As noted previously, every level of the stations will be linked by elevators, staircases, and both up and down escalators. All stations have a concourse level — the middle level between the street entrance and the platform level — for the circulation space needed to accommodate passenger flows moving in and out of the station. The concourse levels vary in size, but the largest appear to be at Broadway-City Hall Station and Arbutus Station. Apart from South Granville Station, the fare gates of most stations are located on the ground level, near the entrance. Every station has a commercial retail unit, with all six units totalling over 3,300 sq. ft. of leasable space.