Tiong Bahru is a housing estate located within the Bukit Merah Planning Area, in the Central Region of Singapore. Tiong Bahru was constructed in the 1920s by the Singapore Improvement Trust, the predecessor to the Housing Development Board and an entity of the British colonial authority providing mass public housing in Singapore and is the oldest housing estate in Singapore. The main estate consists of 30 apartment blocks with over 900 units of two to five rooms. There are also high-rise Housing and Development Board (HDB) flats and condominiums along Boon Tiong Road, Jalan Membina and Kim Tian Road which surround the main estate.
Since the mid-2000s, Tiong Bahru has undergone rapid gentrification and the neighbourhood has become synonymous with trendy cafes and indie boutiques amid pre-war architecture.