Building began in March 1933 and the foundation stone was laid on 6 August of that year by Bishop Thomas Mulvany. Murphy of Dublin were the builders, while much of the artistic decoration work was completed by Earley and Company of Camden Street, Dublin, and Oppenheimer Ltd., of Old Trafford, Manchester. The formal opening and dedication of the new cathedral took place on 6 September 1936.
The construction project started in March 1933, with Bishop Thomas Mulvany laying the foundation stone on August 6 of that year. Murphy of Dublin was responsible for the building, while Earley and Company and Oppenheimer Ltd. contributed to the artistic details. The cathedral officially opened on September 6, 1936.