As a Senate battle looms over a proposed housing future fund, experts on Indigenous housing, homelessness and Australia's property sector will front a parliamentary committee to examine the plan.
The federal government's signature $10 billion housing fund passed the lower house in February but faces an upper house battle as the Greens demand further measures to ease the property squeeze.
The Greens - whose vote the government will require to pass the bill - are calling for a minimum of $5 billion to be invested in social and affordable housing every year and the removal of the $500 million annual spending cap.
The minor party is not alone in questioning how the annual spend will be allocated.
In a submission to the committee, the National Aboriginal and Torres Strait Islander Housing Association (NATSIHA) called on the government to clarify the rationale behind the $500m annual limit.
The association noted the first review of the annual spend won't be until December 2028 under the current proposal, and called for this to be brought forward along with additional reviews every three years.
Meanwhile, the peak body for the property industry wants the future fund to be doubled.
In its submission, the Property Council of Australia also called for a commitment from all levels of government to redirect one per cent of development taxes and charges to social and affordable housing.
It also recommended the review of the fund be brought forward.
The government plans to set up Housing Australia, an independent body tasked with distributing the fund, and a National Housing Supply and Affordability Council which will provide independent advice on increasing housing supply.
But the NATSIHA is concerned about ensuring Indigenous representation in both organisations.
"Given the current state of the Aboriginal and Torres Strait Islander housing sector, it is imperative that there be designated positions on both (organisations) for Aboriginal and/or Torres Strait Islander people who have substantial knowledge of the sector," the NATSIHA submission said.