
The decision was made by An Comisiun Pleanála
Conor McGregor has been refused permission to build a six-bedroom mansion in Kildare.
He had appealed a rejected request from Kildare County Council to An Comisiun Pleanála for the development in Straffan.
The plans included a swimming pool and cinema, across a 2,290 square metre house.
An Comisiun Pleanála inspectors said it would seriously injure the visual and rural amenities of the area - and set a precedent for out-of-scale homes in the area.