A friend of mine is looking to remortgage his house to release 70k equity on it in order to fund an extension. The mortgage outstanding is 250k - house is worth 400k. He is having difficulty in releasing the equity because his income is quite low. He looked at getting his parents as a guarantor but none of the financial institutions would allow this. He is now thinking of adding the parents to the title deeds and not charging them anything for this. With them on the title deeds he believes that he would easily get the equity released. Now I think there may be stamp duty implications here even though they are paying nothing. I am not absolutely sure about this however...Can anyone suggest what the best way to proceed is?