We have sold our house and have put an offer in on an older property. We had a structural survey done and Its come back with a lot of issues. Some I think are pretty standard for an older house, others are more concerning e.g., huge retaining wall which surveyor can't really say if it's sound or not. The surveyor has said there is a major issue with the garage - the steel supports on the the floor are corroded and could collapse, the roof is leaking as well. Vendor says it's nonsense. He won't budge. Would you walk away?