The auditorium of the Tecumseh Opera House stands 30 feet wide by 60 feet, 6 inches long. The theatre does not have a balcony. The original molded white tin ceiling is still there, however it and the surrounding walls have experienced rain damage. The proscenium arch spans 20 feet across and 11 feet high. The stage floor is 18 feet deep from the beginning of the arch at the front of the stage to the back wall. The stage has no apron and contains no trap doors.
