The California Coastal Commission has granted conditional approval for a planned $316 million consolidated rental car center at San Diego International Airport.

The proposal calls for a four-story, 66-foot-high facility with approximately 2 million square feet of interior space and 417 parking spaces, to be located on the northern side of the airport. Airport officials have said the project is in early design stages and is set for a 2015 completion.

The project also includes construction of an on-airport shuttle circulation road, to connect the new rental center with airport terminals. The coastal commission’s conditions for approval included the airport’s submission of a final transportation demand management program prior to construction.

The project aims to consolidate the operations of several rental car companies that serve the airport, from several downtown sites, into one facility to reduce traffic congestion and vehicle emissions. The facility is being planned for eventual Silver certification under the U.S. Green Building Council’s Leadership in Energy and Environmental Design program.

The rental car center is being built by a joint venture that includes the San Diego office of Sundt Construction Inc. and Dallas-based Austin Commercial. The project’s architect is Demattei Wong Architecture, based in the San Francisco Bay area.

— Lou Hirsh