Accessory Structures in Lee's Summit, MO (2026)
5 verified accessory structures rules for Lee's Summit, Missouri, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Lee's Summit expressly allows accessory dwelling units in most residential districts. An ADU cannot exceed 500 square feet or 50 percent of the main home's floor area, whichever is less, and cannot push impervious lot coverage above 60 percent.
Lee's Summit Accessory Dwelling Unit (ADU) Rules
Some RestrictionsShed Rules
Lee's Summit requires a building permit for detached accessory structures over 120 square feet, and sheds cannot exceed 250 square feet. Structures over 120 square feet must sit on a permanent 12-inch-deep footing.
Lee's Summit Shed & Accessory Structure Rules
Some RestrictionsCity of Lee's Summit, Development Services — Residential Building Permits (Detached Accessory Structures)
Proposed shed structures cannot exceed 250 square feet.
Garage Conversions
Lee's Summit allows garage conversions with a building permit, but the converted space must meet the adopted 2018 residential code for habitable rooms and the home must keep its required off-street parking.
Lee's Summit Garage Conversion Rules
Some RestrictionsCarport Rules
Lee's Summit treats carports as accessory structures. A building permit is required for detached accessory structures over 120 square feet, and Unified Development Ordinance setbacks and lot-coverage limits apply.
Lee's Summit Carport Rules
Some RestrictionsTiny Homes
Lee's Summit regulates tiny homes by construction type. A foundation-built tiny house must meet the adopted 2018 residential code, and a backyard tiny home is limited by the city's 500-square-foot ADU cap.
Lee's Summit Tiny Home Rules
Some RestrictionsLooking for Jackson County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Lee's Summit city rules.
Accessory Structures in Jackson County →