I have a situation where a terraced property is being extended. The property has an original offshoot containing the kitchen. The owner is extending the offshoot by 3 metres under part (e), which seems fine on the face of it. However, when I went to take a look, the original offshoot has been entirely removed and a new extension that is the length of the old extension plus 3 metres exactly, but is wider by a foot and taller than before, has resulted in a 7.5 metre extension, 3 metres high along a boundary with another terraced house. The new addition is overbearing and overshadows the neighbour badly . Has the owner removed his right to 'add on' to the original extension if he has entirely removed it? If he has, then the extension he is building should only be 3 metres from the rear wall of the main house. If he hasn't, the Regulations have allowed for a massive extension which is totally unacceptable to the neighbour with no means of taking any action to remedy the detrimental effect on their amenity, which seems incorrect. I can't find a lot of caselaw on this topic as I suspect there hasn't been a great deal yet, so any assistance is greatly appreciated.
