 Two early projects were the completion of Rokeby Hall and Ballymakenny Church, Co. Louth, to the designs of Thomas Cooley in whose office he first trained.In 1789 he was commissioned by Richard Robinson, 1st Baron Rokeby, and Archbishop of Armagh to design the Armagh Observatory and in 1790 he designed a new club house for Daly's Club on College Green, close to the Irish Houses of Parliament.Townley Hall, 5 km west of Drogheda, built between 1794 and 1798, is considered his finest work.