The parish was established by the Order of Saint Basil the Great in 1902, at first without a permanent home. A small log church was built in 1904 under the leadership of the Reverend Sozont Dydyk.
Architecture
The current building was designed in 1938 by the Reverend Philip Ruh, an Oblate missionary from Belgium who intensively studied the Byzantine Rite building designs of Ukraine so that the building would be culturally acceptable to the parishioners. His design mixes elements of Ukrainian Baroque with Western European influences, to produce a uniquely Canadian style dubbed "Prairie Cathedral". If not for the height restrictions at the time of construction because of the Edmonton City Centre Airport (which also affected the Ukrainian Orthodox Cathedral of St. John the Baptist), an overall more properly proportioned church building would be at least 4-5m taller. Nevertheless, this cathedral is considered to be "the most elaborate Ukrainian Church in Alberta" and "one of the finest examples of Ukrainian-Canadian church architecture".[2] Ruh also designed St. George Cathedral in Saskatoon and the Ukrainian Catholic Church of the Immaculate Conception in Cooks Creek (Springfield), Manitoba, which was designated a National Historic Site of Canada in 1996.
Construction lasted from 1939 to 1947. The building became a cathedral when Edmonton was selected as the seat of a new exarchate headed by a bishop. The first bishop was the Most Reverend Neil N. Savaryn, appointed "Bishop Ordinary for the Apostolic Exarchate of Edmonton serving Alberta and British Columbia".[2]
Starting in 1951 the process of painting the interior murals, frescos, and icons began under the leadership of Professor Julian Bucmaniuk, a well-known muralist. In 1968 the iconostasis was built. St. Josaphat Cathedral was designated as a Provincial Historic Resource by the province of Alberta in 1983,[3] and as a Municipal Historic Resource by the City of Edmonton in 2015.[4]