The East Annex Heritage Conservation District was the first large scale residential neighbourhood to be studied in Toronto as a potential heritage conservation district. The East Annex demonstrates the gradual growth of Toronto and its overall character of cohesive and distinctive from the neighbouring Yorkville to the east and the Annex to the west. The character of the area is one of incremental change where the major periods of development, most importantly from the 1870s to the first decade of the twentieth century, are amply represented by individual buildings. However, each avenue in the District varies to reflect its own unique development and building history.
The East Annex Heritage Conservation District Study was undertaken in October 1993 under the direction of the Toronto Historical Board and the District was passed by Toronto City Council under By-law 520-94 on July 26, 1994.