In the lead up to the October budget, the government pledged to spur more private sector investment in affordable housing via financial incentives to make such investments more attractive.

The government committed $350 million over five years towards the cause.

An Industry Super Fund report said the proposed reforms were a "step in the right direction" and offered some other solutions to unlock more private investment in affordable housing.

The report flagged a cross-subsidisation policy used in the United Kingdom where the government bridges the gap between operating rents and what the tenant can afford to pay.

The report also pointed to capital grant schemes, which cover a portion of construction costs for the affordable housing developer, as well as mandates to include a portion of affordable housing in developments.

General incentives for Australia's immature build-to-rent market were also encouraged. Unlike build-to-sell projects, build-to-rent developments are typically owned by institutional investors for the long term to be rented out.

Pathways to unlock more super fund investment into affordable housing will likely be discussed at the Treasurer's housing investment roundtable this week.

The reforms are intended to boost affordable housing supply, with unmet housing need already a massive problem that's expected to balloon to effect more than one million households by 2041.

New University of NSW research found housing affordability issues were expected to force thousands more people into homelessness, overcrowding or housing stress.

Housing affordability is already a pressing issue, with 640,000 households already living in housing that's not suitable.

This is expected to swell to 940,000 households by 2041, the researchers found.

Community Housing Industry Association chief executive officer Wendy Hayhurst called for additional investment from government and super funds to expand social and affordable housing.

"It is hard to think of a higher priority than giving all Australians a stable and secure home," she said.

Australian Associated Press