St. Peters, MO Rental Property Rules: Repairs & Habitability (2026)

Section 525.010 adopts the 2021 International Property Maintenance Code, and Section 525.040 locally amends it. Amendment 602.3, Heat Supply, requires every owner and operator of a rental building who furnishes heat to occupants, whether by express or implied lease terms, to supply enough heat from September 1 to May 1 to keep habitable rooms, bathrooms, and toilet rooms at a minimum of 68°F. Amendment 602.4, Occupiable Work Spaces, requires a minimum 65°F during the same heating season in indoor occupiable work spaces while they are in use, except processing or storage areas needing special temperatures and spaces where occupants engage in vigorous physical activity.

Amendment 404.5, Overcrowding, bars a dwelling unit from being occupied by enough people to create conditions endangering the life, health, safety, or welfare of the occupants. Other rental-relevant amendments in the same chapter require accessory structures such as fences and detached garages to be kept structurally sound and free of holes or rot (302.7), exterior walls kept weatherproof and free of deterioration (304.6), and screens of at least sixteen mesh per inch on openings serving food-related areas, with self-closing swinging doors (304.14). The Health and Code Enforcement Manager, as Code Official under Section 525.030, enforces these standards, and tenants or the City can act on a failure to supply required heat as a code violation.