| The Early Stages | The New Parish of 1856 | The Tragic Fire of 1920 | Rebuilding and Present Time |
| The Tragic Fire of 1920 |
On 26th January 1920, the sacristan arrived to open the church for the 7am Mass to discover that the switch panel was on fire. He raised the alarm but the whole front of the altar was already in flames. The fire spread quickly along the electricity wires and Canon Fricker was forced to stand and watch helplessly as the church was devoured by flames. At 9am the dome collapsed, crashing to the ground with a sound that was heard for miles around. Only the shrine of Our Lady of Perpetual Succour and the sacristy escaped damage.
Despite the flames, the curate, Fr. O'Loughlin succeeded in removing the Blessed Sacrament from the tabernacle. A local fireman, Jeremiah Lawlor, of the Rathmines Fire Station sustained a fractured rib as he attempted to contain the fire. As news of the fire spread, Archbishop Walsh and Alderman William T. Cosgrave of Dublin Corporation called during the day to offer sympathy to the parish priest.

Commencement of restoration work
The next day a heavy gale damaged two stained glass windows valued at £1,000.
The following week, on 5th February 1920, a public meeting to discuss the rebuilding of the church was held in the Mansion House. The Lord Mayor presided and those present included the Archbishop, the Lord Chief Justice and members of Dublin Corporation.
The architect, R.H. Byrne, was subsequently commissioned with the task of rebuilding the Church. In a short time the debris was removed and the restoration work began in earnest. A temporary roof was erected. The walls, although badly damaged, were found to be structurally sound, but the interior required considerable refurbishment. The façade was relatively intact. The cost of repairs was estimated at £35,000 but ultimately came to £55,000.