Wondering if any of you kind folks can help on this matter. We occupy the first floor of a 2 flat house with a share of freehold which states that our responsibility for the freehold would include all repairs that take place from our flat and upwards (roof, etc) with our neighbour on the ground floor responsible for any repairs from his flat downwards. He may have possible subsidence and is looking to get a survey which he thinks both flats are responsible for as he feels the subsidence will affect the entire house we both occupy. My question is: Are we responsible for splitting the costs for this survey if he detects subsidence in his flat? Many thanks for any help you can provide!