As a Texas divorce attorney, I would advise that in order to establish sole ownership of a property located in another state, it is recommended to obtain a post-nuptial agreement with your spouse before making the purchase. The post-nuptial agreement should clearly state that the property is being purchased with your own funds and that the loan is solely in your name. Additionally, all legal documentation regarding the purchase should reflect this. It is important to consider the laws of both Texas and the state where the property is located when it comes to marital property and ensuring that the property is not considered community property in the event of a divorce. Seeking the advice of a local attorney in the state where the property is located can provide further guidance on establishing sole ownership.