My semi detached neighbour is planning a single storey extension to make her kitchen/dining room bigger and she is sending round a surveyor to do a schedule of conditions. We also have a single storey extension (that was here when we bought the house) but the two extensions will be about 400mm apart as neither are on / to the boundary. Will the surveyor want to look in all of the rooms upstairs and downstairs that are on the party wall or just the wall adjacent to her kitchen/diner and her new extension? Thanks