Under Swiss tenancy law, a tenant who sublets an entire apartment must have a genuine, demonstrable intention to reoccupy the property (known in German as Rückkehrabsicht). According to binding Swiss Federal Supreme Court case law (including landmark rulings BGE 134 III 574 and BGE 138 III 59), subletting under Article 262 of the Swiss Code of Obligations (CO) is inherently intended to accommodate temporary absences. If a tenant moves away permanently and sublets the apartment indefinitely without an intention to return, it constitutes an unlawful lease transfer, entitling the landlord to refuse consent or issue an extraordinary termination under Article 257f CO.

Key Takeaways on Intent to Return in Swiss Subletting:

  • Mandatory for whole apartment sublets: When relinquishing total possession of the property, the tenant must plan to re-establish residence in the future.
  • No permanent commercial subletting: Keeping an affordable Swiss rental indefinitely to profit from subletting or as a backup without residing in it is unlawful.
  • Recognized legal grounds: Temporary overseas corporate assignments, international study exchanges, sabbaticals, or trial cohabitation (typically up to 1–2 years).
  • Landlord verification rights: Property managements may request reasonable proof of the temporary nature of your absence under Art. 262 para. 2 lit. a CO.
  • Severe eviction risk: Falsely claiming an intent to return can trigger a 30-day lease termination under Art. 257f CO with no lease extension relief.
Verified in accordance with Swiss Tenancy Law (Art. 262 & 257f CO, BGE 134 III 574 & 138 III 59) by the onlinedokument.ch legal editorial board.

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1. Legal Framework: Why the Swiss Federal Supreme Court Requires an Intent to Return

Under Article 262 paragraph 1 of the Swiss Code of Obligations (CO), a tenant has the general right to sublet with landlord approval. Although the statutory text does not explicitly mention the term "intent to return", the Swiss Federal Supreme Court (Bundesgericht) established this doctrine through landmark precedents:

a) Landmark Decisions BGE 134 III 574 and BGE 138 III 59

In BGE 134 III 574, the Supreme Court ruled that subletting is legally designed to help a tenant bridge a temporary absence without being forced to forfeit a long-term lease. However, when a tenant permanently moves away with no concrete plan or realistic prospect of returning, they are essentially attempting an unauthorized transfer of lease (*Vertragsübernahme*) or bypassing the regular replacement tenant rules. Tenants cannot act as commercial intermediaries or hoard apartments while residing elsewhere.

b) Essential Disadvantage to the Landlord (Art. 262 para. 2 lit. c CO)

Subletting without intent to return creates an "essential disadvantage" for the landlord under Art. 262 para. 2 lit. c CO. The property owner is forced to endure an occupant with whom they have no direct contractual privity, while the contractual primary tenant has no personal presence in the apartment. Consequently, landlords have a solid legal basis to reject the sublease request.

2. Subletting the Entire Apartment vs. a Single Room (Flatshare): What Applies?

In Swiss housing practice, the rule on intent to return depends on whether you hand over the whole home or just a room:

Sublet Type Intent to Return Required? Legal Justification
Whole apartment sublet Yes, strictly mandatory Total relinquishment of possession. Without a plan to return, it constitutes an abusive circumvention of tenancy rules.
Room sublet (Flatshare / WG) No, not required The primary tenant continues to reside in the apartment as their actual primary residence.

3. Recognized Legitimate Reasons and Permissible Timeframes

Swiss tenancy conciliation authorities (*Schlichtungsbehörden*) and courts accept several genuine life circumstances as justification for a temporary whole-apartment sublease:

  • Corporate Expat Assignments & Overseas Secondments: Fixed-term employment transfers abroad or temporary scientific research postings (typically 6 months to 2 or 3 years).
  • University Study Programs: Exchange semesters, master's degrees at foreign universities, or clinical internships in other cantons.
  • Sabbaticals or Extended World Travel: Planned leave of absence of 3 to 12 months with a firm schedule to return.
  • Family Caregiving: Temporary relocation to assist elderly, ill, or recovering family members.
  • Trial Cohabitation with a Partner: Swiss courts recognize that tenants moving in with a partner may test living together for up to 1 or 2 years before giving up their independent rental.

Unlawful Reasons: Moving permanently into a purchased home, relocating permanently with a spouse to a new canton, or keeping the lease solely to earn commercial profit on platforms like Airbnb is not protected.

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4. Proof Requirements: What Evidence Can the Landlord Request?

According to Art. 262 para. 2 lit. a CO, tenants must disclose the terms of the sublet. When management asks about your expected return date, you must provide plausible corroborating evidence:

  • Fixed-Term Sublease Agreement: A contract with a clearly stated end date (e.g., 12 months fixed) confirms the temporary character.
  • Employment or Secondment Letter: An official employer document confirming a temporary posting abroad.
  • University Enrollment Certificate: Proof of an exchange program or educational term.
  • Travel Itinerary: Flight confirmations or sabbatical leave approvals.
  • Formal Request Letter: In your written subletting application to the landlord, explicitly declare your intention to return on the specified date.

5. Consequences of Lacking Intent to Return: Eviction Risks (Art. 257f CO)

Falsely claiming an intent to return carries severe legal and financial risks:

a) Lawful Refusal of Consent

If a tenant requests an open-ended whole-apartment sublease and cannot present plausible return prospects, the landlord may legitimately deny permission.

b) Warning and Extraordinary Termination (Art. 257f para. 3 CO)

If the tenant proceeds without permission (see subletting without landlord consent consequences), the landlord will issue a formal written warning. If the tenant fails to terminate the sublease immediately, the landlord can terminate the primary tenancy with only 30 days' notice to the end of a month.

c) No Lease Extension Granted

Before the local rental conciliation authority, a tenant who does not occupy the apartment will be denied a lease extension (*Mieterstreckung* under Art. 272 CO), as courts find no hardship for someone who has already relocated.

Frequently Asked Questions (FAQ) on Sublease Intent to Return

1. Do I need to formally prove that I will return to the apartment?

You do not need a notarized guarantee, but you must make your return plausible. A fixed-term sublease contract matching your overseas assignment or study period, together with a written explanation, is usually fully sufficient.

2. How long can a temporary sublease with intent to return last?

Swiss law sets no rigid statutory cap. In practice, durations of 6 months up to 2 years are routinely accepted. Beyond 3 years, courts apply stricter scrutiny, as the likelihood of genuine reoccupation diminishes.

3. Does intent to return apply if I only sublet one room in my apartment?

No. When subletting an individual room in a shared apartment (WG) while continuing to live there, you retain possession of the premises. The legal doctrine of intent to return applies strictly to subletting the whole apartment.

4. What happens if my plans change and I decide not to return?

If your circumstances change permanently, you must officially terminate your main tenancy in accordance with statutory notice periods or propose a solvent replacement tenant. Continuing to sublet without intent to return becomes legally abusive.

5. Is trial cohabitation accepted as a valid temporary reason?

Yes. Swiss conciliation bodies and courts acknowledge that tenants moving in with a partner may test living together for up to 12 months before definitively relinquishing their lease.

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