1. At present in whose name is the Khata of the property details recorded in the BBMP?.
2. Has the property been mutated in the name of your grand father and/or your father in the municipal records.
3. Whether your father's sisters have executed a Release/Relinquishment deed in favour of your father/grand father?.
4. If the property is not partitioned earlier and has been carried over intact till the 4th generation, then only the rights accrue for the great grand children.
5. If it is a self-acquired property of your father, then his children will not have any right over the property.
6. If it is a self-acquired property of your father, then it is his wish & will to either retain the property or to dispose off the property in any way, as per his sweet will.
7. To get the property transferred to you people, please let me know in whose name the property stands at present.