We are going to get divorced and have a one year old. Own marital home jointly. It is worth about 600k and about 400k is outstanding on the mortgage. Mortgage is 1500 a month and I can afford to pay it on my own. I want to keep the house. When they say I have to "buy him out" what does that really mean? Do I have to pay him £300k worth or just split the equity with him?