Garage conversion rules in Gladstone, MO — sometimes called garage-to-ADU or accessory living unit conversions — govern permits, ceiling height, egress, and parking replacement.
Converting a garage into living space in unincorporated Clay County requires a building permit and must meet habitable-space standards under the adopted International Residential Code. As a first-class county, Clay County is empowered to require the permit and inspections.
A garage conversion in unincorporated Clay County needs a building permit from the Building Division and must bring the space up to habitable standards under the adopted International Residential Code: minimum ceiling height, egress windows, insulation, heating, ventilation, and permitted electrical and plumbing work. Missouri has no statute easing garage conversions, and as a first-classification county Clay County is empowered to regulate the work and require inspections. If the conversion creates a separate dwelling, county zoning under Title XV and any deed restrictions apply, and added plumbing on a septic system must not overload it.
An unpermitted conversion draws code enforcement and must be brought to code or restored to a garage. Un-inspected electrical or plumbing must be opened up and corrected.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
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See how Gladstone's garage conversions rules stack up against other locations.
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