As per the Real Estate Act in India, an apartment whether called block, chamber, dwelling unit, flat, office, showroom, shop, godown, premises, suit, tenement, unit or by any other name, means a separate and self-contained part of any immovable property, including one or more rooms or enclosed spaces, located on one or more floors or any part thereof, in a building or on a plot of land, used or intended to be used for any residential or commercial use such as residence, office, shop, showroom or godown or for carrying on any business, occupation, profession or trade, or for any other type of use ancillary to the purpose specified.