The document discusses housing in Delhi across seven types: homeless, JJ clusters, resettlement colonies, regularized and unauthorized colonies, urban villages, walled city and extension, and planned colonies. It notes that 76% of Delhi's population lives in substandard housing. The largest populations live in planned colonies, followed by unauthorized colonies. Most housing units are self-constructed and rental. The document outlines hurdles such as safety, lack of infrastructure, and restricted land ownership across housing types and proposes solutions like redevelopment, compliance with building codes, and increasing affordable housing options.