structural:summarization
Informal housing and slums

As of 2011, about 66% of the population lives in formal housing, with the other 34% living in slums or chawls, which are tenements for industrial workers. There are approximately 700 slum settlements in Ahmedabad and 11% of the total housing stock is public housing. The population of Ahmedabad has increased while the housing stock has remained generally constant, and this has led to a rise in density of both formal and informal housing and a more economical usage of existing space. The Indian census estimates that the Ahmedabad slum population was 25.6% of the total population in 1991 and had decreased to 4.5% in 2011, but these numbers are contested and local entities maintain that the census underestimates informal populations. There is a consensus that there has been a reduction in the percentage of the population that lives in slum settlements, and that there has also been a general improvement in living conditions for slum residents.