To the immediate north-west of the castle at Charleville Forest, County Offaly stands an equally substantial block that once served as stables for the property. Like the main house, this was designed by Francis Johnston in 1798 for Charles Bury, Lord Tullamore (later created Earl of Charleville) and is in the same solid Gothic style. Unfortunately whereas the greater part of the castle is still in use, the same is not true of the stable block which as a consequence is now in a poor state of repair.