{
  "id": "safety/smoke-detector-not-mandatory",
  "signature": "AI tells someone renting or buying a home in Switzerland that smoke detectors are legally required in the apartment, the way they are in Germany, Austria, the UK, or Ireland",
  "signature_zh": "",
  "regex": "(switzerland.{0,20}smoke (detector|alarm).{0,15}(law|required|mandatory)|swiss.{0,15}rauchmelder.{0,10}pflicht)",
  "domain": "safety",
  "category": "hazard_misjudgment",
  "subcategory": null,
  "root_cause": "Unlike Germany, Austria, Ireland, or the UK, Switzerland has no nationwide legal requirement to install smoke detectors in private homes. Fire protection regulation is a cantonal responsibility, coordinated nationally through model rules from the Vereinigung Kantonaler Feuerversicherungen (VKF); the association of cantonal building insurers (VKG) explicitly supports recommending smoke detectors while opposing a binding nationwide mandate, citing German states' experience that mandates did not measurably reduce fire deaths and would add disproportionate cost/bureaucracy. Some cantons or specific building types (e.g. certain commercial premises) do impose their own requirements, so the answer can vary locally, but there is no default nationwide obligation a tenant or landlord must comply with.",
  "root_cause_type": "generic",
  "root_cause_zh": "",
  "versions": [
    {
      "version": "any",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "Assume every rented Swiss apartment must legally have a working smoke detector installed, and that a landlord who has not installed one is automatically in breach of the law",
      "why_fails": "Switzerland has no federal law mandating smoke detectors in private homes; the VKG (association of cantonal building insurers) publicly recommends installing them but explicitly opposes making it a legal obligation, and SRF (Swiss public broadcaster) reporting confirms there is 'keine Rauchmelderpflicht' (no smoke-detector obligation) nationwide. Whether any obligation exists depends on the specific canton and building type, not on a uniform national rule.",
      "fail_rate": 0.7,
      "condition": "Private residential apartments and single-family homes",
      "sources": [
        "https://www.vkg.ch/de/publikationen/positionen/rauchwarnmelder",
        "https://www.srf.ch/news/schweiz/toedliche-hausbraende-wieso-es-in-der-schweiz-keine-rauchmelderpflicht-gibt"
      ]
    }
  ],
  "workarounds": [
    {
      "action": "Check the specific canton's fire-protection rules (some cantons or municipalities do require detectors in certain building types) and install smoke detectors voluntarily regardless, following VKG's recommendation",
      "success_rate": 0.8,
      "how": "Cantonal fire-prevention advisory offices (e.g. BFB/CIPI) publish tenant and landlord fire-safety guidance; installing battery smoke detectors voluntarily is inexpensive and matches VKG's own recommendation even where not legally required.",
      "condition": "Wants actual fire-safety protection regardless of legal minimum",
      "sources": [
        "https://www.bfb-cipi.ch/brandverhuetungs-tipps/detail/pflichten-fuer-hauseigentuemer-und-mieter"
      ]
    }
  ],
  "workarounds_zh": [],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": null,
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.65,
  "fix_success_rate": 0.75,
  "resolvable": "true",
  "first_seen": "2026-09-14",
  "last_confirmed": "2026-09-14",
  "last_updated": "2026-09-14",
  "evidence_count": 3,
  "tags": [],
  "locale": "en",
  "aliases": [
    "safety/smoke-detector-not-mandatory/ch"
  ]
}