Here is an advertisement for the Botanic Cove development at Huntleys Cove (known at the time as Tarban) dating from 2000. The developer reported that construction was at the halfway stage. In 2002, residents decided through a vote to rename the suburb Huntleys Cove.
Source: Colliers Jardine. 1999. "Botanic Cove" (Advertisement). The Sydney Morning Herald, June 10: 15A (Domain liftout).