I've been married to my 2nd husband for 7 years now. He has 4 kids from a previous marriage and I have 1 from previous marriage. We've both always lived in my house which I bought in my name and solely pay the mortgage for. He rents out his house and he pays the mortgage on his. He gives me money to cover some of bills and food but other than that our finances are separate.
We want to buy a house together once both our mortgages are paid off and but I want to make sure that all my part of the equity in the new house will go to my son and not split with his kids, will I need to state this in a will?