Susannah - I'm sorry to read of your loss and the difficult circumstances also. Legal/beneficial ownership, loss of mental capacity and what the legal position is is very complex and I would recommend seeking legal advice. I can't advise you on the law and all I can really do is signpost some guidance that may help in considering what options, if any, you have re the registered property/the legal ownership which is what we register.<br> Firstly
check and confirm the registered information - I'm assuming that the property was in their joint names but it's best to check and to also confirm what restrictions and other interests already exist<br> <a href="https://www.gov.uk/government/publications/private-trusts-of-land">PG 24 section 8.5 </a>and <a href="https://www.gov.uk/government/publications/notices-restrictions-and-the-protection-of-third-party-interests-in-the-register">PG 19 section 6.26</a> may be helpful if relevant to the circumstances<br> Our <a href="https://www.gov.uk/guidance/property-alert">Property Alert service</a> can be used to notify you if a significant application is submitted to update the register - you refer to her signing documents but not whether your brother has then applied to update the register