Jefferson County, MO Building Safety: Childcare Center Rules (2026)

2 to define which day care operations must be built and permitted as Group E occupancies, the same classification used for elementary and secondary schools. 390(A)(20), a building or portion of a building counts as Group E, day care facilities, when it is occupied by more than ten children older than two and one-half years of age who receive educational, supervision, or personal-care services for fewer than twenty-four hours a day. Falling into Group E carries real construction consequences: the space must meet the IBC's occupancy-specific requirements for means of egress capacity, fire-rated corridor and stair separation, interior finish flame-spread ratings, and accessibility that apply to schools rather than the lighter provisions that cover small in-home day cares serving ten or fewer children.

A facility that starts at or below the ten-child threshold and later grows past it must be reclassified and brought up to Group E standards before it can legally operate above that count. 390, the same chapter that governs permits, inspections, and violations for every commercial building in the county, a day care operator who is unsure whether a planned enrollment or age mix trips the Group E threshold should confirm the classification with the Code Official before finishing construction drawings, since the permit review will not proceed under the correct set of standards otherwise.