The Housing and Development Board (HDB) has launched 5,101 flats for sale under the August 2018 Build-to-Order (BTO) and Re-Offer of Balance Flats (ROF) exercise, it said in a press release on Tuesday (Aug 28). The flats include 4,375 BTO units in Punggol and Yishun and another 726 ROF units across various towns and estates, HDB said. BTO EXERCISE The BTO flats on offer are spread across four...