The redevelopment of existing slums and MHADA buildings will soon be brought under the regulations of the Maharashtra Real Estate Regulatory Authority, state Housing Development Minister Prakash Mehta said today. He was replying in the Legislative Assembly to a calling attention motion by BJP MLA from Dharavi, R Tamil Selvan. Dharavi is dominated by slum clusters and has several buildings that have been constructed by the Slum Rehabilitation Authority (SRA). As per rules, slums are redeveloped by builders under SRA guidelines and comprise a saleable portion, for fresh buyers, apart from homes meant for rehabilitating slumdwellers. "This decision will impact the lives of at least 50-55 per cent of the population of Mumbai. Almost 41 per cent people live in slums as per the 2011 census.