One not entirely unexpected problem is what to do about a 9" brick, 2 storey, end wall which has quietly subsided by about 10mm over the last 60 or so years. An inspection dig found no exterior corbelling and the wall standing on what appeared to be coarse gravel at 18" below soil level.
Building Control will be inspecting the flooring job and very unlikely to miss spotting inadequate foundations. Involving insurers will wreck the planned start of next Spring and may poison any future sales.
My current thinking is to involve a structural engineer and get any advised *reinforcement* done as part of the main project. Or...?