Can anyone help? I am going to buy a house that has a few problems. It is a Victorian terraced house, the front and back walls are very, very damp, plaster breaking down from top to ground floor. On the upper floor there is a small tree growing out of the wall! It appears that the guttering has been very clogged and overflowing for years. Also there has been a new roof which seems badly fitted (if that is the right expression) On the ground floor they have built a lean-to against the already damp walls. After all that my question is - how can I tell how bad it is? could it have effected the brickwork and can it be repaired without major expense????