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One Delisle Condo

At a Glance


1 Delisle Ave, Toronto (Yonge and St. Clair Ave.)

Unit Types

Studio, 1 Bedroom, 2 Bedroom, and 3 Bedroom

Tentative Occupancy



Slate Asset Management


44 Storeys

Unit Count

263 Units

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1 Delisle Ave

Walk Scores

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About the project

One Delisle is a 44-storey condo proposed on Yonge just north of St Clair in Midtown Toronto, designed by Studio Gang Architects for Slate Asset Management.  Located at the soutwest corner of Yonge and Delisle Avenue, the tower is composed of 8-storey-high elongated hexogonal modules pieced together in a honey comb pattern.  A two-storey base creates a human scale at the sidewalk level, while above, the tower’s shap morphs from a square base to a 16-sided rounded peak.  

A series of elongated hexagonal modules pieced together in a honeycomb pattern transition the tower from a rectilinear base up to circular floor plates at its peak, giving the tower a distinct skyline presence. At street level, the podium would include a restoration and relocation of an existing Art Deco façade, forming part of a pedestrian-scaled base building at the corner of Yonge and Delisle. New streetfront retail opportunities will include a large second floor rooftop patio overlooking Yonge Street.


Developer Slate Asset Management
Architect Studio Gang Architects, WZMH Architects
Landscape Architect Janet Rosenberg + Studio
Engineering Grounded Engineering Inc.

Area profile

This grander vision and the interactions with neighbouring structures informed several aspects of the building. Much detail went into the design of the base, which responds to the 2-storey datum line of the storefront buildings along Yonge Street. 

The historic facade of one building will be retained, but will be pushed back a full 3.5 metres to create a wider 7-metre sidewalk along Yonge Street. The remainder of the base is designed with a human scale in mind, maintaining the 2-storey height and pulling back further from Delisle Avenue to create an 8-metre-wide sidewalk. 

The pedestrian environment and human scale are important components of Slate’s ambitious plans to improve the streetscape around Yonge and St. Clair in order to create a more inviting and walkable neighbourhood.

Delisle Parkette

Along with the new building, the Delisle Parkette on the west side of the site will be redesigned and enlarged as part of Slate’s larger makeover of the area. The surface parking lot to the east of the parkette will be combined with the existing green space, thereby enlarging it by 50%, and a pedestrian connection will slot between 30 and 40 St. Clair Avenue to the south to provide mid-block pedestrian access to St. Clair. 

Furthermore, the various underground parking garages of the buildings on this block will be combined and reorganized into one large garage, allowing for the removal of two of the five existing parking entrances and the coordination of underground loading and services. This will help to create a more pedestrian-friendly environment at street level.


About the Developer
Design Architect

Slate is one of Canada’s leading real estate investors and operators, with offices in Canada, the United States, and Germany. Slate focuses first and foremost on real estate fundamentals by using the expertise their professionals bring from across the industry. Their entrepreneurial approach to development focuses on design, sustainability and city building.

In 2013, Slate began to assemble a portfolio that now includes ten properties at Yonge + St. Clair including the buildings on all 4 corners. Through their hands-on asset management team and best-in-class partners, Slate is working to transform Yonge + St. Clair into a premier live-work-play neighbourhood.

Studio Gang is an architecture and urbanism practice based in Chicago, New York and San Fransisco. Founded by MacArthur Fellow Jeanne Gang, Studio Gang is known for creating innovative buildings that enhance the public space around them. Studio Gang has completed award-winning projects such as the Aqua Tower and Nature Boardwalk at Lincoln Park Zoo in Chicago and the Arcus Center for Social Justice Leadership in Kalamazoo, Michigan.

In addition to Toronto, Studio Gang is contemporaneously designing tall buildings in Chicago, San Francisco, New York, Los Angeles and Amsterdam, and was recently named one of two finalists to redesign the Tour Montparnasse in Paris. They’re also engaged in cultural and educational projects across the Americas, from the new United States Embassy in Brazil to the expansion of the American Museum of Natural History in New York and a consolidated campus for the California College of the Arts in San Francisco.

In 2016 Studio Gang was recognized as Firm of the Year at the Architizer A+ Awards and the Architectural Review named Jeanne Gang Architect of the Year.

World-renowned American architect Jeanne Gang has been retained by Slate Asset
Management to design her first building in Canada at the southwest corner of
Yonge Street and Delisle Avenue in midtown Toronto. The goal of the project is
twofold – first to bring broad-based urban improvements to the Yonge + St. Clair
community and second to reinvent the way we think about high-rise living. As the
2017 recipient of The Royal Architectural Institute of Canada’s Honorary Fellowship,
Gang’s firm is heavily focused on innovation, environmental sustainability,
research and human connections.

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