Three years after a post-flood voluntary home buyback scheme was rolled out in south-east Queensland, dozens of hectares of new open spaces has been created.

It's raised the question of what could, and should, be done with those now-empty blocks.

Since the 2022 floods, the Brisbane City Council has acquired 293 properties through the state and federal government-run program.

That adds up to more than 20 hectares of now-public land across the city, while surrounding councils have also acquired dozens of hectares themselves.

One of the suburbs with the highest number of buybacks is Oxley in the city's south, where Catherine Uroda has lived with her husband and their two daughters since 2008.

Their family home was hard hit by the devastating 2011 floods and was again inundated in 2022.

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