Regent Park, Block 11, One Oak Street - Regent_Park_one_oak_1-1

Regent Park, Block 11, One Oak Street

The mixed-use rental, family residence at One Oak Street is one of the first new projects in the revitalization of Regent Park. The project began in 2003 when the City of Toronto and the Toronto Community Housing Corporation approved the Regent Park transformational plan.

Kearns Mancini Architects was selected to design the TCHC owned, rent-geared-to-income, mid-rise apartment building at 1 Oak St. The project site fronts on to the east side of Parliament St. with Cole St. to the south and Oak St. to the north. The eastern boundary is defined by a new city lane. One Oak St. plays an important role in the redevelopment of Regent Park, while providing 84 affordable, sustainable midrise homes for Toronto families, a City of Toronto Daycare and generous amounts of retail space facing Parliament St.

Consisting mostly of 2 and 3 bedroom family units, the decision by TCHC early in the design process – to not provide balconies to most apartments, enabled the design to draw inspiration from Toronto’s best known building type – the midrise industrial loft. Accordingly, red Toronto brick is used to compose elegant proportions and massing of volumes with large, multi-paned, black mullioned windows, relating to the scale of the streets and buildings that surround the site. Windows are grouped into oversized patterns of glass and coloured spandrels which add visual vitality and a generosity of scale which blurs the floor to floor height of the building.

The green roof with community garden plots combine with the communal terraces to give residents outdoor social and leisure spaces without having to leave the building. The roofs and terraces are also harvesting rainwater to supply the freshwater needs of the residents. The extensive use of brick assists in achieving a window to wall ratio of 38 – 62, thereby providing residents with a highly efficient, affordable, thermal enclosure with low heat loss while still admitting ample daylight and extraordinary views of the Toronto skyline in all directions.

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One Oak Street, Toronto, Ontario

Gross Project Area

119,942 sq. ft.




Completed, 2010

Project Value

$24.4 Million

Project Team

Jonathan Kearns, Joel Starkman, Christine Leu

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Focusing on the interior comforts of the occupants, Kearns Mancini Architects designed a subtle, layered approach to family housing. This ten-storey building features retail fronting Parliament Street, daycare on two levels, underground parking, and 84 rent-geared-to-income residential units above.

Family units are a mix between four, three, and two bedroom units with amenities spread throughout the building on the first, fifth, and eighth floors. Drawing on the City’s existing loft typology of simple brick and large glass façades, this mixed-use residential project elongates the buildings elevations in relation to the street.

The building then steps back exposing the massing of unit blocks providing for two communal lounges and landscaped terraces on the south Cole Street elevation.

Kearns Mancini Architects applied strong environmental design principles to achieve LEED Gold certification. A low glass to wall ratio minimizes heat loss and locally sourced, recycled materials were used.

The low maintenance green roof is an innovative feature integrated in the design, reducing the upkeep of the building and cooling it in the summer. As a means to integrate the building into the larger context of the city, the building is located near the prominent streetcar stop at Dundas and Parliament.

The One Oak Street design offers a subtle, inviting design approach to the Regent Park neighbourhood. Kearns Mancini has designed for residents’ comfort; the integration of safe communal terraces and in-house daycare offers living accommodations geared to family lifestyles.

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