Auckland Transport is concerned about the impending costs it will face if Drury's redevelopment goes ahead.

A report to Auckland Transport's (AT) board reveals it has misgivings about the planned redevelopment of Drury, which is likely to see the population soar in the next 30 years.

The paper said it is reviewing the private plan change proposals and what they entail for its funding of transport infrastructure.

Oyster Capital, Fulton Hogan and Kiwi Property are seeking to rezone about 330 hectares of land in the Drury East area from future urban to a mix of residential, business and open space zones.

A fourth smaller private plan change to rezone 33.7 hectares for mixed use housing by Karaka and Drury Consultant Limited was added to the public notification by council officers.

The AT report describes the changes as 'out of sequence' with the Auckland Plan 2050's Development Strategy and the Council's Future Urban Land Supply Strategy.

It states: “If these plan changes are approved by the council, there will be an expectation that the necessary transport infrastructure will be provided by AT to align with development demands.

“However, there is currently no funding allocated for these areas and overall funding over the next decade is under pressure. AT is working with council and government to identify potential funding and financing options, but it is not clear that will provide a timely solution.”

The paper says it would need to consider the area’s transport infrastructure requirements and how it could provide them, as well as how to align the public works with the staging and sequencing of the development.