Moving In Together in France: Legal and Relationship Questions to Discuss

The legal information in this article concerns France. Rules differ in other countries and depend on your circumstances.

Every year, many couples in France take the step of moving in together. It's a moment of euphoria, of future projections, of poorly taped cardboard boxes, and negotiations about the couch placement.

In the article that follows, I explore communication within the couple. If you recognise yourself in this theme, I designed a couple communication test that helps you take stock of your communication patterns as a couple. It comes with a guide to extend your reflection beyond the results. I also wrote a book on this subject, Saving Your Relationship: Communication, Crises, and Renewal, if you would like to go further.

But beneath the enthusiasm, a reality sets in: most cohabiting couples don't have a clear picture of their rights and obligations. And among those who separate within the first two years of living together, many cite issues that could have been anticipated.

As a CBT Psychotherapist, I regularly work with couples who discover — sometimes too late — that cohabitation is not a "lighter version" of marriage. It's a distinct legal framework with minimal protections and psychological gray areas that nobody discusses before signing the lease.

Here are the 10 essential things to know: 5 legal aspects and 5 psychological aspects. At the end of the article, you'll find a complete checklist to go through before unpacking your suitcases.

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PART 1: The 5 Legal Aspects You Probably Don't Know

1. The Lease: Put Both Names On It, Without Exception

This is one of the most common oversights. Having both names on a lease can clarify rights and responsibilities. A partner who has not signed does not automatically have the same rights; specific protections may apply, including in some cases of death or abandonment of the home. Obtain advice for your tenancy.

What the law says: Cohabitation (Article 515-8 of the French Civil Code) does not by itself make an unmarried partner a co-tenant. Being named on the lease is what establishes that status; without it, the situation depends on your specific circumstances and the protections that may apply. The rule: Sign the lease with both names (as co-tenants). Even if one earns more than the other. Even if one found the apartment alone. Both names on the lease is the only protection in case of separation. Important exception: If you're co-tenants and one of you leaves, they remain liable for rent until the end of the notice period or until an amendment to the lease. This is joint liability.

2. Inheritance: Without a Will, Your Cohabiting Partner Inherits Nothing

This is probably the most misunderstood and most consequential piece of information. In France, neither a cohabiting partner nor a PACS partner automatically inherits in the absence of a will. Their tax treatment and some other rights differ. Under French law, the surviving cohabiting partner is not an heir unless named in a will.

In practice: If your partner dies without a will, their assets go to their children, their parents, their siblings. You may find yourself having to leave the home you've shared for 15 years. Minimum protection: Write a holographic will (handwritten, dated, and signed). However, be aware: a cohabiting partner named as beneficiary is subject to 60% taxation on inheritance rights, compared to 0% for a spouse and, in most cases, for a PACS partner. This tax difference is worth anticipating. Advice: Consult a notary. A 45-minute appointment can prevent years of legal disputes.

3. Separation: No Mutual Financial Obligation

Cohabitation creates no maintenance obligation between partners. Unlike marriage (duty of support) or a civil union (material assistance), cohabitation provides nothing.

What this means: If one person puts their career on hold to manage the household, if one person finances the entire rent for 5 years, if one gives up a job elsewhere to follow the other — legally, no compensation is owed. The exception: Unjust enrichment. If you can prove you've significantly contributed to your partner's enrichment (home improvements, participation in their business) without compensation, legal recourse is possible. But the burden of proof is heavy.

4. Social Benefits: What Changes When You Move In

From the moment you move in, you form a household in the eyes of social benefit administration. Your combined income can now be evaluated together for benefits such as housing benefits (APL), the activity bonus, and family allowances.

Real-world impact: A couple where both work may see their housing benefits decrease significantly. Conversely, a couple with modest income may benefit from a favorable recalculation. The rule: Notify the relevant benefits agency when your living situation changes and check the rules for each benefit. Household circumstances may affect some entitlements. Point of attention: Family allowances are also recalculated. If one of you has children from a previous relationship, the rates change based on the new household's income.

5. Real Estate in Cohabitation: Joint Ownership Is a Trap If Not Organized

Buying together without being married or in a civil union means buying as joint owners. And joint ownership, without clear agreement, is a major source of conflict.

The problem: "No one is required to remain in joint ownership" (Article 815 of the French Civil Code). This means either person can demand the sale of the property at any time, even against the other's wishes. Ownership shares: If you buy 70/30 but the notary deed states 50/50, the 50/50 prevails. Keep proof of your respective contributions. The solution: A notarized co-ownership agreement, for a modest fee (ask your notary for a quote), that defines operating rules, ownership percentages, and separation procedures. Another option: a real estate investment company (SCI), more expensive to set up but more protective long-term.

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PART 2: The 5 Psychological Aspects Nobody Addresses

6. Verify Your Real Motivations

The question isn't "do we love each other enough to live together?" but rather: "why now, and for what reasons?"

In cognitive behavioral therapy, I regularly identify implicit motivations that aren't good reasons to move in:

• Social pressure: "It's been two years, it's the natural next step."
• Economics: "We'll split the rent in half." (Valid reason, but insufficient alone.)
• Fear of losing the other: "If we don't move forward, they'll leave."
• Illusion of resolution: "We argue because of the distance, it'll be better living together."

Healthy motivations: The desire to share daily life, the ability to handle existing conflicts, the desire for a shared project, and — most importantly — having discussed it multiple times, not just in weekend enthusiasm.

7. Communication About Money: The Taboo That Destroys

Money is the primary source of conflict for couples moving in together (OpinionWay study, 2023). Not because amounts cause problems, but because the meaning of money is different for each person.

For one, paying more means "I take care of us." For the other, it means "I lose my independence." These interpretations are never discussed beforehand.

The CBT method: Before moving in, do this exercise. Each person answers separately in writing:

– What is my relationship with money? (Anxiety, control, generosity, indifference?)

– What do I see as the ideal distribution? (50/50, proportional to income, shared pool?)

– What are my non-negotiable expenses? (Sports, outings, savings, family gifts?)

Then compare your answers. Gaps reveal future friction zones.

8. Personal Space: A Need, Not a Rejection

Living together doesn't mean being together constantly. Yet most couples interpret the other's need for space as a negative signal: loss of interest, distance, relationship problem.

In CBT, we distinguish two common cognitive patterns:

– The abandonment schema: "If they want to be alone, they don't love me anymore."

– The fusion schema: "A real couple does everything together."

Both schemas are dysfunctional. Personal space — even symbolic (a reading corner, a weekly solo activity, the right to close a door) — is a factor of couple longevity, not a threat. These patterns often trace back to how each partner learned to handle closeness and separation growing up — a subject I explore in depth in Understanding Your Attachment Style, if this resonates with you.

Practical rule: Define acceptable alone time before moving in. "Tuesday evenings are my time." It's not rejection, it's relational hygiene.

9. Align Your Expectations About Daily Life

Big questions (children, marriage, location) are usually addressed. Daily questions, rarely. Yet these create wear and tear.

Questions nobody asks:

– Who does what with chores? (And what does "clean" mean for each person?)

– How do we handle guests? (Frequency, duration, notice?)

– What's the policy on screens in the evening? (TV, phones, computers?)

– How do we manage different wake and sleep times? (Different schedules?)

– What role for each other's families? (Visit frequency, vacation plans?)

The reality: According to an OpinionWay/Castorama study, decoration choices and the division of household chores are among the most common early friction points for couples moving in together. This doesn't reveal a cleaning problem, but a communication problem and unexpressed expectations. Take the test: Couple Communication Test → — Before you unpack the boxes, how well does your couple actually talk about the hard topics? This test assesses the quality of your communication.

10. The Exit Scenario: Discussing It Isn't a Lack of Trust

This is probably the most avoided topic, and yet the most important. Discussing what would happen "if it didn't work out" isn't a sign of pessimism. It's proof of maturity and mutual respect.

In practice:

– If we separate, who keeps the housing? (The lease holder? The one closest to work?)

– How do we divide furniture bought together?

– What's a reasonable timeline for one person to relocate?

– How do we manage the transition period?

The paradox: Couples who calmly address this before moving in are the ones least likely to separate. Why? Because they've demonstrated the ability to handle difficult subjects without panic or avoidance. This skill is exactly what makes couples last.

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Checklist: 15 Questions Before Moving In

Print this list. Each of you answer separately, then compare.

Legal questions:

Will both names be on the lease?

Have we written a mutual will?

Have we checked how our benefits agency needs to be notified of our new living situation?

If we're buying: do we have a co-ownership agreement?

Do we know our respective rights in case of separation?

Financial questions:

What expense-sharing model do we choose?

Do we open a joint account? If so, for what expenses?

What's the maximum housing budget we can manage without tension?

Do we have debts or financial commitments the other doesn't know about?

How do we manage personal savings?

Relationship questions:

What are our real reasons for moving in?

How do we currently handle conflicts? (Yelling, silence, discussion, avoidance?)

What are our personal space needs?

What are our daily expectations (chores, cooking, guests, screens, schedules)?

Have we discussed the exit scenario without it causing a fight?

Interpretation: Any question that remains difficult is worth discussing before you make a commitment. If a conversation keeps stalling, it may be helpful to consult a professional before moving in, not after.

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What Cohabitation Is — and What It Isn't

Cohabitation is a perfectly valid life choice. It offers flexibility that neither marriage nor civil union provides. But this flexibility has a price: the absence of automatic legal protection. Every aspect — housing, finances, inheritance, separation — must be organized voluntarily.

Psychologically, moving in together is a major transition. It's not simply "living at the same address." It's the daily confrontation of two systems of functioning, two family histories, two relationships with the world. This confrontation is enriching when it's prepared. It's destructive when it's endured.

The best investment you can make before moving in isn't a couch. It's an honest conversation.

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If you're considering moving in with your partner and some of these questions remain unanswered, couples therapy can help you clarify your expectations and build solid foundations. I see clients in my office and via video call. Book an appointment

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Gildas Garrec — CBT Psychotherapist Individual and couples therapy

Also read

• Moving in together: the complete guide before taking the leap
• We argue since living together: should we worry?
• LAT (Living Apart Together): being a couple while living separately
• Do I need therapy? 10 unmistakable signs

Before sharing a home, explore how you discuss money, needs and disagreements. The couple-communication questionnaire offers a structured starting point, with a paid personalized report.

Take our Couples Communication Test — 69 questions, anonymous, no account required. Personalized PDF report for €2.90.

Take the test →

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📖 To go further : to save your relationship with the Gottman method, the book Saving Your Relationship turns it into a step-by-step program.

FAQ

How should we split expenses when moving in together?

There's no single right formula — some couples split everything 50/50, others in proportion to income, others pool a shared account for joint expenses only and keep the rest separate. What matters most is agreeing on the method together, in writing if it helps, and revisiting it if your situations change.

How do we divide household chores fairly?

Talk about it explicitly rather than assuming a default. What counts as "clean" or "done" often differs between two people who grew up in different households — a short, concrete list of who does what tends to prevent resentment from building up silently.

Is it normal to still need personal space after moving in?

Yes. Wanting time alone doesn't mean something is wrong with the relationship. Naming that need out loud, and agreeing on some recurring alone time for each of you, generally supports the relationship rather than working against it. If this keeps causing friction, a couples therapist can help you find a workable balance.