En-bloc Sale (集体出售)

Refers to the sale of all the units within a housing development to a single party or a consortium/joint venture, who has the intention to redevelop the site into a new development. The enbloc transactions are first identified from caveat data in REALIS when it is observed that caveats are lodged on all the units within a housing development, usually with prices higher than the prices reported for past transactions in the same project or prices of similar projects in the vicinity in the same reference period. These enbloc transactions are then checked against an internal database of enbloc projects before being finalised as enbloc transactions in REALIS.

Source: Money Smart