Primary Residence vs Secondary Residence in Switzerland

The core distinction

A primary residence (résidence principale / Hauptwohnsitz) is the address where a person is officially registered as a resident — their legal domicile. In Switzerland, every person must register their domicile with the local commune (Einwohnerkontrolle), and this registration determines where they pay cantonal and communal taxes, where their children attend school, and where they receive official correspondence.

A secondary residence (résidence secondaire / Zweitwohnsitz) is any other dwelling owned by the same person. It is not their registered domicile. The owner may use it regularly, seasonally or rarely — the frequency of use is irrelevant to the classification.

Legal consequences

Under Lex Weber, the primary/secondary distinction determines what can be built in restricted municipalities. New residential construction in municipalities above the 20 percent threshold must be primary residences — secondary residences cannot be newly built.

Under Lex Koller, the distinction is also relevant: non-resident foreign buyers can only purchase a holiday home (which is, by definition, a secondary residence). They cannot purchase a primary residence because they do not reside in Switzerland.

Tax consequences

The primary/secondary distinction has significant tax implications. A primary residence is taxed in the municipality of domicile — the owner pays cantonal and communal income and wealth taxes there. A secondary residence is subject to property tax in the municipality where it is located, but the owner's income and wealth taxes remain payable at their primary domicile.

In practice, this means that a foreign buyer with a holiday home in Montreux pays Swiss property tax in Montreux but pays income and wealth taxes in their country of primary residence. Double taxation treaties may apply to prevent double taxation on the same assets.

Changing classification

A property's classification can change if the owner moves their registered domicile. If an owner of a secondary residence in Montreux moves to Montreux and registers their domicile there, the property becomes their primary residence. This change must be notified to the municipal authorities and may have tax and regulatory consequences.

Conversely, if an owner of a primary residence in Montreux moves away and registers their domicile elsewhere, the property becomes a secondary residence. In a Lex Weber-restricted municipality, this change of classification is permitted for existing properties but cannot be reversed by building a new secondary residence.

Key points

• Primary residence = registered domicile; secondary residence = any other owned dwelling
• Classification is based on official registration, not frequency of use
• Lex Weber restricts new secondary residences in municipalities above 20%
• Tax obligations differ significantly between primary and secondary residences
• Classification can change if the owner moves their registered domicile