"The Government needs to clearly explain as soon as possible what is being proposed so it can be properly assessed,'' he said.
"I am very concerned about the negative impacts of problem gambling. If the Government decides to go ahead with the SkyCity proposal, I would expect it to include strong measures to minimise harm.''
Mr Brown suggested a range of options that could be included in any proposed deal.
They included harm minimisation officers responsible for identifying problem gamblers and intervening; pre-paid gambling cards with daily and weekly spending limits; on-screen harm minimisation messages that would be displayed before pokie machines could be activated; and a system that prevented medium to large prizes from being reinvested into pokie machines.
"I would expect these measures to form part of Auckland Council's final submission if the government proposes any legislative change.''
Mr Brown said he was an advocate of strong harm minimisation measures, such as a sinking lid policy for pokie machines in Manukau.
"However, the Government can simply legislate for more so we need reduce the harm of any proposal that is eventually put forward.''
Mr Brown said he was also concerned about the amount of gambling money that went back into community initiatives, and that needed to be looked at.
The convention centre was an important development for Auckland because it would bring in more jobs and economic development, but the lack of detail was not doing the cause any good, he said.