LNP wants CCC boss to step aside over weekend phone call

The LNP has called for the head of Queensland's corruption watchdog to stand aside during a probe into Deputy Premier Jackie Trad's controversial Woolloongabba property purchase.

It comes after revelations Ms Trad called Crime and Corruption Commission chair Alan MacSporran a day before she referred herself to the body.

The LNP has called on Alan MacSporran to recuse himself from a probe into Deputy Premier Jackie Trad.Credit: Dan Peled/AAP

On Monday, Ms Trad referred herself to the CCC over the purchase of a Woolloongabba property by her family company VBT Investments along the route of Cross River Rail, a project for which she had ministerial responsibility.

Ms Trad also failed to declare the property on the Queensland Parliament's register of members' interests within a month, as required.

The LNP had already referred Ms Trad to the CCC over the matter late last week.

During estimates hearings this week, Ms Trad revealed she called Mr MacSporran on Sunday, a day before she referred herself, arguing it was a "courtesy".

"I rang the head of the CCC to advise him that I would be providing information in relation to this matter and that I would be fully co-operating with whatever assessment or outcome of that assessment that the CCC would undertake," she said.

"In no way, shape or form was I suggesting or implying a particular outcome.

"It was a matter of courtesy. I made a file note of it."

LNP deputy leader Tim Mander said it was totally inappropriate for Ms Trad to call the CCC after the referral.

Mr Mander called for Mr MacSporran to recuse himself in the investigation into Ms Trad.

"Jackie Trad has compromised the integrity of the CCC by directly contacting the chairman on the weekend."

Ms Trad said she volunteered the information about calling Mr MacSporran during estimates.

"If I sought to influence Mr MacSporran in any way, I don't think I would be disclosing it in parliament at an estimates committee hearing," she told ABC radio earlier on Wednesday.

Ms Trad insisted she had no role in the house purchase and her husband advised her by text that he was interested in buying it.

The Woolloongabba property bought by Jackie Trad's family company VBT Investments.

"It was at a time that a lot of other things were happening," she said.

"I trust my husband - he manages his income in the way that he decides."

Premier Annastacia Palaszczuk said Ms Trad had assured her "nothing inappropriate took place" and she still had confidence in her Deputy Premier.

Ms Palaszczuk defended Ms Trad's plans to embark on a scheduled international trade mission on Friday.

"Ministers have to, and she's the Deputy Premier and Treasurer, have to undertake their responsibilities, so their responsibility is after a budget to go and talk about the Queensland economy to the major investors around the world," she said.

A CCC spokesman said the body did not comment on matters that were under assessment.

"However, for transparency, the CCC confirms the chairperson was contacted by the Deputy Premier who advised she intended to refer herself to the CCC," he said.

"The referral was received.

"The assessment of this matter remains ongoing so it is not appropriate to comment further."

Ms Trad has pledged to sell the property for the same price at which it was purchased.

She also removed herself from any decision-making involving the $5.4 billion Cross River Rail project while the CCC considered the matter.

- with AAP