This was disputed by a council spokeswoman who said the Auckland development committee had been fully briefed on opportunities with Precinct, but was unable to say when or provide any briefing documents.
She said no decisions had been made on the future of Queen Elizabeth Square and discussions were continuing.
Last month, councillors were given less than 24 hours to consider a report on the privatisation of Queen Elizabeth Square before voting 14-7 to approve the sale in principle to Precinct.
The report to the Auckland development committee recommended the sale in principle, with the proceeds going towards new or improved public spaces in the area.
The report did not spell out the opportunity to keep Queen Elizabeth Square in public ownership as public open space.
Waitemata and Gulf councillor Mike Lee, whose ward includes downtown Auckland, accused council staff of "withholding wholesale information and releasing a retail version of reality that suits them".
"We have a culture problem in the Auckland Council with information. Good decisions cannot be made unless councillors are given all the facts," Mr Lee said.
Mr Darby has lodged a notice of motion at Thursday's governing body meeting requesting that Precinct press ahead with the option of retaining Queen Elizabeth Square in public ownership, and this be independently evaluated against the privatisation option.
The notice of motion also calls for an independent evaluation of existing and potential values of Queen Elizabeth Square.
A commercial real estate expert said the 2000sq m public square had a value of between $20,000 and $30,000 a square metre, valuing the public asset at up to $60 million.