evidence you have kept becomes relevant.
The takeaway for de facto couples: Establish your separation date clearly and early. Do not assume it is obvious. If there is any ambiguity, seek legal advice promptly.
What Happens to the Family Home When You Separate Under One Roof?
There is no legal requirement for either party to leave the family home upon separating. Both parties have the right to remain and deciding who stays or who goes is not a decision to make lightly.
The choice to leave the family home can have real consequences for your property settlement. Courts can and do consider who remained in the property, under what circumstances, and why. Leaving voluntarily, particularly if it is later characterised as abandonment, can affect how a court views the contributions each party made.
If there are family violence concerns, different rules apply. A Restraining Order can provide legal protection. It may affect who can occupy the home. In these situations, seeking urgent legal advice is essential.
The practical rule is this: Do not vacate the family home without first speaking to a family lawyer. A conversation before you move can protect your interests in the property settlement that follows.
Parenting Arrangements When You’re Still Living Together After Separation
When children are involved, separation under one roof adds another layer of complexity — and responsibility.
Australian courts always place the best interests of the child first. Even when parents are living separately within the same house, the court expects that arrangements for children are clearly thought through, documented, and stable.
Parenting plans, Consent Orders, and Parenting Orders can all be put in place while both parents are still sharing a home. You do not need to be living apart before formalising how parenting responsibilities will be divided.
In practice, many separated couples in the same home establish a “shift” arrangement; defined times when each parent is responsible for the children, and document this from the outset. Courts look favourably on parents who demonstrate cooperation and planning, even when the personal relationship has broken down.
Your affidavit must also address the living arrangements made for any children under 18 during the period of separation under one roof. This is a required element; not optional.
If you are unsure how to approach parenting arrangements, speaking with an expert family lawyer early gives you clarity on financial parenting orders and protects your children’s stability.
Centrelink and Separation Under One Roof — What You Must Do
This matters both legally and financially. If you or your partner receive any government benefit; including Family Tax Benefit, Single Parent Payment, or Child Support payments through Services Australia, you are legally required to notify Centrelink of your separation, even if you are still living at the same address.
Centrelink applies its own test to assess whether a couple is genuinely separated. The factors it considers are very similar to those the court uses: separate finances, separate living arrangements, and community awareness of the separation.
Failing to notify Centrelink in a timely way can result in debts or penalties.
On the positive side, separation may make you eligible for new entitlements; including the Single Parent Payment, which you would not have qualified for while in a relationship.
Importantly, correspondence from Centrelink acknowledging your separation can also serve as evidence of your separation date in your divorce affidavit. Keep copies of everything.
Practical Steps to Take If You Are Separating Under One Roof in Perth
If you are in this situation right now, taking these steps protects both your legal position and your peace of mind.
- Document the date of separation. A text message, email, or written note which states the relationship has ended creates a clear record. Do not rely on memory.
- Move into a separate bedroom. This is one of the clearest behavioural signals that the relationship has ended.
- Open a separate bank account. Redirect your income immediately and stop shared spending.
- Notify Centrelink or Services Australia if you receive any government benefit. Do this promptly — and keep the correspondence.
- Tell trusted family members or friends. People who witness your separated living arrangements can provide the third-party affidavits the court requires.
- Keep evidence and records. Your bank statements, receipts, written communications, and even text messages, everything counts as evidence.
- Document parenting arrangements clearly, even informally, from day one.
- Speak with a Perth separation lawyer before making any major decisions — especially before vacating the family home.
Navigating This Is Hard – You Do Not Have to Do It Alone
Separation under one roof is legally recognised in Western Australia, but it requires careful documentation, the right evidence, and an understanding of WA’s specific rules that differ from the rest of Australia.
This is not a process you should navigate on assumptions alone. The decisions you make in the early weeks of a separation; about the home, your finances, your children, and what you record, can shape your legal position for everything that follows.
At Hoe Lawyers, we understand that this is one of the most stressful chapters a person can face. Our experienced Perth family lawyers provide honest and affordable legal advice to help you understand your rights. So, let’s take the right step from the beginning.
Talk to Hoe Lawyers – Experienced Separation Lawyers in Perth
At Hoe Lawyers, our trusted family law team has guided hundreds of clients through divorce & separation, property settlement, and parenting arrangements, with professionalism, transparency, and genuine care.
Whether you are just beginning to navigate separation under one roof or need advice on your next step, we are here to help.
FAQs About Separation Under One Roof
- Can I be legally separated while still living under the same roof in WA?
Yes, you can be legally separated and still live under one roof in WA. Western Australian law recognises this agreement as “separation under one roof.” This means the romantic relationship has ended and you are living independent lives, even if you share the same address.
- Does the 12-month separation period count if we are living under the same roof?
Yes. The separation period of 12 months that should pass before applying for divorce may encompass the period during which you lived under one roof, but you must show proof that your relationship was indeed over. This proof will require an affidavit filed with the court.
- How many affidavits are required for separation under one roof in WA?
Three affidavits are needed in WA for separation under one roof, one of which will be yours (two if both spouses file jointly) while the other two will come from independent witnesses, such as a relative, a friend, or a neighbour.
- Does separation under one roof apply to de facto couples in WA?
Yes. WA’s Family Court Act 1997 recognises separation under one roof for de facto couples. The date of separation is particularly critical for de facto couples because property settlement applications must be made within two years of that date.
- Do I have to move out of the family home after separating?
No. It is not legally necessary for anyone to move out. However, moving out may impact your division of property. Therefore, it is recommended that you consult with a lawyer prior to moving out.
- What evidence does the court need to prove separation under one roof?
The court will look at sleeping arrangements, financial independence, household duties, socialisation, communication between the parties, and whether family members, friends, and concerned authorities were informed. Third party affidavits attesting to the separation will also be needed.
- What happens if we tried to reconcile during the 12-month separation period?
A reconciliation attempt of less than 3 months generally does not reset the 12-month separation period. If the reconciliation lasted longer than three months, you may need to begin the period again. Legal advice is recommended if this applies to your situation.