The John McKenzie House was built in 1913, in a style described as Queen Anne Revival, Arts and Crafts, and Edwardian. The grand, red brick house is profiled by a large L-shaped veranda with stylized Doric columns. Significant interior features include the centre hall plan, a vestibule door and sidelights with beveled and leaded glass, a large leaded art glass window that lights the landing of the main staircase, panelled doors, and original radiators. In 1993, the Ontario Historical Society (OHS) entered into a partnership with the former City of North York to preserve and restore the John McKenzie House, which serves as the provincial headquarters of the OHS.