Is really a good idea? The house is currently disregarded from any financial assessment due to your mother living in it. As soon as it's sold the money will make him self-funding, and due to deprivation of assets ruled it cannot simply be gifted to your mother.
The house can be sold and a new one purchased for the mother to live in, selling the house and moving isn't a deprivation of assets, see the link below to the Mandatory Guidance notes to the 2014 Care Act where it examples in Annex E, section 10:
"At the time the property is sold, Max’s 50% share of the proceeds could be taken into account in the financial assessment, but, in order to ensure that David is able to purchase the smaller property, Max makes part of his share of the proceeds from the sale available.
In such circumstance, it would not be reasonable to treat Max as having deprived himself of capital in order to reduce his care home charges." and the LA have already agreed to this happening anyway so they're obviously happy that although the house is in dad's name the mother has equal rights over the property.
The issue is the ownership of the new house, put it in mum's name and she's benefitted financially as an LPA, even if you put it in joint names it could be argued that she is still benefitting although the LA have also agreed that she can keep half of any equity released so although there is no joint ownership the LA seem to be treating it although there is which is only right and proper as this old thing about only the man's name being on the deeds of a house is a historic injustice because that's how they did things in the old days.
Using the capital to buy a new house isn't gifting anything nor (according to the LA) is her keeping half of any equity released, the issue of gifting only arises if her name goes onto the deeds of the new house as far as I can see, then she has something she didn't previously have so has benefitted which is the issue.
K
https://www.gov.uk/government/publi...ce/care-and-support-statutory-guidance#AnnexE