The landlord terminates: when the notice is void, how to expose a bogus «own-use» claim and keep your home years longer with the 30-day trick, with a challenge checker, deadline calculator and a ready-made conciliation letter
A letter with an official stamp in your mailbox, and the ground gives way: the landlord is terminating your lease.What almost no one knows, yet changes everything: a landlord's termination is only valid on the official form, otherwise it is simply void. And even a correct termination you can challenge within 30 days or push back by up to four years through an extension. Here is the checker that tells you in a minute whether your termination falls, the calculator for the sacred 30-day deadline and the ready-made letter to the conciliation authority, free of charge.
💡 Before you panic: is the landlord even allowed to terminate ?
The short answer: yes, but on a long leash. The landlord may give ordinary notice on an open-ended lease without having to state a reason, as long as they observe the form and the deadline. And that is exactly where the first, often decisive hurdle lies: a termination of residential or commercial premises is only valid if served on the cantonally approved official termination form (Art. 266l CO). That form explains how you can challenge the notice or request an extension. If it is missing, or the notice arrives by plain letter or e-mail, it is void, i.e. legally non-existent (Art. 266o CO).
The second lever to know is the difference between void and challengeable. A void notice (wrong or missing form, or, for a family home, no separate service on the spouse under Art. 266n CO) has no effect from the outset: you need do nothing, the lease continues. A challengeable notice, by contrast, is formally correct but breaches good faith on the merits (Art. 271 CO) or falls within a protection period (Art. 271a CO). It is only set aside if you act actively and on time, within 30 days of receipt, before the conciliation authority. Miss that deadline, and even an abusive notice becomes valid.
Against a landlord's termination you have three routes, from «notice gone» to «buy time»:
🚦 Is your notice challengeable ? The challenge checker
Before you get lost in the articles, clarify in a minute where you stand. The ConvivaPlus challenge checker asks you five questions about form, deadline, reason and hardship and shows you whether your notice is challengeable, or even void (green), whether realistically you are only playing for an extension (amber), or whether the 30-day deadline has already passed (red). Then you know which of the three routes is yours.
🚦 ConvivaPlus challenge checker
Five questions, and you know whether to challenge, extend or act before the deadline runs out.
Did the notice arrive on the cantonally approved official termination form (not just by letter/e-mail) ?
Did you receive the notice less than 30 days ago ?
Did the notice come within 3 years of a tenancy dispute or conciliation that turned out well for you ?
Does the landlord have an objective, plausible reason (e.g. genuine own use, renovation) ?
Would leaving be a real hardship for you or your family (age, illness, school-age children, no alternative) ?
How the ConvivaPlus challenge checker judges: if the official form is missing, the protection period applies (Art. 271a CO) or any objective reason is absent, we class the notice as challengeable, up to void (green). If it is correct and justified but leaving is a hardship, we point to the extension (amber). If receipt was more than 30 days ago, we warn about the missed deadline (red). This assessment is the reading according to ConvivaPlus, derived from Art. 271, 271a, 272 and 273 CO, and does not replace a case-by-case review.
🏠 «Own use»: the most common reason, and where it crumbles
No word comes up more often in landlord terminations than own use. The principle: the landlord may terminate if they need the flat for themselves, close relatives or in-laws, that is a legitimate interest and not an abusive notice. The decisive nuance, however, comes with a change of owner: whoever buys a rented property takes over the lease (Art. 261 para. 1 CO), «sale does not break the lease». The new owner may only give extraordinary notice, i.e. faster than the contract allows, if they assert an urgent own need for themselves or close relatives (Art. 261 para. 2 let. a CO), and only within the statutory deadline for the next statutory date.
«Urgent» is no filler word here but a high bar: the Federal Supreme Court requires current, serious grounds, a mere «it would be convenient» does not suffice. And the key point for you: if the buyer misses the first possible extraordinary termination, they forfeit this special right and remain bound to the running contract and its deadlines. Moreover, even a justified own-use claim does not exclude the extension, it only feeds into the balancing of interests. In concrete terms: even if the own use is genuine, you can often gain months or even years, especially in hardship cases such as illness, old age or school-age children.
Three constellations where the wheat is separated from the chaff:
📅 How long do you have ? The 30-day deadline calculator
With a landlord's termination, a single date decides everything: the receipt of the notice. From that day the 30-day deadline runs to challenge the notice or request an extension (Art. 273 CO), a deadline that cannot be extended. Enter the date of receipt, and the ConvivaPlus calculator gives you the last day on which your request must reach the conciliation authority, the days remaining and the maximum extension period for your property.
📅 ConvivaPlus 30-day deadline calculator
Enter the date you received the notice → last day to apply to the conciliation authority, days remaining and maximum extension period.
Guide value without guarantee. What matters is actual receipt of the notice; for registered letters the collection period applies. When in doubt, file a day earlier.
How the ConvivaPlus calculator works: the 30-day deadline begins on the day after the notice is received and ends on the 30th day; what counts is actual receipt (the date on which you could collect the letter), not the date on the document. The challenge or extension request must have reached the conciliation authority by that day (Art. 273 CO). The maximum extension is four years for residential and six years for commercial premises (Art. 272b CO). This calculation is the reading according to ConvivaPlus and does not replace legal advice.
✉️ Your conciliation request in 2 minutes
You know you want to act, now you need the document. Enter your key details, and the generator builds you a request to the conciliation authority in proper form: it names the contested notice, the date of receipt and your request, to have the notice declared invalid or the tenancy extended. Download as a PDF, sign it, file it with the conciliation authority of your locality, done. You can also copy the text.
🛠️ Conciliation request generator
Enter your details → a ready challenge or extension request to the conciliation authority, as a PDF or to copy. Free, no registration.
📊 The ConvivaPlus challenge-chances matrix
So you can see at a glance where you stand: the ConvivaPlus challenge-chances matrix assigns the most common termination constellations to their legal basis and a realistic chance of success, from «very high» (a formal defect or clearly contrary to good faith) to «low» (clean, urgent own use). Below it, the deadline overview shows you the dates that decide your protection, plus a comparison of the maximum extension period.
| Constellation | Legal basis | Chance |
|---|---|---|
| No / wrong official form | Art. 266l, 266o CO (void) | very high |
| Family home: not served on both spouses | Art. 266n CO (void) | very high |
| Notice within the 3-year protection period | Art. 271a para. 1 let. e CO | high |
| Retaliatory notice after a defect complaint | Art. 271a para. 1 let. a/b CO | high |
| Pretextual / vague own use | Art. 271 CO (bad faith) | medium |
| Genuine own use + hardship case | Art. 272 CO (extension) | Extension |
| Buyer's urgent own need, clean | Art. 261 para. 2 let. a CO | low |
| Correct notice, no hardship, deadline missed | Art. 273 CO (deadline) | low |
The chance is an assessment drawn from practice, not a ruling: every case is judged individually. «Extension» means: a challenge is difficult, but buying time is realistic. Your concrete deadline is given by the calculator above.
Maximum extension period by property type (Art. 272b CO)
Source: OR Art. 272b (fedlex.admin.ch)
How the ConvivaPlus challenge-chances matrix arises:we assign each constellation to the relevant CO provision and derive the chance of success from the structure of the law and the Federal Supreme Court's practice, formal defects (voidness) at the top, clean urgent own use at the bottom. The assessment is the reading according to ConvivaPlus, an orientation grid that does not replace the conciliation authority's case-by-case assessment.
⚠️ The five costliest mistakes after a landlord's termination
Whoever avoids these mistakes keeps their home longer, or does not lose it at all:
Letting the 30-day deadline slip. This is the costliest mistake of all. After 30 days from receipt, challenge and extension are over: even an abusive notice then becomes valid. React at once, not only once you have found a replacement flat.
Not checking the official form. Many terminations arrive formally defective: with no form, an outdated template, or, for a family home, addressed to one person only. Such notices are void. Look at the form first, before you do anything else.
Swallowing «own use» uncritically. Own use is no magic word. Demand the reason in writing, check whether it is urgent and genuine, and watch what happens to the flat after you leave. Pretextual own use is challengeable.
Not substantiating hardship grounds. Whoever wants an extension must make the hardship credible: age, illness, school-age children, an unsuccessful flat search. Gather evidence (medical certificates, rejections to enquiries) before going to conciliation.
Stopping rent payments in protest. A widespread and dangerous misconception. Whoever withholds rent during the dispute risks an extraordinary termination for default (Art. 257d CO), which is then hard to challenge. Keep paying, even while you challenge.
A termination is not a verdict but an assertion. Form, reason and deadline decide whether it holds, and often that is in your hands.
✅ From termination to challenge in 6 steps
Here is how to proceed after receiving the notice, calmly and in the right order:
The underrated lever is the date of receipt, not the date of the letter. A registered termination is only deemed received when you collect it, at the latest at the end of the seven-day collection period. So whoever is on holiday does not see their 30-day deadline run from the date on the document. And the second trick: even those with no chance of a challenge should almost always file an extension request, the mere months or years gained at full rent are often worth more than any lawsuit, and conciliation costs nothing.
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❓ Frequently asked questions on landlord termination
The key questions when the landlord has given notice, short and concrete, from form through own use to extension.
People also ask
Related questions from our magazine
All information without guarantee. Found an error? → support@conviva-plus.ch
A registered landlord's termination is only deemed received when you collect it, at the latest at the end of the seven-day collection period, and not already on the date on the document. Only from this receipt does the 30-day deadline to challenge run (Art. 273 CO).
More help around termination and tenancy
Templates and guides for every situation in a tenancy
Discussion
8 voices from the community
Die Kündigung kam per normalem A-Post-Brief, kein amtliches Formular. Hätte ich das hier nicht gelesen, hätte ich brav eine neue Wohnung gesucht. So habe ich der Verwaltung geschrieben, dass die Kündigung nichtig ist, und tatsächlich, sie haben es zurückgenommen. Wahnsinn, einfach durch die Form.
Danke, Andrea, und genau das ist der Punkt: Zuerst die Form prüfen, bevor man irgendwas anderes macht. Schön, hat es bei dir so klar geklappt. Tipp: die Bestätigung der Rücknahme schriftlich aufbewahren.
Bei uns hiess es Eigenbedarf, der Sohn des Vermieters ziehe ein. Drei Monate nach unserem Auszug war die Wohnung auf Homegate, 400 Franken teurer. Im Nachhinein klar vorgeschoben. Wir haben es leider zu spät gemerkt, die 30 Tage waren schon rum. Lehrt: sofort handeln und den Grund schriftlich verlangen.
Der Frist-Rechner hat mir die Augen geöffnet. Ich dachte, ab dem Datum auf dem Brief. Dabei war ich in den Ferien und habe das Einschreiben erst zehn Tage später abgeholt, ab dann lief die Frist. Hatte also mehr Zeit als gedacht und konnte in Ruhe das Erstreckungsbegehren machen.
Genau so, Corina. Massgebend ist der Zugang, nicht das Briefdatum. Gut, hast du es vor Ablauf eingereicht, und merci fürs Teilen, das hilft anderen mit dem gleichen Irrtum.
Wir hatten echten Eigenbedarf gegen uns, da war nichts zu machen mit Anfechten. Aber die Erstreckung hat funktioniert: Mit zwei schulpflichtigen Kindern bekamen wir an der Schlichtung anderthalb Jahre zugesprochen. Diese Zeit war Gold wert, um in Ruhe etwas zu finden. Und gekostet hat das Verfahren nichts.
Stark, Driton, und ein wichtiger Punkt: Auch wenn die Anfechtung chancenlos ist, lohnt sich fast immer das Erstreckungsbegehren. Schulpflichtige Kinder sind ein klassischer Härtegrund. Danke fürs Mutmachen.
Mein Fehler, den ich hier wiederfinde: Ich wollte aus Protest die Miete nicht mehr zahlen. Zum Glück hat mich der Mieterverband gewarnt, das wäre ein Eigentor gewesen (ausserordentliche Kündigung wegen Zahlungsverzug). Also weiter gezahlt und parallel angefochten. Hat sich gelohnt.
ConvivaPlus Editorial
TemplatesResearched and verified. Facts, not opinions.
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