The purchase and sale of immovable properties in India by a Non Resident Indian (NRI) or by a Person of Indian Origin (PIO) is really a very simple and easy affair with not much hassles and problems. For a detailed and authentic answer one should always refer to the Foreign Exchange Management (Acquisition and Transfer of Immovable Properties in India) Regulations, 2000 as amended from time to time.
The above regulations have been notified by the Reserve Bank of India vide Notification No. FEMA/21/200-RB dated 3rd May, 2000. Likewise, to get a latest update on the subject the readers may also very carefully go through the latest Master Circular on Acquisition and Transfer of Immoveable Property in India by Non Resident Indians/Persons of Indian Origin which has been issued by the Reserve Bank of India vide Master Circular No.4/2012-13 dated 2/7/2012.