Lex Koller and Your Residence Permit: What Foreign Buyers Need to Know

What Is Lex Koller?

Lex Koller is the informal name for the Swiss federal law restricting the acquisition of real estate in Switzerland by "persons abroad." The definition of "person abroad" is not simply about nationality — it depends heavily on your residence status in Switzerland, the type of property you want to buy, and how you intend to use it. This makes Lex Koller one of the most misunderstood aspects of Swiss property law for expats.

The law's core purpose is to limit foreign ownership of Swiss land and housing, particularly for investment and holiday purposes, while allowing people who genuinely live and work in Switzerland to buy a home.

Swiss Citizens and Permit C Holders

Swiss citizens are not affected by Lex Koller at all. The same applies to foreign nationals holding a Permit C (permanent residence permit) — once you have this status, you are treated the same as a Swiss citizen for real estate purposes. You can buy residential property, holiday homes, investment property, or land without needing any special authorization under Lex Koller.

Permit B Holders (EU/EFTA Nationals)

Under the Agreement on the Free Movement of Persons, EU/EFTA nationals who hold a valid Permit B and are actually domiciled (living) in Switzerland are generally treated like Swiss residents when buying a property to use as their main home. No Lex Koller authorization is typically required for this purpose.

However, this favourable treatment usually applies specifically to a primary residence. Buying a second home, a holiday property, or a pure investment property is a different matter and may still fall under Lex Koller restrictions, depending on the canton and the specific facts.

Permit B Holders (Non-EU/EFTA Nationals)

Non-EU/EFTA nationals with a Permit B who are lawfully and actually resident in Switzerland can generally also buy a home to live in as their main residence without needing Lex Koller authorization. The key legal test is genuine domicile — you must actually live in Switzerland, not just hold the permit on paper. As with EU/EFTA permit holders, buying beyond a primary residence (second homes, buy-to-let, land banking) is more restricted and often requires cantonal approval, if it's possible at all.

Because practice can vary somewhat by canton, it's worth checking with the cantonal Lex Koller authority or a local notary before assuming a purchase is unrestricted.

Permit L, Permit G, and No Swiss Permit

People in more transitional or non-resident categories face the tightest restrictions:

• Permit L (short-term residence permit): Generally treated as a "person abroad" under Lex Koller. Buying property is usually restricted unless a specific exemption applies.
• Permit G (cross-border commuters): Since holders of this permit live abroad and only work in Switzerland, they are typically treated as foreign for Lex Koller purposes and face similar restrictions to non-residents.
• No Swiss residence permit at all (living abroad): This is the most restricted category. Purchases are generally limited to specific situations — such as holiday apartments in designated tourist areas — and are subject to cantonal authorization and quotas that vary from canton to canton and can change over time.

If you fall into one of these categories, don't assume a purchase is possible just because a seller or agent tells you so. Authorization requirements, quotas, and eligible property types differ by canton and are periodically revised.

Property Type Matters Too

Regardless of permit status, the type of property affects how Lex Koller applies:

• Primary residence: Most favourable treatment for residents with genuine domicile in Switzerland.
• Holiday/second homes: Subject to cantonal quotas and authorization even in many cases where a primary residence purchase would be unrestricted.
• Investment or rental property: Generally the most restricted category for anyone classified as a "person abroad."
• Commercial premises used for an actual business activity: Often exempt from Lex Koller regardless of nationality or permit, since the law is primarily aimed at limiting foreign ownership of housing, not business premises.

Practical Steps Before You Buy

• Confirm your exact permit category and whether you are considered domiciled in Switzerland for Lex Koller purposes.
• Ask the notary or the cantonal Lex Koller authority (often part of the cantonal land registry or justice department) whether your intended purchase requires authorization.
• If you plan to change how the property is used later (e.g., renting it out, or moving away and keeping it as a holiday home), understand that this can trigger fresh Lex Koller scrutiny.
• Get written confirmation where possible, rather than relying on informal assurances from sellers or agents.

A Final Word

Lex Koller is a federal law, but its practical application involves cantonal authorities, notaries, and sometimes case-by-case judgment calls about domicile and intended use. Because rules and quotas can differ by canton and change over time, always verify current requirements directly with the relevant cantonal authority.

---

This article provides general information only and is not legal, tax, mortgage, or financial advice. Rules under Lex Koller vary by canton and individual circumstances. Please confirm your specific situation with a qualified lawyer, notary, or the competent cantonal authority before making any property purchase decisions in Switzerland.