Anyone who is an Indian citizen by birth, but for employment or other vocational reasons stays outside India for an indefinite period time can be all as a NRI.
Person-of-Indian Origin
Person-of-Indian Origin can be people who are citizens of a foreign country, but who are born in India or whose father and forefathers were of Indian origin.
Overseas Corporate Bodies
These are bodies largely owned by people who are Indian citizens or of Indian origin but reside outside India. They include overseas companies, corporate bodies and partnership firms owned mostly by the Indian citizens or people of Indian origin. In these bodies, three-fourth of the interest are owned by Indian citizens or people of Indian origin
This is the area of the apartment/building which does not include the area covered by the wall.
Built up AreaThe Carpet area including Wall area.
Saleable area / Super Built up AreaThis includes the area along with the area under common space such as lobby, lifts, stairs, etc.,