Auckland mayoral candidate John Palino is promising to build a smart, green new city - possibly at Manukau - as an alternative to "sprawling intensification" proposed by Mayor Len Brown.
A second CBD is the most efficient and environmentally responsible approach to managing Auckland's growth, says the right-leaning businessman and main rival to Mr Brown at October's local body elections.
Mr Palino said concentrating new development on industrial land in Manukau or elsewhere serviced by rail or a busway would not only take the growth pressure away from suburban Auckland, but create a new city where people wanted to live.
He has criticised provisions in the new planning rulebook for the city - or Unitary Plan - to cram new residents into suburbs not designed for intensification. The plan may be notified on the eve of the elections and he has promised a review of it.