ADU rules in Kansas City, MO — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
Kansas City allows accessory dwelling units (ADUs) in some residential zones under the 2011 Unified Development Code (Chapter 88). ADU regulations specify minimum lot size, owner-occupancy, and design standards.
KCMO Zoning and Development Code Chapter 88 (adopted 2011) permits accessory dwelling units in certain residential zones as accessory uses. ADUs may be attached to the main dwelling, within an existing structure (basement/garage conversion), or detached. Requirements typically include: minimum lot size, the primary residence must be owner-occupied, the ADU may not exceed a certain percentage of the main dwelling's floor area, and design standards to maintain residential character. Building permits are required. Missouri has no statewide ADU mandate; Kansas City retains full local control.
Unpermitted ADUs subject to stop-work orders and fines; may require removal if not brought into compliance.
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Side-by-side rule comparisons with other cities in Jackson County.
See how other cities in Jackson County handle adu rules.
See how Kansas City's adu rules rules stack up against other locations.
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