India has a deficit of 18 million houses in the urban areas. About 70% of which is accounted for by the bottom two quintiles of the income pyramid, households with income less than 5,000/=per month. Close to 800 households get added every day to the 14 million families forced to live in the slums of urban India. 80% of the housing deficit is accounted for by congestion; large families are forced to live in small tenements. In a business as usual scenario, the housing deficit will rise annually by half a million to about 40 million in 2051.