The architect appointed to design the church was John Bolger. However, he used the plans for a previous church, in Townsend Street, which had been designed by James Leeson. Assistance was received from
Francis Johnston and James Lever. The roof was by Richard Turner. The exterior of the church has a Doric portico with a statue of St. Andrew, sculpted by
John Smyth (1776–1840), son of
Edward Smyth (d.1812), sculptor of the Riverine heads at the Custom House.
Dominic Corrigan (1802–1880), a noted physician, is buried in the crypt of the church. ==Organ==