Integral House

Integral House is a private residence, located at 194 Roxborough Drive in the Rosedale neighbourhood of Toronto, Canada. The project was commissioned by James Stewart as a residence incorporating a performance space, and was designed by Brigitte Shim and Howard Sutcliffe of the Toronto architectural firm Shim-Sutcliffe Architects. The name of the house is derived from the mathematical integral symbol, commonly used in calculus; Stewart's wealth derived from his authorship of widely used calculus textbooks. It has won several architectural awards, including a 2012 Governor-General's Medal in Architecture. Glenn D. Lowry, director of the Museum of Modern Art, said of Integral House, "I think it's one of the most important private houses built in North America in a long time."

The house is on sale autumn 2015. The house was sold in 2016 by Sotheby's to a high profile musical couple. It had been rumoured the couple was Chantal Kreviazuk and Raine Maida but it was not them. Chantal's music video for Into Me was filmed in the house earlier this year.

In the late 1990s, James Stewart first conceived of creating a house whose design included both curves and a large and flexible performing space. After drawing up a list of architects he admired, he granted the commission to Brigitte Shim and Howard Sutcliffe of Shim-Sutcliffe Architects in 1999, and they began work on the design. In 2002, Stewart purchased the property where Integral House now stands, and then demolished the original house. Design work continued, and building began in 2003, with the project being completed in 2009. Even before the construction was complete, Architectural Digest magazine included the house in its annual Toronto tour. The final cost of the house was estimated at $24 million.

Integral House is a 1,700-square-metre (18,000-square-foot) house built into a hillside. The three lower stories are built into the ravine, below street level; only the two uppermost stories are visible from the street. The rear exterior is glass and oak. The design incorporates environmentally friendly features, including geothermal heating and cooling and planted roofs.

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