Ending a Tenancy in Switzerland: Notice Periods, Termination Rules and Erstreckung

Ending a tenancy in Switzerland involves more than picking a moving date and writing a letter. The law sets a specific notice period for dwellings, requires the landlord to use an officially approved form, and gives a tenant two separate ways to push back, a challenge to the termination itself and a request to stay longer even after a valid notice.

This page walks through the standard notice period under Art. 266c OR, the form requirement that makes a landlord's termination void if ignored, and the grounds and deadlines for contesting a termination or requesting an Erstreckung, an extension of the tenancy. It also works through the calendar so a reader can see exactly which day a deadline actually falls on, since missing one of these windows generally forecloses the remedy entirely. It is part of our wider Swiss tenant law coverage, itself part of the broader guide to Swiss law.

Information last verified on 21 July 2026. This page provides general legal information about Swiss law and does not constitute legal advice in an individual case.

Notice periods under Art. 266c OR

A dwelling lease in Switzerland is ended with three months notice, given to a locally customary termination date, the ortsüblicher Termin. Many regions treat the end of March, June, September or December as that customary date, though the actual custom is set locally rather than nationally.

Where no local custom exists, notice instead runs to the end of a three month rental period counted from whenever the notice is given. Either the landlord or the tenant can give this notice, and the same rule about the termination date applies to both sides equally.

This is a different rule from notice in an employment relationship. Under Art. 335c OR an employment contract always ends on the last day of a calendar month, with no equivalent local custom exception available there.

A concrete example shows how this works in a canton where the ortsüblicher Termin is the end of March, June, September and December. A tenant who wants to move out at the end of September has to give notice, in writing, no later than three full months in advance, meaning by the end of June. Give notice any later, for example in July, and the earliest available termination date shifts forward to the end of December, since three months no longer reach the September date.

The landlord's official form: Art. 266l and Art. 266o OR

Both the landlord and the tenant must terminate a dwelling or business lease in writing. That much applies to either side under Art. 266l Abs. 1 OR.

The landlord carries an extra requirement the tenant does not. Under Art. 266l Abs. 2 OR the landlord must terminate on an official form approved by the canton, one that also tells the tenant how to contest the notice or request an extension. A tenant's own notice to end the lease has no equivalent official form requirement; a plain written notice is enough.

This form requirement is unconditional. It applies in every canton, to every landlord terminating a dwelling or business lease, with no housing shortage trigger and no exception for a landlord who has a perfectly good reason to end the tenancy.

Skip the form, or use the wrong one, and the termination is void outright under Art. 266o OR. This is a stronger consequence than a termination merely being contestable as abusive, covered below. A void notice is treated as though it was never given at all, regardless of how legitimate the landlord's underlying reason was.

Do not confuse this with a different form that surfaces elsewhere in Swiss tenancy law. Art. 270 Abs. 2 OR lets specific cantons require a landlord to disclose the prior tenant's rent on an official form when a new lease begins, and that requirement only applies where the canton has ordered it because of a housing shortage. Our initial rent challenge page covers that separate rule in detail; the Art. 266l termination form discussed here is a completely different document, for a completely different purpose, and it applies everywhere regardless of housing conditions.

Contesting a termination as abusive: Art. 271 and Art. 271a OR

A termination that complies with the notice period and uses the correct form is not automatically beyond challenge. Art. 271 OR lets a tenant contest any termination that violates the general principle of good faith, and the party terminating must give reasons for it if asked.

Art. 271a OR then lists specific situations where a landlord's termination is presumed to be exactly that kind of bad faith termination. These include ending the tenancy because the tenant asserted a legitimate claim, because the landlord wants to force through a one sided change to the lease or a rent increase, solely to pressure the tenant into buying the unit, during a related conciliation or court proceeding, or within three years after a related proceeding in which the landlord substantially lost, withdrew or materially narrowed the claim, waived the court route, or reached a settlement with the tenant.

A further ground applies where the termination follows a change in the tenant's family situation and causes no material disadvantage to the landlord. Several of these grounds do not apply where the landlord has an urgent personal need for the unit, where the tenant is in payment default, where the tenant seriously breached a duty of care toward the property, where the property is being sold, where the landlord terminates for important cause under Art. 266g, or where the tenant has gone bankrupt.

Erstreckung: staying longer even after a valid termination

A tenant can also ask to stay in the unit longer than the notice would otherwise allow, even where the termination itself is entirely valid. Art. 272 OR calls this an Erstreckung, and it is available where ending the tenancy would cause the tenant or their family a hardship that the landlord's own interests do not justify.

The Schlichtungsbehörde weighs several factors in deciding whether to grant it: the circumstances in which the lease was originally agreed, how long the tenancy has lasted, the tenant's personal, family and economic situation and conduct, how urgent the landlord's own need for the unit actually is, and conditions on the local rental market. For a second extension, the authority also asks whether the tenant did everything that could reasonably be expected to avoid the hardship in the meantime.

A dwelling lease can be extended by up to four years in total, granted as one or two separate extensions rather than an open ended arrangement. Business premises can be extended by up to six years under the same one or two extension structure.

An Erstreckung is not available in every case, even where hardship is real. It is excluded where the termination followed the tenant's payment default, a serious breach of the tenant's duties, the tenant's bankruptcy, a lease deliberately limited to an upcoming renovation or demolition, or where the landlord is offering an equivalent replacement unit.

The deadlines: Art. 273 OR, and why they matter more than anything else here

Every one of these remedies is time limited, and the deadlines run independently of each other. Missing one does not just weaken a case, it forecloses that particular remedy entirely, regardless of how strong the underlying argument would otherwise have been.

Both the 30 day window to contest an abusive termination and the 30 day window to request an Erstreckung on an open ended lease run from the same moment, receipt of the notice, and a tenant facing an unwelcome termination often has reason to consider both at once. A fixed term lease works differently: since there is no termination notice to receive in the ordinary sense, the Erstreckung request instead has to reach the Schlichtungsbehörde at least 60 days before the lease's own stated end date.

A worked timeline

Take a tenant on an open ended lease who receives a termination notice on 1 March. Both the deadline to contest the termination as abusive and the deadline to request an Erstreckung fall on the same date, 31 March, thirty days later. Missing that date forecloses either option, even if the tenant only decided to act on day 32.

A different timeline applies to a tenant on a fixed term lease due to end on 30 September. That tenant's Erstreckung request has to reach the Schlichtungsbehörde by 1 August at the latest, sixty days before the lease ends, regardless of when or whether a termination notice was ever sent.

Where these disputes are heard: the Schlichtungsbehörde

Both a challenge to a termination and an Erstreckung request go to the same body, the Schlichtungsbehörde in Mietsachen, the conciliation authority for tenancy disputes. This is a mandatory first stop rather than an optional step; these disputes cannot go straight to a civil court.

There is no court fee for this kind of dispute under Art. 113 Abs. 2 lit. c ZPO. Neither side is awarded the other side's costs regardless of outcome, so each party normally covers only its own expenses.

A lawyer is not required, though a party may bring one or a trusted person along for support. Art. 204 ZPO requires both parties to appear in person at the hearing itself, with representation instead of personal appearance limited to specific situations such as living abroad or being unable to attend because of illness or age.

For a fuller walkthrough of what a Schlichtungsbehörde hearing actually involves, see our Swiss tenant law hub. A rent increase raised during the tenancy is governed by an entirely separate set of rules, covered on our rent increases page, and does not affect the notice and Erstreckung rules described here.

What this means in practice

A tenant who receives a termination notice has several separate questions to work through quickly: whether the correct notice period was given, whether the landlord used the required official form, whether there is a real argument that the termination is abusive, and whether ending the tenancy now would cause a genuine hardship worth raising as an Erstreckung.

None of these four questions depend on each other, and a weak answer on one does not rule out pursuing another, provided the relevant deadline above has not already passed.