[2] The BLF fought successful campaigns which became known as the green bans against development projects which it viewed as harmful to the built and natural environment of Sydney and Melbourne.
[3] The green bans are now commonly recognised as directly responsible for saving areas of Sydney and Melbourne with substantial heritage value.
In NSW the union engaged in 'pink bans', halting work at universities to support gay students facing expulsion and discrimination.
[4] The BLF had a long-standing programme on Radio 3CR, "The Concrete Gang", which is now presented by the Construction, Forestry, Mining and Energy Union.
branch was instrumental in calling off many of the imposed green bans and the cancellation of the union's commitment to fighting for permanence in the building industry.