Set at a distance from the main building of Castlecoole, which is one of the finest late 18th century Neo-Classical houses in Ireland, is the Grand Yard, built in 1824 to the designs of Richard Morrison.
Although in use as stables until relatively recent times, it was adapted for use by an egg-producing company in the early sixties, and after it was vacated it deteriorated rapidly. Hearth was commissioned by the National Trust to carry out holding repairs to make the building wind and weathertight in 1989-90. New roofs and gutters, lead valleys, windows and doors were provided and some stonework repairs were carried out.