One Yonge Street

One Yonge Street (previously known as the Toronto Star Building) is a 25-storey office building in Toronto, Ontario, Canada. The building served as the headquarters of Torstar and its flagship newspaper, the Toronto Star, from 1971 to 2022. It is 100 m tall and built in the International style. It was built as a replacement to the Old Toronto Star Building, which was located at 80 King Street West. That building was torn down to make room for First Canadian Place.

The building is located at the corner of Yonge Street and Queens Quay.

The building also housed the printing presses for the Toronto Star's print edition until 1992, when a new press centre was opened in Vaughan, Ontario. The finished newspaper content is sent electronically to the plant where the plates are burnt and the paper is printed and distributed. The editorial content of the newspaper was produced by employees working on the fifth floor.

The office space at One Yonge Street is leased out to a variety of other companies, including Pinnacle International, the Liquor Control Board of Ontario, Ontario Cannabis Retail Corporation, RL Solutions, Starbucks, Luminus Financial, a dental office, and the downtown Toronto campus of Collège Boréal.

Torstar sold the building and its surrounding property to a private holding company in 2000 for $40 million, but the newspaper continued to occupy several floors of the building on a long-term lease. In December 2021, the Toronto Star announced that it would vacate the building and move its offices to The Well, an office complex that hosts other companies, in 2022. The move was completed in November 2022.

Redevelopment
The parking lot and podium associated with this building are part of a high-profile development known as Pinnacle One Yonge by developer Pinnacle International and designed by Hariri Pontarini Architects. The project includes five skyscrapers on two parcels of land bisected by an eastern extension of Harbour Street. The tallest tower would reach 95 storeys for a total height of 307 metres, making it the tallest in Canada. The three residential towers would total 2,962 condo units, and the two commercial towers would provide 154,000 sq.m of space.