TradeMe's latest Rental Price Index shows the national median weekly rent's held steady at 620 dollars, but that figure rose five dollars to 675 a week, in the City of Sails.
Down south, Otago set a new high for the third consecutive month, to 590 dollars a week.
Property Sales Director Gavin Lloyd says record net-migration is behind Auckland's rise.
He says there's a lot of documentation about that currently, which is really impacting the city's market.
