Accessory Structures in Kirkwood, MO (2026)
3 verified accessory structures rules for Kirkwood, Missouri, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Kirkwood passed ADU-permitting zoning changes in 2021 under Chapter 25 (§25-45(b)). Minimum lot size is 15,000 sq ft. Detached ADUs must reflect the architectural style of the principal dwelling and meet principal building setback requirements. ADU accessory structures must not include cooking facilities, sleeping area, or bathing unless approved as an ADU.
Kirkwood ADU / Accessory Dwelling Rules
Some RestrictionsShed Rules
Sheds in Kirkwood are accessory structures regulated under Chapter 25, Article V (Accessory Uses and Structures). They must be set back at least five feet from all lot lines, stay at least 10 feet from the principal building, and the total of all accessory structures may not exceed 7% of lot area or 1,500 square feet, whichever is less; sheds larger than 120 square feet or taller than 12 feet are major accessory structures requiring Architectural Review Board approval.
Shed Rules in Kirkwood
Some RestrictionsGarage Conversions
Converting a garage to living space in Kirkwood requires a building permit and zoning compliance. Must comply with 2015 ICC residential standards. Required off-street parking must be maintained. ADU rules apply if kitchen/sleeping area is added (§25-45(b)).
Kirkwood Garage Conversion Rules
Some RestrictionsLooking for St. Louis County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Kirkwood city rules.
Accessory Structures in St. Louis County →