The two are joint symptoms of a broken national system, says advocacy coalition Everybody's Home. Instead of treating the issues separately, the organisation suggests a holistic approach with five prongs.

It wants more first-home buyer support, more low-cost properties, a better deal for renters, immediate relief for stressed households and a plan to end homelessness by 2030.

The group, which counts the Salvation Army, St Vincent de Paul and Sydney and Adelaide city councils among more than 300 partner and support organisations, is adamant owners, tenants and the needy are in the same boat.

"We cannot have a situation where house prices rise at close to 10 per cent a quarter in some cases, while social housing declines," campaign leader Kate Colvin said.

"That is a recipe for more housing stress, more homelessness and deepening inequality.

"On the current trajectory, housing stress is only going to worsen for people on low and middle incomes, which is why we need the federal government to make an urgent investment in social housing."

In June, federal minister for homelessness, social and community housing Michael Sukkar rolled out the latest in a series of projects: $30 million to build more than 100 social housing dwellings in Greater Hobart by 2022.

Australian Institute of Health and Welfare data shows the proportion of social housing has declined nationwide between 2014 and 2020 from 4.6 to 4.2 per cent.

House prices jumped by up to 9.3 per cent between January and April, according to CoreLogic's June report.

The national rental market is also supercharged, with rents for houses increasing 15.1 per cent on average and those for units up 8.1 per cent in the past year.

According to modelling by analytics firm Equity Economics, 7500 more people are expected to become homeless this year, up from 83,000, and rates of mortgage and rental stress will advance by a quarter.

At the top of the Everybody's Home wishlist is 30,000 new public housing units as a first step in addressing what it estimates is a national shortfall of more than half a million affordable dwellings.

It says the deficiency across a mixture of apartments, townhouses and free-standing residences is evident in every suburb and town in the country.

"Homes that ordinary families can afford is critical infrastructure for every community," Ms Colvin said.

"With a home everybody has the ability to live, work and raise their families but surging prices and low vacancy rates mean 'a place to call home' is increasingly out of reach for many Australians."

Equity Economics estimates Australia's lack of long term social housing leads to 7690 women a year returning to violent partners and 9120 becoming homeless.

In a report to the national Women's Safety Summit, it found the $7.6 billion cost of the federal government investing in 16,800 extra social housing units would be dwarfed by economic benefits of $15.3 billion and creation of 47,000 jobs.

The additional accommodation would also generate savings of $122.5 million a year due to women not returning to violent partners and $257 million due to them not having to experience homelessness.

The federal government says it has committed more than $72 million since September to the Safe Places Emergency Accommodation Program to support women and children escaping violence.

Australian Associated Press