I am process of looking for a terraced house in the Preston area. I viewed a Victorian property in Higher Walton just south of Preston today (white house). I noticed that the neighbours ridge tiles seem level but on the house I viewed the tiles bow and there appears to be sagging especially towards the chimney side. I had a look inside the loft and could not see anything untoward. Should I be concerned or is it just part of a 100 year old Victorian house that creeks? If I live to be over 100 I am sure I would start to creek!