A new multi-point fuel station with retail store, car wash facilities and Auto Centre will likely be developed this year.
A 25-year lease agreement between Ports of Jersey and Roberts Garages Ltd has been reached for the site on l'Avenue de La Commune in St Peter.
Subject to planning approval, Roberts Garages plan to develop the existing 50,000 square-ft site into its flagship location.
The lease agreement follows an open tender process by Ports of Jersey.
The Managing Director of Roberts Garages Ltd said it represents a considerable investment for the company.