Transfer of property after death of head of the family

Sir My father has immovable property (house)in Gujarat. But we are living in Delhi form two decades. My father is expired In my family there are my mother, three sisters and I(son) I want to transfer my father's Gujarat property in the name of me and my mother. What would be the procedure for that? And which type of certified will be required surviving members certificate or legal heir certificate? And my three sisters have no objection in the transfer of property in the name of me and my mother. At what time NOC will be required from three sisters What should I do first ? Please explain the procedure for transfer.