The BTO system offers you flexibility in location and timing of your flat purchase. A BTO exercise offers a range of flat types across a few towns.
SBF exercise offers balance flats from earlier BTO exercises, surplus Selective En bloc Redevelopment Scheme (SERS) replacement flats, repurchased flats, etc.
The open booking of flats offers unselected flats from past SBF exercises. Flat buyers can apply online and receive a queue number for flat booking on a first-come-first-served basis, and book a flat as early as the next working day, where possible.