On 1 February 1889 (the feast of St Brigid), Bishop Gibney laid the foundation stone for a large school building.

The nuns provided access to the school buildings for church services, but this was very inconvenient to constantly re-arrange everything, so a committee was formed in April 1901 to raise funds for the building a church and a presbytery.

It was decided that the Sisters would sell the convent to the Western Australian State Government to be used by organisations such as the Department of Corrections and for Technical and Further Education (TAFE).

The State Government offered the Sisters the opportunity to buy back the convent and a community grant was used to restore the buildings.

[1][6] In 2011, the St Brigid's Convent is used as the Congregation administration offices of the Sisters of Mercy in West Perth.

[1] The church is built in Federation Gothic style with walls of red brick.

On the corner nearest Fitzgerald and Aberdeen Streets, the stairs to the choir are extended up to a tower containing a belfry.