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The One Toronto

The One Toronto is the former name of One Bloor West, a supertall mixed-use skyscraper under construction at Yonge and Bloor in Toronto, Ontario.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 27, 2026|2 min read| Fact-checked

The One Toronto is the former name of One Bloor West, a supertall mixed-use skyscraper under construction at Yonge and Bloor in Toronto, Ontario. Designed by Foster + Partners with Core Architects, it is planned to rise to about 308.6 metres and 85 storeys, making it Canada’s first supertall building. The project is a notable feature on the Canada Map.

History

The project was announced as The One and has since been referred to as One Bloor West. Construction began in 2017 after years of planning and design changes, and the tower has gone through significant scheduling and financing challenges.

Design and program

The tower is a mixed-use development planned to include retail at the base, a hotel component, and residential units above. Its design by Foster + Partners and Core Architects features a distinctive exoskeleton.

Height and significance

At a planned height of 308.6 metres, the building would be taller than First Canadian Place and would become Canada’s first officially recognized supertall skyscraper. It is also expected to rank among Toronto’s most prominent skyline features. The building will stand out on the Map of Canada.

Location and urban context

The site sits in one of Toronto’s busiest commercial districts, near the city’s PATH network and the Yorkville area. Its position at Yonge and Bloor places it at a major transit and retail intersection. It is a key point on the Canada Map.

Key facts

  • The One Toronto is the former name of One Bloor West, a supertall mixed-use skyscraper under construction at Yonge and Bloor in Toronto.
  • It is planned to reach 308.6 metres and 85 storeys, making it Canada's first supertall building.
  • The building is designed as a mixed-use development with retail, hotel, and residential components.
  • Construction began in 2017 and has experienced delays and redesigns.
  • The tower is designed by Foster + Partners with Core Architects and features a distinctive exoskeleton.
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Canadian context

It is a major Canadian skyscraper project and, if completed as planned, will be Canada’s first supertall building and one of the tallest structures in the country.

Frequently asked questions

What is The One Toronto?
It is the former name of One Bloor West, a supertall mixed-use skyscraper under construction in Toronto.
Where is it located?
It is located at 1 Bloor Street West at Yonge and Bloor in Toronto, Ontario.
How tall will it be?
It is planned to reach 308.6 metres, or about 1,013 feet.
Who developed it?
Mizrahi Developments is the project developer.
Who designed it?
Foster + Partners designed the tower, with Core Architects also involved.
Why is it notable?
It is widely identified as Canada’s first supertall skyscraper, meaning a building over 300 metres tall.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/One_Bloor_West
    Supports: Former name The One; current name One Bloor West; planned height; storeys; status; location; construction timeline
  2. The Globe and Mail — https://www.theglobeandmail.com/news/toronto/the-one/article36498485/
    Supports: Project name The One; Toronto location; mixed-use program including retail, hotel, and residential components
  3. Foster + Partners — https://www.fosterandpartners.com/news/canada-s-tallest-building-the-one-breaks-ground-in-toronto
    Supports: Construction began; 85-storey height; Toronto location; country’s tallest building claim at announcement
  4. Walters Group — https://www.waltersgroupinc.com/project/one-bloor-west/
    Supports: Current name One Bloor West; former name The One; location; 85-storey residential tower; design collaboration
  5. Dezeen — https://www.dezeen.com/2025/06/26/canadas-toronto-supertall-skyscraper-one-bloor-west/
    Supports: One Bloor West reaching 300 metres; Canada’s first supertall building; planned height of 308.6 metres and 85 storeys