[3] The castle remained uninhabited from 1912 when Colonel Howard-Bury left to live in Belvedere House, County Westmeath.

Work on its restoration was commenced by Michael McMullen in 1973 and later by Constance Heavey Seaquist and Bonnie Vance.

[4] As of 2014, the Charleville Castle Heritage Trust was managed by Dudley Stewart,[2] with the day-to-day running handled by volunteers.

Events held at the castle have included "fright nights", an auction, and a play by the English Chamber Theatre called Dearest Nancy, Darling Evelyn.

[citation needed] Charleville Forest, which borders the castle, is classified as a Special Area of Conservation.