He came to Pittsburgh around 1897, and worked for several architectural firms before beginning his own. With the firm of Rutan and Russell, he built
St. Augustine Church on 37th Street in the Lawrenceville neighborhood of Pittsburgh. With the firm of
Beezer Brothers, he built
St. John the Baptist Church (now the Church Brew Works and Restaurant) also in Lawrenceville; both of these churches have been named Historic Landmarks by Pittsburgh's History and Landmarks Foundation. At least three of his churches are on the
National Register of Historic Places: St. Fidelis Church in Victoria, Kansas, Saint Thomas More Catholic Church (formerly St. Luke's Church) in St. Paul, Minnesota, and St. Gertrude Church in Vandergrift, Pennsylvania. Comès worked for nearly 20 years under his own name before adding two partners to form the firm of Comes, Perry and McMullen in 1921, just a year before his death. Comès was involved in the design of four cathedrals, all of which were built in the last years of his life. He is given sole credit for the design of
Christ the King Cathedral in Atlanta. He did the original design for
Our Lady of the Rosary Cathedral in Toledo, Ohio, but he died during construction and the final design is attributed to his colleague, William R. Perry. The firm of Comès, Perry and McMullen is credited with the design of the
Blessed Sacrament Cathedral in Greensburg, Pennsylvania, but the building was completed five years after his death. Comès is also credited with the interior design of the
Cathedral of the Madeleine in Salt Lake City, which was designed by
Carl M. Neuhausen and Bernard O. Mecklenburg. Comès was author of the 1920 book
Catholic Art and Architecture, which featured many of his designs. On Sunday, January 27, 2013, the Pennsylvania Historical and Museum Commission (PHMC) dedicated a state historical marker honoring John T. Comès and recognizing his accomplishments in church architecture. The marker was placed in front of the former
St. Agnes Church at
Carlow University, which was designed by Comès and opened in 1917. Carlow removed the historical marker in 2020 because it planned to demolish the church. ==Family==