While it is not critical to have the title placed solely in the name of your mother, it is not expensive to update the records, and it may solve problems that could arise later. Your mother will need a certified copy of your father's death certificate. This means that the certificate will have an imprinted seal from the government office that issues such certificates. She will then have to record a document, called a confirmatory deed, in the office of the Recorder of Deeds in the jurisdiction where the property is located. Some local jurisdictions may require some additional documentation, such as an affidavit of exemption from tax.
Peace of mind is perhaps the most important factor.
Additionally, many years later, you may not have your father's death certificate and there may be delays in attempting to locate one quickly, should the need arise to sell or refinance the property. This entire site is copyrighted under Federal law. Do not reprint, distribute, or use any material on this site without prior written permission.