I have a fairly old ground floor kitchen extension at the back of the house. My neighbour wishes to build a similar extension and wants to use the adjoining side wall of my extension as part of this work.
He has vaguely mentioned:
"It (the shared wall) will be one side of the new roof support"
"We don't need to put up any new brickwork for sound/heat insulation, we'll just skim it on our side"
"There can't be any air bricks in it, it's a side wall"
"Our foundations are bound to be lower than yours so they won't create any risk of damage to the wall"
So who should I ask for professional advice about what I should or should not agree to? Would this be a surveyor, structural engineer, architect, builder? And what detailed information should I ask my neighbour's builder to supply? (I'm confident that they are NOT getting an architect or surveyor involved).
any help much appreciated
I'm based in North London BTW
Dave