Plans to allow for buildings up to 206 metres high at the southern end of Sydney’s CBD, including a 39-storey tower planned for tech giant Atlassian, have stoked fears that they will dwarf the landmark Central railway station and lead to "adverse visual impacts".

An area named the western gateway is the first stage of a massive redevelopment of the 24-hectare Central precinct, which extends from the railway station to Cleveland Street.

An artist's impression of the towers on the western edge of Sydney's Central station.

The area to the western edge of the railway needs to be rezoned to allow for the redevelopment targeting tech firms and start ups. Atlassian plans a tower up to 180 metres for its headquarters, which will comprise 39 levels, five of which will be occupied by a YHA hostel of 500 beds.

While the redevelopment of the precinct has received substantial support, the proposal to permit towers up to 206 metres high has raised concerns that the sandstone train station will be "overwhelmed" by the new high rises nearby.