The Northridge earthquake in 1994 damaged the chancery offices of the Eparchy of Van Nuys and the Cathedral of St. Mary. Bishop George Kuzma and his staff relocated to Phoenix and as a result St. Stephen's was named the pro-cathedral. In 2010 the Eparchy of Van Nuys was officially renamed the Holy Protection of Mary Byzantine Catholic Eparchy of Phoenix and St. Stephen's was elevated to a cathedral from its pro-cathedral status.