Section 123 of the Transfer of Property Act, 1882 reads as follows: “For the purpose of making a gift of immoveable property, the transfer must be effected by a registered instrument signed by or on behalf of the donor, and attested by at least two witnesses. For the purpose of making a gift of moveable property, the transfer may be effected either by a registered instrument signed as aforesaid or by delivery. Such delivery may be made in the same way as goods sold may be delivered.”
Your sister may either execute a gift deed, gifting the said property to you or execute a special or specific PoA in favour of her relative or any other person, specifically granting the power to him/her or such other person to gift the property to you and to execute the applicable documents and admit and lodge the same for registration to give effect to the gift of the property in question. It may be noted here that a general PoA will not be sufficient and the attorney will not have the requisite power to execute a valid gift deed of such property.
A PoA that grants to the attorney the power to gift immovable property to a particular person must be registered.
As you are settled abroad and won't be able to visit India in the near future, you may execute a POA from the country of your domicile through the Indian Embassy/ Consulate. There are two ways to execute a POA from abroad:
Legalisation: In this case, signatures of the notary or judge before whom the POA is executed are required to be authenticated by the duly accredited representative of the Indian Embassy/Consulate. According to Section 3 of the Diplomatic and Consular Officers (Oaths and Fees) Act, 1948, notarising a deed from an authorised officer of the Indian Consulate/Embassy would be considered a valid notary. Such a POA is not required to be stamped at the time of execution. However, it needs to be stamped within three months from the date of receipt of the POA in India. Stamp duty would be payable according to Section 2(17) read with Schedule-I of the Indian Stamp Act, 1899, when the deed is presented for registration in India.
Apostalisation: The deed of POA executed outside India are proven through an apostallisation process which is governed by the Hague Convention, 1961. Also known as superlegalisation, apostille is a certificate which confirms and verifies the signature/seal of the person who authenticated the document. However, this deed, too, needs to comply with Indian laws such as the Indian Registration Act, 1908, and the Power of Attorney Act, 1882. You also have to pay the stamp duty on this. If one wants to obtain apostille in the US.
For any other information, feel free to call.
Regards.