If you are not on the deed or title already (that is, not currently owners), you have no say in what happens to the property UNLESS your father is so cognitively impaired that you can have a court declare him incompetent and appoint a legal guardian to manage his affairs for him; the guardian (who will most likely be one of his children) can then manage his property. If you believe he is that cognitively impaired and want to explore this option, consult with an elder or family law attorney.If he is still mentally competent, however, then, as stated, non-property owners, even children, have NO say in what he does, or does not do, with his property.