Renting out an HDB flat in Singapore is permissible only after the flat proprietor, who need to be a Singapore Citizen, has fulfilled the Minimum Occupation Time period (MOP), generally 5 years. Entrepreneurs must get official approval from HDB prior to the tenancy starts by distributing an internet based software, https://deanmxgnw.thezenweb.com/renting-out-hdb-480-26-75361116