Under Swiss tenancy law, termination of a residential lease is subject to very strict requirements of form and time, intended to protect the contracting parties and to ensure legal certainty.
The steps differ markedly depending on whether notice is given by the tenant or served by the landlord.
Requirements of form and protection of the family home
The validity of the notice depends strictly on compliance with the formal requirements imposed by federal legislation:
- Written form and the official form: The tenant may terminate the lease by a simple written letter bearing his original handwritten signature (sending it by fax or by e-mail without a qualified signature is void); the landlord, by contrast, is strictly required to give notice using an official form approved by the canton, which states the means of contesting the notice or requesting an extension and the applicable time limits, failing which the notice is wholly void.
- Increased protection of the family home: If the flat serves as a home for the family, or for a married couple or a couple bound by a registered partnership, the tenant may not terminate the lease without the express written consent of his spouse or partner; conversely, the landlord must serve the notice by means of two separate official forms addressed individually to each spouse or partner, even if only one of them signed the lease.
Ordinary time limits, termination dates and early return
The moment at which the notice takes effect is strictly governed by the contract and by the default rules of the statute:
- Statutory time limits and termination dates: For an open-ended residential lease, notice must observe a minimum period of three months for the termination date fixed by the contract or by local custom (or, if there is no such custom, for the end of a three-month period of the lease); the letter must reach the other party at the latest on the day before the notice period begins. Notice that arrives late, or for the wrong date, does not become void, but automatically takes effect on the next relevant termination date.
- Early release by proposing a replacement tenant: A tenant who wishes to return the premises before the termination date without observing the statutory notice period may be released from his financial obligations if he proposes to the landlord at least one replacement candidate who is solvent and objectively acceptable, and who is prepared to take over the lease on the same terms.
Where the landlord acts in order to occupy the dwelling himself, the conditions are those of termination for the landlord’s own use.
Legal sources
Federal legislation:
- Art. 266a para. 1 CO(cited byFederal Supreme Court judgment 4A_246/2023;Federal Supreme Court judgment 4A_315/2019 ) (the principle that an open-ended lease may be terminated by observing the notice periods and termination dates)
- Art. 266c CO (three-month notice period for residential leases)
- Art. 266l CO (requirement of written form for the tenant and duty to use the approved official form for the landlord)
- Art. 266m COandArt. 266n CO(cited byBGE 140 III 491;BGE 125 III 425 ) (the spouse’s consent and separate service of notice in the case of the family home)
- Art. 264 CO(cited byFederal Supreme Court judgment 4C.16/2000 ) (early return of the leased property and proposal of a solvent replacement tenant)
Federal case law:
- Federal Supreme Court judgment 4A_32/2024 (formal invalidity of notice given by fax, for want of an original handwritten or qualified signature)
- BGE 140 III 491 (requirement of separate service of notice on the spouses for the family home, and the reservation of abuse of rights)
- Federal Supreme Court judgment 4A_609/2020 (nullity of the notice if the termination date does not appear on the official form, and objective interpretation of whether the notice is ordinary or extraordinary)
- Federal Supreme Court judgment 4C.16/2000 (mandatory nature of the right to return the property early by proposing a replacement tenant)