There were several types of houses in the Lower Town. Some houses were big, while others were smaller in size. There were single room tenements which were meant for the common people. Some houses were large and were equipped with courtyards and big rooms. They also had private wells and toilets. These houses were meant for the rich. Apart from large and small houses, there were barracks which were meant for those engaged in labour activities. The variation in the size of houses reveals that there was social stratification during the Harappan civilisation. Those who lived in larger houses belonged to the rich class whereas those who lived in smaller tenements or barracks belonged to the lower classes.