Auckland's new mayor and council face some big decisions to respond to the city's rapid growth, says council chief executive Stephen Town.
With Mayor Len Brown standing down at October's local body elections, a new mayor and council will inherit a city growing at between 40,000 and 45,000 people a year and a very tight set of financial accounts.
"The margins are narrow and everyone has got to be aware of what those are," Mr Town said about the financial levers available to council.
In the past month, the council's financial constraints have become very apparent following a council decision to dip into a "rainy day" fund to reduce the risk of a credit-rating downgrade.
Credit rating agencies have warned the council of a rating downgrade if its debt-to revenue ratio approaches 270 per cent. It is nearing 265 per cent.