Marriage, Prenups, and the Matrimonial Property Regime When You Buy Property Abroad

Published on: June 18, 2026

You're standing at a foreign notary's office, ready to sign for your dream apartment, and the notary asks one question you didn't prepare for: "Which matrimonial property regime?" The answer you give in that moment can decide who actually owns the property, and what happens to it in a divorce or a death. This is the regime question most international buyers get blindsided by, and how to walk in ready.

Key facts at a glance

• In civil-law countries (France, Spain, Italy, Belgium, Portugal, etc.), marriage automatically creates a property regime. The default is usually community of property, assets acquired during the marriage are jointly owned.
• Under community of property, even if only one spouse signs the deed, the property can belong to both.
• Common-law buyers (UK, US) often have no "regime" concept and are caught off guard when a notary insists on one.
• To choose separation of property, you generally need a marriage contract before a notary (capitulaciones matrimoniales / contrat de mariage), often registered to be effective against third parties.
• Across the EU, Regulation (EU) 2016/1103 decides which country's law governs your regime, and the default tie-breaker is your first common habitual residence after marriage.

Why a notary asks about your marriage at all

In common-law jurisdictions like England or most US states, there is no statutory "matrimonial property regime." Spouses own what is titled in their name; on divorce, a judge distributes assets fairly, but that is an effect of divorce, not a property system operating during the marriage. So common-law buyers rarely think about regimes, until a civil-law notary makes it a required field on the deed.

Civil-law countries work differently. The moment you marry, you fall into a property regime by operation of law unless you contract out of it. That regime governs who owns what during the marriage, who can manage or sell it, and how it is divided on divorce or death. When you buy real estate, the notary must record the regime, because it determines whose asset the property legally becomes. There is no neutral "we'll sort it later" option at the signing table.

The two regimes that matter most

Community of property (Spanish sociedad de gananciales, French communauté réduite aux acquêts, Italian comunione dei beni) is the default in most civil-law countries when spouses make no other choice. Income, salaries, and assets acquired during the marriage belong to both spouses jointly, typically 50/50. The defining trap for buyers: under community, a property bought during the marriage is generally joint property even if only one spouse signs the purchase deed. Property owned before marriage, or received by gift or inheritance, usually stays separate.

Separation of property (separación de bienes, séparation de biens, separazione dei beni) keeps each spouse's assets and income distinct. What you earn and buy is yours; what your spouse earns and buys is theirs; there is no automatic pooling. The English/American system is interpreted by civil-law countries as functionally this kind of regime.

There are hybrids. The participation regime (separation during the marriage, with a sharing of gains at the end) is the default in Germany and Switzerland and available in Spain, Portugal, and France by contract. But for most cross-border buyers, the live decision is community versus separation.

Which country's law even applies to you?

This is the part that surprises international couples most: the regime that governs your marriage may not be the law of the country where you're buying, and may not be a law you ever consciously chose.

Across 18 EU countries, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Finland, France, Germany, Greece, Italy, Luxembourg, Malta, the Netherlands, Portugal, Slovenia, Spain, and Sweden, Regulation (EU) 2016/1103 (in force since 29 January 2019) determines which country's law applies to a couple's property regime. Where spouses have made no explicit choice, the default cascade is:

1. The law of the spouses' first common habitual residence after the marriage; failing that
2. Their common nationality at the time of marriage; failing that
3. The law with which they have the closest connection.

So a British-French couple who first lived together in France after marrying may find French community of property governs their estate, including a holiday flat they later buy in Spain. And under community, assets located abroad are still part of the joint estate: on a Spanish divorce, a house in France and a house in Spain are both thrown into the division. Location of the asset does not insulate it from the regime.

The Regulation also lets you choose your applicable law (within limits, generally a nationality or habitual-residence law of one spouse), made through a proper marriage or choice-of-law agreement. That choice is one of the cleanest ways to remove uncertainty before a cross-border purchase.

How to choose your regime before you buy

If you want separation of property, common for investors who want clean, individual ownership and a simpler exit, you generally cannot just tell the notary on the day. You need a formal instrument:

• In Spain, capitulaciones matrimoniales signed before a notary and registered in the Civil Registry to be effective against third parties.
• In France, a contrat de mariage before a notary.
• These can be signed before the wedding or during the marriage (a post-nuptial change), provided the formalities are met.

If you married abroad and want a civil-law country to respect your existing regime, be ready to prove it: marriage certificate, any prenuptial agreement, and sometimes an official extract of the relevant foreign law, often apostilled and officially translated. A notary cannot simply take your word for it.

A practical sequence for buyers:

1. Establish which law governs your regime (often your first-common-residence law) and what that regime is by default.
2. Decide whether the default serves your purchase. For an investment held in one name, separation is frequently cleaner; for a shared family home, community may match your intentions.
3. If you want to change or confirm it, sign the appropriate notarial agreement before the purchase, and have proof of your regime ready for the buying notary.
4. Coordinate with succession planning. The regime interacts with forced-heirship rules and your will, which is a separate but linked decision.

Why this matters more for a foreign asset

Three scenarios make the regime decisive, and all of them are amplified when the property sits in a country that is not your own:

• Divorce. The regime, not the title on the deed, usually decides whether the foreign property is split. Translating a community-property judgment into a country that doesn't recognise the concept can require extra deeds, notarisations, or even fresh proceedings abroad.
• Death. The regime determines what is in the joint estate before succession rules even apply, which interacts with the forced-heirship regimes common in civil-law countries.
• Selling or remortgaging. Under community, the non-signing spouse may still have rights and consents that affect a future sale, even if their name was never on the original deed.

This guide complements our pieces on buying property abroad as an unmarried couple and property and divorce across borders. Together they cover the relationship-status questions that quietly shape who owns your foreign home.

Frequently asked questions

Does marriage affect property ownership when buying abroad?
In civil-law countries, yes, significantly. Your matrimonial property regime can make a property jointly owned even if only one spouse signs the deed, and it governs how the property is split on divorce or death.

What is a matrimonial property regime?
It's the legal system governing how married spouses own, manage, and divide property. The two main types are community of property (assets acquired during marriage are shared) and separation of property (each spouse keeps their own).

If only my name is on the deed, is the property only mine?
Not necessarily. Under a community-of-property regime, a property bought during the marriage is typically joint regardless of whose name appears on the deed. Under separation of property, it would be yours alone.

Which country's law applies to my marriage if we live in the EU?
Under EU Regulation 2016/1103, if you made no choice, the default is usually the law of your first common habitual residence after marriage. You can also choose an applicable law via a formal agreement.

How do I choose separation of property before buying abroad?
By signing a marriage contract (capitulaciones matrimoniales in Spain, contrat de mariage in France) before a notary, ideally before the purchase, and registering it where required so it is effective against third parties.

Plan the purchase before you sign

The regime question is one of several legal layers that decide who really owns a cross-border home. Plan your purchase with country-level legal and market intelligence across 50+ markets on JanusHermes before you sit down at the notary.

This article is general information for international buyers, not legal advice. Matrimonial property law, the rules on which country's law applies, and forced-heirship interactions are complex and vary by jurisdiction. Before buying abroad, consult a notary or family-law specialist in the relevant country to confirm your regime and document any change in advance.