1738 – Ardgillan Castle, Balbriggan, Co. Dublin Originally an 18th century house with a two storey bow fronted centre and single storey wings. In the early 19th century,
1738 – Bective House, Smithfield, Dublin Architect: Richard Cassels Designed by Richard Cassels for Thomas Taylor, afterwards 1st Lord Headfort and Earl of Bective. It included extensive stables running back to Queen Street.
1738 – Newman House, St. Stephen’s Green, Dublin Architect: Richard Cassels Like Iveagh House further along St Stephen’s Green, Newman House is obviously two houses planted together due to the lack of a unifying facade.
1738 – St. Finn Barre’s Cathedral, Cork Built to replace a decaying medieval cathedral, it retained the tower and spire of the old cathedral. Completed in 1738, it was demolished in 1865 to make way for the present cathedral by William Burges.
1739 – Frescati House, Blackrock, Co. Dublin Built for the provost of Trinity College, John Hely Hutchinson, it was later acquired in the 1750s by the Fitzgerald dukes of Leinster.