DjV - have you seen a lawyer. I can't remember if you mentioned it. If not, book an appointment now. You are putting yourself into a spin trying to work out what he wants to do. Find out now what he is entitled to under a variety of scenarios (you have full custody, 50% custody and so on). If it is the children's home then you might be able to come to an agreement whereby you keep it until the children are 18 - and then when its sold you share the equity in it in accordance with some agreed ratio.