More of a WWYD. We’ve moved into a house which has plans to extend. To facilitate this out builders will be knocking down the existing extension and rebuilding. Our wall is completely flush to the boundary with our neighbours, so much so that the fence (their responsibility) is attached to our house at the corner. They also have a wooden pergola type structure also attached to our wall. As the wall will be going- how would you approach them? We need access to their garden for scaffolding, but will be effectively destroying their fence and pergola as a result of our changes! I can only assume they got the relevant permissions from a previous owner, but where does that leave us?