Which rating system to use.

We are working on a large airport project. West terminal is registered in LEED NC v2.2 (construction not started as of yet). East terminal (future project) will be connected by large, concourse with restaurants, sterile/secure customs corridor, boarding areas. East terminal will be connected to the West terminal chiller plant and design has not begun as of yet (construction completion on East terminal is est. at 3 - 5 years out). Under what rating would East Terminal be listed when it is ready to be registered?