My partner's old flat is let out now we live together, and not very saleable. To change the mortgage to buy to let, her earnings need to be assessed and are not sufficient to get a mortgage offer. This is ok, because I am happy to share financial responsibility, but it seems to get the mortgage my name needs to be on the deeds. So, I would like to buy a 1% share. Surely this doesn't need a solicitor? Where do we start with DIY conveyancing on this?