At least 2000 new homes will be built in Adelaide's southern suburbs after the State Government struck a deal with landowners.

Infrastructure deeds have been signed by all parties for the Onkaparinga Heights development, meaning important planning, engineering and land division work can now commence before critical elements such as earthworks, road network, water, wastewater and stormwater begin later this year.

This could enable construction on the new homes to begin as early as 2026.

The water and sewer infrastructure at the development – located at the end of the Southern Expressway – will be made possible thanks to a $1.5 billion investment in housing infrastructure announced as a key initiative of the government’s Housing Roadmap.

The Federal Government has also invested in enabling infrastructure for housing developments in South Australia through its $1 billion Priority Works Stream of the Housing Support Program.

Formerly known as Hackham, Onkaparinga Heights was one of four sites included in the State Government’s plan to increase the supply of residential land to address the housing crisis.

Onkaparinga Heights will be the first of the land parcels to be under construction, with the area already rezoned for housing.

The rezoning process for Dry Creek has recently begun with a code amendment initiated, while both Concordia and Sellicks Beach are also in the rezoning process with community consultation scheduled for 2025.

The 230ha Onkaparinga Heights is anticipated to provide around 2000 new homes, with at least 20 per cent to be affordable.

The State Government, through Renewal SA, proposes to bring the Onkaparinga Heights development opportunity to market in mid-2025.