Mr Ramsay raised the issue during First Minister’s Questions yesterday (18th June) in the wake of the Welsh Government planning inspector’s decision to overturn permission to turn the historic building into flats.
The decision was something of a bitter blow to owner and director of Timbershore Ltd Peter Carroll of Chepstow, who has owned the mansion since the 1970s.
The 125-room building has been slowly deteriorating since the 1990s when it was a privately-run special school and was at one time a convent and later owned by the former Gwent County Council. The house has been described as: "probably one of the most important buildings in Monmouthshire".
Mr Ramsay said: "This decision throws the future of Troy House into peril and its rich heritage could be lost forever.
"What consideration was given to the implications of overturning the planning decision and how will the Welsh Government ensure that this mansion, which has played a big role in Monmouth’s history, does not now fall into ruin?"
Mark Drakeford, who took the qustion on the floor of the Sennedd, said: "I understand the point that he makes about the need to take into account in planning decisions the listed status of buildings of that sort.
"The planning inspectorate is entirely independent of the Welsh Government. It operates through a set of rules that we lay down.
"The Minister with planning responsibilities has heard the points that Nick Ramsay has made," added the First Minister. "We will look again to make sure that the rules within which the planning inspectorate operate take into account the points that have been made about the need to have due regard to the listed status of buildings when making those determinations."