The church of St. Margaret Mary was initially to be built as a Chapel-of-ease. It was felt that the need existed for such a chapel, deeper into Green point, mainly to accommodate the many elderly people living in this area of hills.

However, when Mgr John O’Rourke succeeded Fr Tom O’Sullivan as Parish Priest he saw, with foresight, that a larger church would be necessary, and out of his dream, the Romanesque-style church of St Margaret Mary was built, with a seating capacity of 350 persons.

The church was opened by Cardinal Owen McCann on the 28th January 1958, and became, in time the parish church of Sacred Heart. A feature of this church is the elegant baldachin above the altar.