Heart of the City chief Alex Swney said New Zealand had been slow to capitalise on the lucrative conference circuit.
"We should have had [a centre] 10 years ago. These big conferences are everyday business that New Zealand is not participating in."
A 2009 Ministry of Economic Development feasibility study found a 3500-capacity convention centre in Auckland could attract around 35 big conferences a year and produce $397 million in economic benefits over 20 years through increased visitor numbers for events. It would also generate $85.4 million a year in increased tourism spending.
The ministry estimated that a centre would need to host 35 conferences a year to break even.
A new centre would also face heightened competition as the huge Sydney Entertainment Centre will soon have a A$1 billion ($1.2 billion) upgrade.
Mr Swney said the Government would have to find creative ways to fund the ongoing costs. He suggested a bed tax, which charged tourists more than locals to stay in commercial accommodation.
PROS AND CONS
* Total economic benefit: $397 million over 20 years
* Related economic benefit: $85.4 million increase in tourism and related expenditure a year.
* 22,000 new international visitors and 200,000 extra visitor days.
* Convention delegates spend $650/night (twice the average).
Risks:
* Economic downturn hurts conference numbers.
* Environmental effects of long-distance travel.
* Rise of video-conferencing.
* Convention centres do not fund themselves.
(Source: Ministry of Economic Development)