A total of 481 car parking spaces at the Silverdale Park and Ride will open this month.
Work on expanding the facility has been underway since February.
An Auckland Transport spokesperson says that two sections will open around mid-December.
Auckland Transport has also applied for resource consent to fit in 127 more car parks (HM September 6).
The additional parks are to be created within the footprint of the existing site, on the left hand side of the main car park.
This will bring the total number of parks, when construction is finished, to 611.
* UPDATE *
Auckland Transport has since revised the date of this opening to January 2018, with no firm date yet available.