For a modern property the staircases are shocking, especially the external side on. Not too sure how that will affect #4 but it looks a bit iffy to me.

All that said and done, I would love to have a house next door to us once again now, and be rid of that hidious white rotting hoarding at all the way up my driveway and path.

Can't win now, worried about the stability of the house, but want something there.
Ideal solution, refuse permission for a basement, fill the whole thing with concrete, and build a house. Win win.