Have heard several, first that it was built higher then planning permission allowed, second that it was built with out any planning permission at all and thirdly that after it was built it was deciced it was to near the edge to live in. Also heard that the owner died before it was finished and the rest of the family deciced they didnt want to live there because of ghost of local story.
I dont know, none of them may be right, will ask Dimitris if he knows for sure when we get there in 10days time. Viv