Accessory Structures in Columbia, MO (2026)
5 verified accessory structures rules for Columbia, Missouri, sourced directly from the municipal code and official government pages.
Verified from official government sources
ADU Rules
Columbia regulates accessory dwelling units through zoning. Missouri has no statewide ADU mandate. Rules vary by city. Dillon’s Rule limits non-charter cities.
Columbia ADU / Accessory Dwelling Rules
Some RestrictionsShed Rules
Columbia allows small sheds without permits (typically under 120 to 200 sq ft). Larger structures need building permits. Setback requirements apply.
Columbia Shed & Outbuilding Rules
Few RestrictionsGarage Conversions
Columbia may allow garage conversions with permits. Missouri has no statewide mandate. Replacement parking typically required.
Columbia Garage Conversion Rules
Some RestrictionsCarport Rules
Columbia requires permits for carport construction. Setback requirements, height limits, and lot coverage maximums apply.
Columbia Carport Construction Rules
Some RestrictionsTiny Homes
Columbia regulates tiny homes differently based on whether they are on a permanent foundation or on wheels. Zoning and minimum square footage requirements apply.
Columbia Tiny Home & Small Dwelling Rules
Some RestrictionsLooking for Boone County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Columbia city rules.
Accessory Structures in Boone County →