During the early 1990s, a community organisation (Coalition Against Lane Cove Valley Freeways) was formed to oppose plans for the construction of the B2/B3 extension, designed to connect the M2 motorway in North Epping with the Pacific Highway.

The Comenarra Parkway, a minor arterial road consisting of only one lane in each direction, creates a boundary with Turramurra, to the north and West Pymble to the south.

The strong community support for the anti-freeway campaigners resulted in the protection of the bushland at the foot of the suburb of South Turramurra as part of the Lane Cove River National Park.

The environmental community group STEP Inc, which was formed in South Turramurra in 1978 has grown to be a powerful force for the environment in northern Sydney.

There are also a number of Churches and various religious temples in South Turramurra, some having youth groups for children aged 5–18 years old.