Permission is being sought to redevelop part of Muckross House in Killarney.
The Department of Arts, Heritage, Regional and Gaeltacht Affairs is seeking to alter and refurbish the ground and first floor of the existing stable building.
The building currently contains the house tour facilities.
The proposed works will include the removal of an internal stairs, partition walls and public toilets and the blocking up of internal openings.
The refurbishment will include two new stairs, internal walls and doors, public toilets and offices.
Kerry County Council will decide on the application by June 3rd.