1. Assuming that your father died intestate (without executing WILL), then your deceased father's property devolves equally to your mother, you and your deceased sister's minor sister.

2.  Based on your deceased father's and your deceased sister's death certificates, legal heirship certificate/Family/Genealogical Tree, property documents, Patta, etc., of the property, apply to the jurisdictional Corporation/Municipality/Revenue Office for transferring/mutating your deceased father's property in your mother, you and your deceased sister's minor daughter's name.

On father demise intestate apply for mutation of property in name of legal heirs 

enclose father death certificate ,latest receipt of payment of property taxes 

3) since father died intestate apply for and obtain letters of administration from district court 

Act as mentioned herein above 

If your sister is entitled to a share in your father's property then upon her death her own class I legal heirs namely her husband and minor daughter shall be entitled to her share in the property.

In the mutation application their names as legal heirs of the deceased heir has to be included so that their names appear in the revenue records of the property.

Your deceased sister is entitled to a share out of your deceased father's property who shall devolve on her own class I legal heirs consisting her husband and her minor child(ren)

Dear client I'm sorry to hear that what in this case of your sister is eligible for the property

- As per law, after the demise of your father without leaving any Will etc., his property would be devolved upon all his legal heirs equally i.e. your sister, mother and you will get 1/3rd share in the property. 

- Further, as your sister is expired then her 1/3rd share can be claimed by her legal heirs equally i.e. her husband and minor daughter. 

- You can apply for mutation of the property in the name of all legal heirs after submitting the death certificates of father and sister and other documentary proofs. 

Hi,

Since your father died intestate (i.e without making any WILL) you need to apply for Letter of Administration in High Court.

After getting the Letter of Administration, please apply for mutation of property.

For better understanding you may consult any lawyer from your state

Regards,

family partition deed or settlement deed will do in this case