Hi, thank you for your question. Just a bit more information required to fully assist you:
-Are/were they married?
-Did they have any formal agreements in place regarding the property or deeds of trust?
-Is the title also in joint names?
Thanks for confirming. Legally she is not allowed to change the locks without a court order. He has a legal interest which entitles him to occupy the property and also obtain a share of the proceeds of sale (or for him to be bought out for his share). His share of the property is in accordance with his share of the title. If no agreement can be reached between them regarding a sale or appropriate buy out, then he can pursue a court order for a sale of the property.
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