KCMO convert non-conforming room to a bedroom

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the property I’m interested in buying has a 8x9 room with very large windows on the main floor .  Based on the Jackson County’a building code, I believe it meets all the requirements of a bedroom except for the closet requirement.   the room is 72 sqft so I won’t be able to build a closet on the ground (otherwise it won’t be 70 sqft)… if I mount a closet on the wall, would it meet the requirement of a bedroom I.e. would the County change the public record?