Wills And Estate Law How Long Can A House In NSW Stay In A Deceased Estate? Father In Law Has Left House In Estate For 30+ Years!?

How long can a house in NSW stay in a deceased estate? Father in law has left house in estate for 30+ years!? - wills and estate law

They wonder whether or not (my father is 67 years) are not the property of the family home on the estate of his grandmother died (1973) could lead to legal problems in the future. I am not satisfied with the owner, not full of my stepfather ... But he has a little phobia about the formalities? I would appreciate thoughts from people familiar with Australia (NSW), the law, since I am a New Zealander. Thank you.