Central Coast Mariners' home will remain at Bluetongue Stadium in Gosford next season, though a partial relocation to Sydney's northern suburbs remains a possibility in future years, with a proposed upgrade of North Sydney Oval gathering momentum.

North Sydney Council is preparing to meet the standard, set by FFA, required to regularly host A-League games at North Sydney Oval by improving facilities and the playing surface in hope of luring the Mariners on a more regular basis.

The council is forecasting the costs involved to implement drop-in wickets, add lighting and build referee and medical rooms as well as media facilities, such as elevated access for camera crews. The full costing is not expected to be completed and submitted for council approval until late March but early indications suggest that the major items will be affordable under the condition that they can host up to four Mariners home games per season.

North Sydney Council wants to bring the Mariners to the region as part of its rejuvenation of the central business district and is willing to finance the developments to do so.