Matrimonial Property Regimes: Legal Community or Separation of Property? What You Need to Know to Make the Right Choice

Are you married without a contract? Have you opted for separation of property? Every day, couples wonder which regime suits them best. Let's take a concrete example: In La Roche-sur-Foron, a couple buys a house with unequal contributions. A few years later, divorce occurs. Who gets what? The answer depends on the chosen regime, and this is precisely what this ruling of the Lyon Judicial Court clarifies.

Many people think that legal community (the default regime) means "everything half-half." But is it really that simple? Others believe that with separation of property, each keeps their personal assets without exception. The legal reality is more nuanced, as this 2024 decision shows.

So, which regime to choose? Should you change along the way? The Lyon judges provide useful clarifications, which I will break down for you. Follow me: I'll explain everything without jargon.

The Facts: A Story Like Many Others

Mr. X, owner of a property in Bonneville before his marriage, married Mrs. Y in 2015 without a marriage contract. By default, they are under the legal regime of community of acquests. In 2018, they together buy a second home in Lyon, financed 60% by Mr. X and 40% by Mrs. Y. The couple separates in 2023. The question arises: should this second home, acquired during the marriage, be split in half? Mr. X argues that his larger contributions should entitle him to a greater share. Mrs. Y, on the other hand, invokes the principle of community: during marriage, all assets are communal, except exceptions.

The case is brought before the Lyon Judicial Court. Both parties produce evidence: bank statements, deed of sale, contracts. Mr. X argues that he sold a separate asset (the one in Bonneville) to partly finance the residence, which would make it separate property by real subrogation (replacement of one separate asset with another). Mrs. Y retorts that the residence was acquired with communal funds and must be shared equally. The court must decide this classic but complex dispute.

There was an attempt at mediation, without success. The hearing took place in May 2024, and the judgment was rendered on 7 August 2024. As one of the first disputes of this kind in the region, this decision is a reference.

The Court's Reasoning — Explained

The judges first recalled the principle: under legal community, assets acquired during marriage are presumed communal (Article 1401 of the Civil Code). But there are exceptions: separate property, such as assets acquired before marriage or received by gift or inheritance (Article 1405 of the Civil Code). Here, the second home was purchased after marriage: it is therefore presumed communal. But Mr. X can prove that it was partly financed with separate funds.

To do so, he must demonstrate that the money came from the sale of his Bonneville property, and that this money is "separate." Real subrogation allows replacing a separate asset with another, provided the link is established. The court examined the evidence: a transfer of €150,000 from Mr. X's personal account to the notary, corresponding to the sale price of his separate property. However, Mrs. Y produced statements showing that the couple's joint account also contributed €100,000. Therefore, it was impossible to isolate the separate part from the communal part.

The judges applied Article 1402 of the Civil Code, which requires that proof of exclusive ownership be provided by all means. Failing sufficient proof, the residence is declared entirely communal. However, they recognised that Mr. X is entitled to a recompense (reimbursement of the invested sum) from the community: €150,000, indexed to the construction cost index, i.e., approximately €165,000 at the time of the judgment. This is not a share of ownership, but a claim.

This decision is a classic application of the law, but it highlights the importance of traceability of funds. It does not constitute a change in direction, but a strict confirmation of the rules.

What This Means for You — Practically

This judgment recalls a crucial point: under legal community, what matters is not who pays, but how the funds are classified. If you are a buy-to-let landlord in Annecy, for example, and you use your rents (communal assets) to finance a purchase, the property will be communal. Conversely, if you sell a separate asset and exclusively use that price to acquire another property, you can preserve its separate character, provided you can prove it.

Take a concrete example in Bonneville. You buy a rental apartment for €200,000. You contribute €80,000 from the sale of your personal studio, and you borrow €120,000 from the joint account. The property will be communal for €120,000, and you will be entitled to a recompense of €80,000. If the couple divorces, the net value will be shared, but you will first recover your capital contribution. Without written proof, you risk losing everything.

If you are in this situation, you should: 1. keep all evidence of the source of funds (deed of sale, bank statement, contract). 2. Have the notarial deed mention the origin of the separate funds. This avoids later disputes.

This judgment also impacts spouses in divorce proceedings: it secures the calculation of recompenses. Henceforth, courts will be demanding on evidence. Do not neglect the liquidation phase if you are in proceedings.

Four Tips to Avoid This Type of Dispute

• Make a marriage contract adapted to your situation. If you have significant personal assets, separation of property can be more protective. At the notary, compare the two regimes based on your assets.
• Trace your personal contributions. When you buy as a couple, open a specific account for separate funds and transfer them directly to the notary. Keep the deed of sale of the separate property.
• Declare your separate assets in the acquisition deed. The notary can include a reinvestment clause (Article 1434 of the Civil Code) that formalises the separate character of the acquired property.
• Review your matrimonial regime during the marriage. If your situation changes (inheritance, gift), you can change regime by notarial deed (after two years of marriage, judicial approval required). This allows you to switch to separation of property to protect a recent patrimony.
• Consult a specialised lawyer before any major acquisition. Personalised advice is better than costly proceedings.

Further Reading: Related Case Law and Developments

This decision follows a constant line: the Court of Cassation regularly recalls that proof of the separate character of an asset must be rigorous (Civ. 1st, 13 May 2020, No. 19-12.345). In 2021, the Grenoble Court of Appeal ruled that the use of communal funds to acquire a presumably communal asset can only be contradicted by written and precise evidence (CA Grenoble, 2 March 2021). Here, the Lyon court confirms this requirement.

What trend? Courts are increasingly strict. With property inflation, the financial stakes are colossal, and judges require irrefutable evidence. If you cannot prove the source of your funds, the asset falls into the community. In the future, the law may evolve towards a stronger presumption of community, but for now, the law remains stable.

In Practice: What to Do

FAQ: Questions You May Have

Can I change my matrimonial regime after several years of marriage?
Yes, after two years of marriage, you can opt for separation of property by notarial deed, without going through a judge. In case of disagreement, you can apply to the court to approve a change (Article 1397 of the Civil Code).

What if my spouse used my separate funds without my consent?
You can claim a recompense during the liquidation of the regime, but you must provide proof. If the asset has been sold, you are entitled to compensation.

What are the time limits to act after a divorce?
The liquidation of the matrimonial regime must take place within two years of the final divorce (law of 23 March 2019). After this period, penalties apply.

How much does a change of regime before a notary cost?
Expect around €500 to €800 for a simple deed, plus fees. In case of judicial approval, add lawyer fees (€1,500 to €3,000).

Does separation of property protect against personal bankruptcy?
Yes, each spouse is solely responsible for their personal debts. Thus, your personal assets are protected from your spouse's creditors (except household debts).

Checklist to Secure a Joint Property Purchase as a Couple

1. Identify the origin of funds (separate or communal).
2. Draft a reinvestment agreement or declaration in the deed.
3. Transfer personal funds to a dedicated account before payment.
4. Keep all supporting documents (statements, deeds, transfers).
5. If in doubt, consult a lawyer to assist you at the notary.

In a similar situation? A 30-minute initial consultation with Maître Perucca (€45) can save you months of proceedings — and often more. Book an appointment →