Sembawang Beacon will comprise 775 units with a wait time of around three years. SINGAPORE: The first Build-to-Order (BTO) project in the new Sembawang North housing estate will be launched in the July sales exercise, said the Housing and Development Board (HDB) on Sunday (Jul 6). The Sembawang Beacon project will have 775 units on offer, with a range of flats from two-room Flexi to five-room and 3Gen, and a wait time of around three years. These units are part of around 5,500 BTO flats that