The establishment of the Sisters of the Congregation of Notre-Dame in Pointe-Claire dates back to 1787, the year the first convent was built. Located behind the cemetery, between the presbytery and the church of the time, the convent made way for a new, more imposing church. An agreement based on a land exchange with the parish factory allowed the Sisters to obtain ownership of the banal mill and the point. In 1867, they erected their second construction on the current site.
Built according to the plans of Henri-Maurice Perreault, the convent also benefited from the work of Octave and Louis Bourgouin, resulting in a sober neoclassical appearance. Composed of a building core made of rough stones, it includes a basement, a ground floor, an upper floor, and an attic. The gabled roof features dormer windows and a small bell tower at its center. The interior of the building was completely modernized in 1962 when architect Louis-Napoléon Audet was tasked with expanding the original convent. Drawing inspiration from the architectural style and materials of the initial construction, primarily fieldstone, Audet added two perpendicular sections to the original building core to better meet the needs of the Congregation.
Originally dedicated to education, the convent recently housed a retirement home for the nuns.