property transfer to son & daughter in case of both father and mother are deceased

You have to obtain legal heirshp certificate. After that you can transfer your share in property to your sister. Heir advocate.

It is believed that you are all Hindu.

Confirm!

In case of Hindu male the 1st right is of ClassI legal heirs i.e; Mother (If alive as on date of death), Wife (If alive as on date of death), sons, daughters......... 

If mother of father also predeceased your father then you and your sister are surviving legal heirs.

Apparently; it is simple matter of inheritance: ‘Intestate Succession’.  

The process and procedure and forms might also be available on website of O/o Authority under whose property falls e.g; MC…. Or it is certainly available in O/o Authority…………   Generically speaking: The certified copy of death certificate, legal heir certificate is basic requisites……………. The O/o Authority may transfer ownership in the name of Legal heirs.    

Obtain mutation record with all link docs It should have all docs that you need and require. .

Submit all docs as suggested above and get mutation records after updation………………

Thereafter you can dispose your share by a valid/registered deed in favor of your sister e.g; release/relinquishment/gift/settlement/transfer/sale deed……… 

O/o Tehsildar issues it, and after inquiry by revenue officials.

Check locally.

You may relinguish your right in favour of your sister.

Local senior counsel of unshakable repute and integrity specializing in revenue matters having successful record can handle the matter and even a senior and honest deed writer can draft the suitable the deed for you…….

For simple and relevant meanings Search in dictionary, legal dictionary………

Relinquishment ; त्याग; To give up.

Transfer; in its sense as matter posted by you….

Relinquishment deed: legal document/instrument where a person legally or formally gives up or releases his legal rights of the said property being relinquished in the name of some other person

You may go thru:

TRANSFER OF PROPERTY ACT,1882;46,53A

https://dolr.nic.in/Acts&Rules%5CTransferOfPropertyAct%281882%29.htm

REGISTRATION ACT, 1908

2. Definitions; (6) "immovable property" includes land, buildings, hereditary allowances, rights to ways, lights, ferries, fisheries or any other benefit to arise out of land, and things attached to the earth or permanently fastened to anything which is attached to the earth, but not standing timber, growing crops nor grass;

17. Documents of which registration is compulsory

https://dolr.nic.in/Acts&Rules/RegistrationAct%281908%29.htm

Register the deed.....and as metioned above local counsels can help you....

Check the duty/charges on various options from SRO...............

These may also be available on website of aurthority..........