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The Queensland premier is hoping next week's federal budget will give housing the significance it deserves after a summit of industry leaders was told the state is missing 20,000 rental properties.

More than 100 representatives from governments, social services, charities, property and construction groups took part in Thursday's summit to address what's been called an affordability crisis.

Premier Annastacia Palaszczuk said she was looking forward to the federal budget in her closing remarks to an audience, which included federal Housing Minister Julie Collins.

The state has pledged to do an immediate stocktake of land holdings that could be used for housing, and flagged a potential funding increase for emergency accommodation.

Ms Palaszczuk said the key term from the summit was "gentle density", which includes things like duplexes and small-scale apartments.

It's sometimes referred to as the missing middle for housing options between family homes and high rises.

"The prices of housing and rents are forcing people to move away to outer suburbs, away from their friends and family," she said.

"How do we do that gentle density to keep families and communities together."

Southeast Queensland's regional plan will also be reviewed as a result of the summit.

Treasurer Cameron Dick said about 20,000 homes have been withdrawn from Queensland's rental market in recent years without a clear explanation.

He told attendees the state should have 55,000 more rental dwellings than it does.

Treasury analysis found much of the shortfall can be attributed to rental properties being bought by owner-occupiers, a slowdown in construction of new homes, or stock taken out after being damaged in recent floods.

However, Mr Dick said the analysis found a shortage of 20,000 rental homes "cannot be explained by available data".

"What's happened in the housing market very unique, very unusual, and has not happened before in Queensland," he said.

The missing rentals could be explained by people using their investment properties to work from home during the COVID-19 pandemic, or holding them for sale or for use as holiday homes.

Tenants Queensland CEO Penny Carr told the summit the tight rental market has left people vulnerable to rent rises.

"We had two clients ... one had a $170 a week increase and the other had a $120 a week increase," she said.

"They were both in the market with the same landlord for five and six years."

Planning Institute of Australia's Matt Collins said policymakers should put more focus on security of tenure, rather than solely home-ownership.

"(So) they're not at risk arbitrarily of having that tenancy end and having to relocate ... particularly in a market like we have now that can have really significant impacts," he said.

Meanwhile, Ms Palaszczuk said about 5600 new social and affordable homes would be built by 2027, on top of the 6365 promised by 2025.

She said the government will double its Housing Investment Fund to $2 billion, which will create annual returns of $130 million to be invested in dwellings.

"That's a good portion of money that's dedicated for building new homes," Ms Palaszczuk said.

"This additional investment also recognises the impact that rising cost of building materials and labour is having on prices right across the construction sector to secure much needed additional supply."

© AAP 2022

A jury has not yet reached a verdict after a full day of deliberations in the trial for the man accused of raping Brittany Higgins.

Bruce Lehrmann is charged with sexual intercourse without consent.

He has pleaded not guilty and has faced an almost three-week long trial in the ACT Supreme Court.

Ms Higgins alleges Lehrmann raped her inside a ministerial office in Parliament House after the pair went out drinking with colleagues.

Lehrmann denies any sexual interaction took place.

Chief Justice Lucy McCallum provided detailed instructions to the jury before they began their deliberations on Wednesday afternoon.

She reminded jurors that Lehrmann was presumed innocent unless or until his guilt was proven by the prosecution beyond a reasonable doubt.

She told the jury it must act impartially, without emotion or prejudice and give a true verdict according to the evidence presented in the courtroom in the past three weeks.

"You are not answerable to popular opinion ... whichever way you may think it sways," she said.

"Your verdict, whether it be guilty or not guilty, must be unanimous."

The chief justice summed up the prosecution and defence cases and said it was up to the jury to decide which evidence they did and did not accept.

But she warned them not to invoke any stereotypes they may hold about an event or situation they have not experienced personally, saying there was "no template" for life.

"Be careful about speculation and pre-conception ... be careful not to make assumptions about how a person may behave in circumstances you have not experienced," she said.

Lehrmann exercised his right to silence and did not enter the witness box during the trial. The jury was instead played his police interview.

Chief Justice McCallum said his decision not to give evidence in court could not be used as an admission of guilt and did not strengthen the prosecution's case.

She also said Lehrmann's agreement to do a police interview did not shift the burden of proof to him.

The jurors will on Friday enter their second day of deliberations.

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Greens senator Lidia Thorpe has resigned as deputy party leader in the Senate following revelations she failed to disclose a relationship with a former bikie boss while on a powerful parliamentary committee.

The ABC revealed Senator Thorpe had not disclosed she was in a relationship with former Rebels president Dean Martin while serving on the parliamentary law enforcement committee.

The committee had been receiving confidential briefings about bikie gangs at the time.

Greens leader Adam Bandt requested Senator Thorpe's resignation from the party leadership in the wake of the revelations, which she accepted.

He said her failure to disclose the relationship was a "significant lack of judgment".

"As leader I expect my senators and MPs, especially those in leadership positions, to exercise good judgment," he said on Thursday.

"At a minimum, Senator Thorpe needed to disclose to me her connection to Mr Martin and her failure to do so showed a significant lack of judgment."

Senator Thorpe said she had accepted the mistakes she had made.

"I ... have not exercised good judgment," she said in a statement.

"I will now reflect on this and focus on my important portfolio work, especially advocating for First Nations people."

Prime Minister Anthony Albanese said the revelations about Senator Thorpe's relationship were concerning.

"Australians are entitled to believe that the oversight processes over the legal system will be maintained in a way that ensures integrity and ensures that any information which is given there is kept in a confidential basis," he said.

"I note that Senator Thorpe has said that this is an error of judgment - that is the least description that I would put to it."

The prime minister has called on the Greens leader to explain what he knew and when about the undisclosed relationship.

Mr Bandt said he was not aware of the revelations about Senator Thorpe's relationship until he was contacted by the media.

He said it was disappointing the relationship was not disclosed.

"People are entitled to trust that where there are issues that affect the work of senators, all members of parliament, that they will be disclosed," he said.

"It is disappointing because it is an error, a significant error of judgment from someone who has a lot to offer this country and a lot to offer this parliament."

Mr Bandt said the senator had not been involved in the justice portfolio since the May federal election.

Opposition frontbencher Angus Taylor said Ms Thorpe was undoubtedly conflicted while on the law enforcement committee.

"It sure looks like a conflict of interest to me, she's dating a bikie boss at the same time she's investigating the bikies," he told Sky News.

"I note she's maintained her portfolio positions. The Greens have also been keen to lecture us on integrity, but they would be hypocritical if they don't take appropriate action ... this is a pretty egregious conflict of interest."

© AAP 2022