GermanyCan I Terminate My Lease Immediately for Health Risks?
Yes — if your apartment poses a serious, verifiable health hazard (e.g., mold, asbestos, toxic fumes), you may terminate immediately under BGB § 569(1), even if you knew about the issue when signing.
What the Law Says
German law allows tenants to end a residential lease without notice — i.e., immediately — if the apartment is so defective that using it seriously endangers their health. This right exists independently of whether the tenant knew about the danger at the start of the tenancy.
The key provision is BGB § 569(1), which explicitly states that a 'significant health hazard' in the rented dwelling constitutes a 'weighty reason' (wichtiger Grund) for extraordinary termination without notice. This applies even if the tenant was aware of the hazardous condition when signing the lease — or even waived related rights.
This rule supplements the general framework in BGB § 543, which defines a 'weighty reason' as one where continuing the tenancy until the regular notice period ends would be unreasonable, after weighing all circumstances — including fault and both parties’ interests.
Importantly, unlike many other grounds for immediate termination (e.g., rent arrears), no prior warning or grace period is required for health-related defects under § 569(1). The hazard must be objectively serious — not merely uncomfortable or annoying — and medically or technically verifiable (e.g., confirmed mold toxicity, carbon monoxide leaks, lead paint exposure, or unsafe electrical wiring).
Statutory TextEin wichtiger Grund im Sinne des § 543 Abs. 1 liegt für den Mieter auch vor, wenn der gemietete Wohnraum so beschaffen ist, dass seine Benutzung mit einer erheblichen Gefährdung der Gesundheit verbunden ist. Dies gilt auch, wenn der Mieter die Gefahr bringende Beschaffenheit bei Vertragsschluss gekannt oder darauf verzichtet hat, die ihm wegen dieser Beschaffenheit zustehenden Rechte geltend zu machen.
— BGB § 569(1) — German Civil Code
Statutory TextJede Vertragspartei kann das Mietverhältnis aus wichtigem Grund außerordentlich fristlos kündigen. Ein wichtiger Grund liegt vor, wenn dem Kündigenden unter Berücksichtigung aller Umstände des Einzelfalls, insbesondere eines Verschuldens der Vertragsparteien, und unter Abwägung der beiderseitigen Interessen die Fortsetzung des Mietverhältnisses bis zum Ablauf der Kündigungsfrist oder bis zur sonstigen Beendigung des Mietverhältnisses nicht zugemutet werden kann.
— BGB § 543(1) — German Civil Code
What Courts Have Said
While the BGH has not issued a ruling specifically on health hazards under § 569(1) in the provided case, its jurisprudence confirms that post-contractual environmental changes affecting habitability — like severe noise and dust — can constitute legally relevant defects. This supports the principle that objective, measurable deterioration impacting well-being triggers tenant rights.
The court held that increased noise and dust from neighboring construction — arising after lease signing — qualifies as a rental defect entitling the tenant to rent reduction, even absent any contractual promise about surrounding conditions. This affirms that habitability includes protection from objectively harmful environmental impacts.
What to Do
Document the hazard thoroughly: obtain expert reports (e.g., certified mold assessment, air quality test, or electrician’s safety report). Photos, videos, and medical notes strengthen your case.
Notify your landlord in writing (email + registered letter), citing BGB § 569(1), describing the hazard, and stating your intent to terminate immediately. Keep proof of delivery.
Move out by the date stated in your notice — typically effective immediately upon receipt by the landlord — and return keys promptly. Retain evidence of handover.
If the landlord disputes the termination, be prepared to defend it in court with your documentation; German courts routinely uphold terminations for verified health threats.
Sources
Related Questions
Same Question, Other Jurisdictions
CanadaNot legal advice. This article is general information based on publicly available sources, written for educational purposes. Laws change and individual situations vary. Consult a licensed attorney in your jurisdiction before acting on anything you read here. Last reviewed: June 2026.