What a landlord must fix, and your options when they do not
This page covers the landlord's duty to maintain a habitable home in Missouri, and what you can do when repairs go unmade.
It does not cover commercial leases, or conditions you caused yourself (which are treated differently).
密苏里适居性由普通法 implied warranty of habitability 确立（Detling v. Edelbrock, 671 S.W.2d 265, Mo. banc 1984）：每份住宅租约默示承诺，房屋在租期起始时及整个租期内 fit for human habitation。
密苏里未采纳 URLTA，无成文适居性义务清单。该 warranty 要求房东提供对生命、健康、安全至关重要的设施与服务（供热、水电、结构安全、防霉等）。
Detling v. Edelbrock, 671 S.W.2d 265 (Mo. banc 1984) ↗密苏里无成文修复期限；房东须在「合理时间」内修复（按缺陷严重度而定）。
URLTA 州通常规定 14/30 天修复期，密苏里无此明文。租客书面通知可建立时间记录，但法定起算以「合理时间」为准。
Detling v. Edelbrock (common law reasonableness) ↗Repair-and-deduct（441.234）：满足条件的租客可自行维修并扣租——住满 6 个月、付清租金、未收未纠正违规通知；缺陷影响适居/卫生/安全且违反地方法规，成本 < $300 或半月租（取较大，≤1 个月租金）。
书面通知房东意图后，房东 14 天不修（紧急则尽快），租客可 workmanlike 施工并凭收据扣租。房东 14 天内书面异议的，须先取得市政书面认证。12 个月内累计扣租 ≤1 个月租金。
Mo. Rev. Stat. § 441.234 ↗终止租约（constructive eviction）或起诉主张损害赔偿 / 租金减免。
严重缺陷使房屋无法居住的，租客可主张 constructive eviction 终止租约，或起诉追偿损害、请求租金减免。
Detling v. Edelbrock (common law remedies) ↗密苏里房东进入须合理通知并在合理时间，紧急情况除外。
无明文进入天数，以合理标准为准。
Mo. Rev. Stat. (reasonableness, common law) ↗缺陷系租客、其家人或经租客同意的他人故意或过失造成的，租客不得 repair-and-deduct（441.234(3)）。
Mo. Rev. Stat. § 441.234(3) ↗密苏里无成文举证责任规定；适居性 breach 由租客主张并证明缺陷影响适居。
Detling v. Edelbrock (common law) ↗Every figure on this page comes from the official text or a state court opinion, not from a summary. The table below lists each provision used and the date it was last checked.
| Statute | Last verified | Source |
|---|---|---|
| Detling v. Edelbrock, 671 S.W.2d 265 (Mo. banc 1984) | 2026-10-16 | official text ↗ |
| Detling v. Edelbrock (common law reasonableness) | 2026-10-16 | official text ↗ |
| Mo. Rev. Stat. § 441.234 | 2026-10-16 | official text ↗ |
| Detling v. Edelbrock (common law remedies) | 2026-10-16 | official text ↗ |
| Mo. Rev. Stat. (reasonableness, common law) | 2026-10-16 | official text ↗ |
| Mo. Rev. Stat. § 441.234(3) | 2026-10-16 | official text ↗ |
| Detling v. Edelbrock (common law) | 2026-10-16 | official text ↗ |
Where the official text and a secondary summary disagree, this page follows the official text and says so. Where a provision admits of more than one reading, that is flagged rather than smoothed over.
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密苏里适居性由普通法 implied warranty of habitability 确立（Detling v. Edelbrock, 671 S.W.2d 265, Mo. banc 1984）：每份住宅租约默示承诺，房屋在租期起始时及整个租期内 fit for human habitation。
Repair-and-deduct（441.234）：满足条件的租客可自行维修并扣租——住满 6 个月、付清租金、未收未纠正违规通知；缺陷影响适居/卫生/安全且违反地方法规，成本 < $300 或半月租（取较大，≤1 个月租金）。 终止租约（constructive eviction）或起诉主张损害赔偿 / 租金减免。