Louisiana distinguishes community property from a spouse's separate property. Property acquired during the community-property regime is generally presumed to be community property, but that presumption can be rebutted. The deed is a useful starting point; it may not answer every ownership question by itself.
While the community-property regime is in place, both spouses generally must agree before community real estate is sold. A judgment of divorce ends that regime. Former community property that has not been partitioned remains co-owned until it is divided, so the divorce itself does not tell you who can sign for every house.
The deed, divorce judgment, any partition papers, and any other order about the house need to be reviewed together. A Louisiana family-law attorney can explain what an agreement or court order means for your situation; the title company reviews the records and closing documents to confirm what the sale requires.