In simple terms, 1BHK is an abbreviation for a house which had one bedroom, a hall or living room and a kitchen. In large cities and metros, apartments with this configuration are common because of the limited space available. However, any house which has one bedroom design, along with a living area and a kitchen can be called a 1BHK. A 1BHK bungalow design, for example, or a 1BHK farmhouse design, would both be much larger than a flat with similar configurations.