I am concerned when I see this:
A spouse that is not listed on a deed to a Missouri homestead must sign the deed to validly transfer the property. In other words, neither spouse can sell the marital homestead without the other spouse joining in the deed—even if only one spouse officially owns the property.
So, the "non-owning" spouse would have to execute a beneficiary deed along with the "owning" spouse.
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The property in question is being purchased with the proceeds of an inheritance, and in Missouri you can keep an inheritance from being marital property if you properly account for it.