Summerhill station opened in 1954 as part of the original Yonge line. The tunnel connecting Summerhill station with
St. Clair station (which is the next station north) originally ended immediately north of the station at Summerhill Avenue and continued in an open cut as far as Pleasant Boulevard. Various sections of this open cut were roofed over as the years passed, and since the early 1980s it has been entirely under cover, except when one block was opened to allow new construction above it. Passengers who look out from the train into the tunnel on this section can still see the sloping sides of the original cut, the stumps of lamp posts and trees, and the undersides of six bridges which still carry six streets (Woodlawn, Summerhill, Shaftesbury, Scrivener, Price and Rowanwood streets) over the line. South of the station, the tunnel emerges to the surface at Rowanwood Drive. Originally, the line surfaced at Price Portal, but a one-block section from Rowanwood Drive to Price Street was roofed over in 2002 for parking. In a February 2020 meeting of the TTC board, the TTC proposed a secondary exit for emergency use. The station entrance is at the north end of the station. The proposed exit would be at the south end of the station and emerge to the surface at Scrivener Square. There would be underground corridors to connect the platforms to the new exit, with one corridor running under the subway tracks from the northbound platform to the west side of the tracks. Accessibility upgrades at the station began in the fourth quarter of 2021 and included the installation of elevators connecting the north and south platforms to the street-level concourse. Construction was completed in December 2025, rendering the station fully accessible. == Nearby landmarks ==