i don't know about the law in your country but in the us it depends on the state. generally it will defer to a will or trust and the instructions there. he could choose to leave you the house, or a % of money, or a % of the estate etc.  you being the executor doesn't mean you can just dispose of the estate in any way you want, you have to manage it in accordance with whats laid out in it. i.e. you can't just leave the house to yourself if he said leave it to his new wife.  when my father died before my grandfather my grandfather changed his trust to skip my mom and go directly to my brothers and i, you can do that. when my mom setup her trust she set it up so if i die it skips my wife and goes to my son. you can setup these things however you want for the most part. i'm working on my own trust now with a lawyer and in my state if i die i have to leave at least 30% to her. however if i get divorced my assets would go directly to my son and cut her out because all of my property and investments of note are non-marital as i had them prior to getting married and/or they were inherited.
United States