Briefly, my neighbour has shared freehold of a building which is two maisonettes. He lives upstairs. New downstairs neighbour with the other share of the freehold has put an application in for an extension. Upstairs oppose, as do I.
As I understand it both parties need to agree, but they don't. He has said no to three different plans yet she has put an application in to the council.
This extension will take up probably two thirds of their back garden. They have a front garden used for parking.
Upstairs will now be looking out onto the roof of the extension and I think that it may devalue his property.
The small portion of garden left will be adjacent to my bedroom window, so when they have guests round they will only be able to sit outside in the small portion or garden, with the new extension wall bouncing the sound towards me. A bit nimby but they aren't the quietest people and the prospect of a summer of BBQs in the 3x3m 'courtyard garden' remaining does not fill me with glee.
Is there a legal precedent about extensions in shared freehold properties?