A High Court decision today has cleared the way for Justice Minister Michael McDowell to complete his holiday home near Roosky, Co Roscommon.
The President of the High Court, Mr Justice Joseph Finnegan, found that Roscommon County Council misconstrued the scope of its function under the Planning Act.
The council had taken into account its conclusion that there was non-compliance with the original planning permission.
The council relied on this as the reason for refusing a further extension to the planning permission.
The judge found it was not entitled to do this and he quashed the decision.
However, Mr McDowell and his wife Professor Niamh Brennan could still potentially face difficulties over the planning for their holiday home when the house is complete.
This could arise because of the differences with the house under construction and that in the original planning permission.