In the absence of any other answers this is not an expert answer. Firstly I believe exemption from care fees only applies if your spouse is living in the house. Secondly, if you become sole owner, I looks like your mother has 'gifted' her share to you. Techincally the social services could say this was done to avoid care home fees and claim the house anyway. Thirdly, lenders are unlikely to give you a sole mortgage if someone else's name is on the deeds. They would want to be sure no-one else has an interest in the property. I assume her half is less that the nil rate band for inheritance tax (�300000) so inheritance tax would not apply if she gifted it to you outright, (ie have your motheres name removed from the deeds) but care fees might still be claimed for up to seven years..