My upstairs neighbours have their builders staying in their flat while my neighbours are away. Is this normal? Am I wrong in finding this strange? Now I not only have to put up with building noise during the day, I now also have to accept a bunch of strangers staying in my building all night (small block of flats)? They are noisy as well past 11pm (no surprise, it's a bunch of guys). I was not told by my neighbours that this would happen. Would you say something?