The Dew's Site Plan The 4 Blocks reminds one of TWO sets of siamese twins More recent addition was HDB Skyline @ Bukit Batok Today, the HDB has mixed these flats with the bigger flats. At the Just T.O.P. Cheng San Court, there are such flats where the elderly parent’s 1 room flat is beside the son’s Or daughter’s 5 bedroom units