Largest Asian slum's rehabilitation begins. The rehabilitation of residents of Dharavi, considered to be Asia's largest slum, has begun in Mumbai as billionaire Gautam Adani's firm performed 'Bhoomi Pujan' at the 22-acre Matunga railway site on Monday. Ten 37-39-storey towers with 10,432 homes measuring 350 square feet will be built at the site. Dharavi residents in Sector 6 and 1 will receive initial occupancy.