There is speculation that the Auckland region is to be governed by a single "super city" council.
The New Zealand Herald newspaper reports that the Royal Commission on Auckland Governance will recommend a single council stretching 140km from Wellsford to Pukekohe.
It would bring 1.3 million people into a single city from early next year.
The Royal Commission has until the end of March to report to the Government.
The region currently comprises a regional council, four city and three district other councils and 30 community boards.
Their total operating expenditure was approximately $1.7 billion for the year ending June 2007, according to the Royal Commission's website.
Auckland City Mayor John Banks told Summer Report an amalgamation could benefit Auckland in much the same way it has for Brisbane.
Waitakere Mayor Bob Harvey told the programme it would take an exceptional leader to run the super city.
Comment by Royal Commission
The Royal Commission on Auckland Governance says the article in The New Zealand Herald is speculative and unhelpful.
Chair Peter Salmon QC says there are many aspects of local and regional governance which are still being discussed and the Commission will provide its recommendations to the Government first.