Looking to build a small extension to the current kitchen extension on the back of a terrace. Student house. Next door is a student house too. Had it confirmed that PP not required, comes under Permitted Development
If I write to the Leaseholder of next door and to Coppen (Freeholder) I would expect, especially from the latter, for probably no response within the time period, meaning that we have to draw up a full agreement get surveyor(s) etc., and they'd look to charge both houses a ludicrous permission Fee.
So tempted not to bother in the first place, it's only a knackered old wall between back yards, take loads of photos to show nothing untoward has happened to their wall, and just get on with it.
What would you do...?