Missouri Implied Warranty of Habitability and Repair-and-Deduct

441.234. Tenant may deduct cost of repair of rental premises from rent, when — limitations. — 1. The provisions of this section shall apply only to a tenant who has lawfully resided on the rental premises for six consecutive months, has paid all rent and charges due the landlord during that time, and did not during that time receive any written notice from the landlord of any violation of any lease provision or house rule, which violation was not subsequently cured. 2. If there exists a condition on residential premises which detrimentally affects the habitability, sanitation or security of the premises, and the condition constitutes a violation of a local municipal housing or building code, and the reasonable cost to correct the condition is less than three hundred dollars, or one-half of the periodic rent, whichever is greater, provided that the cost may not exceed one month's rent, the tenant may notify the landlord of the tenant's intention to correct the condition at the landlord's expense. If the landlord fails to correct the condition within fourteen days after being notified by the tenant in writing or as promptly as required in case of an emergency, the tenant may cause the work to be done in a workmanlike manner and, after submitting to the landlord an itemized statement, including receipts, deduct from the rent the actual and reasonable cost of the work, as documented by the receipts, not exceeding the amount specified in this subsection;