Areas — Aldinga & Sellicks Beach 5173 · City of Onkaparinga · about 41 km from the CBD
Earthworks in Aldinga & Sellicks Beach.
The far south is opening up. Main South Road is now duplicated through to Aldinga, Renewal SA and Villawood are starting civil construction on an 800-home Aldinga project in late 2026, and Sellicks Beach has been rezoned as a growth area, though building there waits on infrastructure.
The ground and the work in Aldinga & Sellicks Beach
Ground varies across the Willunga Basin, from coastal sand and calcrete near the beach to heavier clays inland. We work to each lot's geotechnical report rather than assuming one condition for the area.
Dust and stormwater are the issues the council has raised for Sellicks Beach, and both apply to any site works on open coastal ground: water carts, staged stripping and stormwater kept to the approved discharge point.
Growth front — Civil construction starting late 2026; Sellicks Beach rezoned (deferred)
What's being built around Aldinga & Sellicks Beach
Aldinga (Renewal SA with Villawood)
45 ha, about 800 homes with at least 25% affordable; civil construction and sales start in late 2026 (Renewal SA, updated September 2026).
Sellicks Beach growth area
About 134 ha rezoned under a Coordinated Development Overlay: no development until dust, infrastructure and environmental issues are resolved (City of Onkaparinga, February 2026).
Main South Road duplication
Stage 2, including the Aldinga interchange, opened in February 2026.
Project details are from the public sources below, as published at the time of writing. Developers and government set the timing, not us; check the source for the latest stage.