Figures released today show two thirds of housing and homelessness services in Australia are struggling to meet growing demand.

Greens housing spokesperson Senator Scott Ludlam said the findings by ACOSS confirm the need for The Greens' one billion dollar initiative to eliminate homelessness in Australia - Leaving No-one Behind.

Senator LUDLAM: I move

That the Senate-

(a) notes that:

(i) on any given night more than 105 000 Australians are experiencing homelessness, including 7 000 people sleeping rough or without adequate shelter,

(ii) while the rate of rough sleeping fell by 13.5 per cent between 2006 and 2011, in 2012 more than 136 8000 instances for a request for assistance went unmet, and

The Coalition has turned its back on 105,000 homeless Australians today by refusing to commit to the aim of halving homelessness by 2020.

Australian Greens housing spokesperson Senator Scott Ludlam said the Coalition's rejection of a Senate motion on homelessness showed "extraordinary hypocrisy".

"Last Thursday night myself, Malcolm Turnbull and Christopher Pyne took part in the CEO Sleep Out but today the Coalition refused to put their money where their sleeping bags are.

Australian Greens housing spokesperson Senator Scott Ludlam says modern, pre-fabricated homes should play a part in solving the national housing and homelessness crisis, by delivering new homes that are cheaper and faster to build and more energy efficient than conventionally-built homes.

"Modern, modular housing offers a significant opportunity to deliver new and affordable housing in a fraction of the time of traditionally-built homes, as well as being a more environmentally sustainable product," Senator Ludlam said.

The Australian Greens launched an ambitious national strategy today to eliminate homelessness by 2020.

Greens housing spokesperson Senator Scott Ludlam announced the action plan - Leaving No One Behind - this morning after spending the night on the streets of Civic in Canberra for the St Vinnies CEO Sleep Out to raise funds and awareness for homelessness.

Australian Greens housing spokesperson Senator Scott Ludlam will spend tonight sleeping on the streets of the nation's capital to raise awareness of homelessness.

"There is no reason why any Australian should be denied the basic human right to shelter. I hope Australians will donate to St Vinnies by sponsoring me for the Sleep Out, and will get behind the Greens' campaign to deliver affordable housing and better services for those in need."

With almost 18,000 children under the age of 12 homeless in Australia, new ideas and new funding to tackle homelessness must be on the table for the Federal election, Greens Senator Scott Ludlam said today.

On Youth Homelessness Matters Day Senator Ludlam - the Greens spokesperson for housing - said youth homelessness was "a growing national tragedy that demands extraordinary measures".

Australian Greens housing spokesperson Senator for Western Australia Scott Ludlam will welcome Swags For The Homeless founder Tony Clark at Parliament House today, and urge the Government and Opposition to embrace major reforms to tackle long-term homelessness so that emergency interventions are not necessary in the future.

A group of volunteers from ‘Swags for the Homeless' begin their long walk from Canberra to Sydney today to raise awareness and money for helping the homeless.

Australian Greens housing spokesperson, Senator for Western Australia Scott Ludlam, praised the group and urged the Government and Opposition to heed their calls.

"Swags for the Homeless provide emergency swags to help the many Australians sleeping rough. A swag can mean making it through a winter night. This is something all parties should unite to support.