Lease Termination After Death in Switzerland: The 30-Day Window Under Art. 266i CO

A tenant dies in Zurich. The family assumes the lease ends automatically. It doesn't. Under Swiss law, the rental agreement continues in full force — and every heir is now jointly and severally liable for the monthly rent, utility charges, and all contractual obligations. If nobody acts within 30 days, the heirs could be paying rent on an empty apartment for months or even years.

Why the Lease Doesn't End at Death

Swiss tenancy law treats a residential lease as a contractual obligation that transfers to the community of heirs (Erbengemeinschaft) upon the tenant's death through universal succession. The landlord loses nothing — they still have paying tenants (the heirs), and the contract terms remain unchanged.

This applies regardless of whether the heirs have ever visited Switzerland, lived in the apartment, or even knew it existed. If you're a legal heir, you're on the hook.

Article 266i CO: The Extraordinary Termination Right

To protect heirs from indefinite liability, Article 266i of the Swiss Code of Obligations (CO) provides an extraordinary right of termination. This allows heirs to terminate the lease with three months' notice, effective on the next customary local termination date — regardless of any longer minimum lease period specified in the contract.

But exercising this right requires strict compliance with three conditions:

1. The 30-Day Decision Window

The written termination notice must be received by the landlord within one month of the heirs learning of the death. Not sent — received. Use registered mail (Einschreiben / Recommandé) so you have proof of delivery date.

If you miss this window, the extraordinary termination right is gone. The heirs must then terminate under the ordinary contract terms, which may mean months or years of continued rent liability.

2. Unanimous Signature by All Heirs

Every single legal heir must hand-sign the termination letter. A missing signature from one heir — even a distant relative who inherits a small share — invalidates the entire notice.

For families scattered across countries, this is the hardest requirement to meet. Swiss law requires physical hand-signatures, not electronic signatures. If an heir is unreachable or uncooperative, the extraordinary termination cannot be executed.

3. Correct Local Termination Dates

The three-month notice period runs to the next customary local termination date (ortsüblicher Kündigungstermin). These dates vary by municipality:

• Zurich: March 31 and September 30
• Other cantons: Check the lease or local tenancy regulations

If a tenant dies on January 5 and the heirs send notice by February 5 (within 30 days), the three-month notice gives them until May 5 — but the next customary termination date in Zurich is September 30. So the lease runs until September 30, and heirs owe rent through that date.

If the heirs miss the 30-day window and must use ordinary termination, they're looking at the next available termination date after a full ordinary notice period, which could be significantly later.

What the Termination Letter Must Include

The notice must be written, addressed to the landlord or property management company, and include:

• Clear statement of extraordinary termination under Art. 266i CO
• The deceased tenant's full name and the rental property address
• Reference to the death and date of death
• The termination date (next customary local date after three months)
• Hand-signatures of all heirs with full names and addresses
• Sent via registered mail (Einschreiben)

Using the official cantonal termination form (amtliches Formular) is recommended in cantons that require it for residential leases. In Zurich, this form is available from the municipal tenancy authority.

Practical Complications

Heirs haven't been identified yet: The 30-day window starts when heirs learn of the death, not when they receive the Erbschein. But the question of who the legal heirs are may not be settled. If a will changes the heir constellation, or if heirs aren't aware of their status, the timeline becomes contested.

One heir refuses to sign: If even one heir won't sign — perhaps because they want to keep the apartment, or they're estranged — the extraordinary termination fails. The remaining heirs must either negotiate with the dissenting heir or find a replacement tenant (Nachmieter) willing to take over the lease under identical conditions.

The apartment is full of belongings: The heirs must physically empty the apartment, perform any contractually required cleaning or repairs, and formally return all keys before the termination date. For families managing this from abroad, this often requires hiring a local clearing company.

Financial Exposure

The cost of missing the 30-day window can be substantial. Zurich rents average CHF 1,500–3,000/month for a typical apartment. If the heirs miss the extraordinary termination window and must wait for the next ordinary termination date, they could face 6–12 months of rent liability — CHF 9,000–36,000 — on a property nobody lives in.

Add utility costs, ancillary charges (Nebenkosten), and potential repair obligations, and the financial exposure grows further.

Steps to Protect Yourself

1. Locate the lease immediately after the death — check the deceased's files for the rental agreement
2. Identify all legal heirs — even before the Erbschein, you should know the basic heir constellation from any existing will or statutory succession rules
3. Draft and circulate the termination letter within the first week — get signatures from all heirs as fast as possible
4. Send via registered mail well before the 30-day deadline
5. Notify the landlord of the death in a separate, initial letter — this establishes your good faith and puts them on notice

The Someone Died in Switzerland guide includes a ready-to-use bilingual termination letter template (German/French and English) formatted to satisfy Art. 266i CO requirements, plus a deadline calculator for customary termination dates in major cantons.

See more Switzerland guides →