Trades and supplies used to help build a home of a former Queensland union boss were secretly billed to a shopping centre development, the royal commission into trade union corruption has heard.
At the time of his house being built, Mr Hanna was the secretary of the CFMEU-linked Builder Labourers Federation union in Queensland.
The commission is examining whether construction industry executives conspired to rig the payments and if Mr Hanna's role as a powerful union boss in the sector had any bearing on such an arrangement.
It heard a Mirvac executive asked a tiler to include more than $50,000 worth of work on Mr Hanna's home in quotes he was preparing for the Orion shopping centre project at Springfield.
The tiler, David Mullan, said he did so "because my client asked me".
"I did not know why it was hidden," he told the commission.
The CFMEU did not announce Mr Hanna's resignation last month.
The union said in a statement on Monday afternoon it noted "with concern, the evidence heard in the royal commission today in Brisbane regarding allegations that David Hanna received free labour and materials from various building contractors".
"Mr Hanna resigned from all of his positions with the union in early August — the allegations aired today had not been raised with or provided to the union prior to his resignation," the statement said.
"The union understands Mr Hanna will give evidence this week in relation to this matter.
"The CFMEU does not condone nor accept the soliciting or acceptance of free labour and materials from employers by its officers or employees.
"Allegations of corrupt activity should be dealt with by the police.
"The union will cooperate with any such investigation."
The beat goes on 
