The judge ordered Eckersall to pay a £17,500 fine and £3,275 in prosecution costs, saying he took a #8220;catastrophic decision#8221;.
55-year-old David Eckersall had planning permission to extend his cottage in Thornton-in-Craven and demolish a small existing extension.
A North Yorkshire builder who demolished his Grade II listed cottage while his neighbours were on holiday has been ordered to pay more than £20,000 in fines and costs.
His neighbours returned from a holiday to find the demolition had left left their adjoining late-18th century cottage with no proper gable wall, a hole in the bathroom and no roof on its dining room.
But a judge at Bradford Crown Court was told how, after beginning the work, he knocked down the whole property with a digger in April last year.
In court, Mr Eckersall claimed he took the decision to knock it down after making a hole in a wall to pin the new extension to the existing cottage and it became clear there were significant structural problems which were making the whole building unsafe.