A plan to build shops, a parking garage and up to 720 new dwellings next to the Dunn Loring Metro station saw approval with Fairfax County’s Planning Commission on Wednesday, a major step in passing the county’s most recent rail-driven development.

Developer Trammell Crow Residential is seeking a rezoning to build the high-density project on the parking lot of the Orange Line Metro stop. A positive recommendation from the planners gives the project a serious advantage when it goes before the Board of Supervisors for a final vote on Dec. 4.