Grand Designs Australia is an Australian spin-off of the British TV series Grand Designs. The show documents people who attempt to build a custom-designed house and the challenges they face. It originally aired on Lifestyle and was hosted by the architect Peter Maddison.

The series renewed more episodes for the 10th season in October 2022 at Foxtel’s 2023 upfronts, which is split into two parts and was intended to be the final season of the series. However, in March 2023 the series was renewed by the ABC. In November 2023, the series was confirmed at ABC’s 2024 upfronts, which included the announcement Maddison will be replaced by Anthony Burke as host, and a spinoff series, Grand Designs Transformations, which follows renovations instead of new builds, has been commissioned with hosts Burke and Yasmine Ghoniem. Grand Designs Transformations premiered on 4 January 2024. In September 2024, it was announced the series will return on 10 October 2024 and will also feature Grand Designs UK host, Kevin McCloud, alongside Anthony Burke in a premiere special.