When we were looking, there was on not far from my SiL's house and she came to and tried to browbeat me into buying it.
The front door was hard to open and I realised that one side of the house was a bit lower than the other. It smelled strongly of damp and mould, they'd had a massive leak and all of the wood flooring was bowed up and ruined. Inside, there was stuff lying around, normal household things,
The big "front" room at the back had a triangular crack, about 2cm high, going from the ceiling to the floor corners - subsidence. I saw that the front was similar, but had been filled with plaster. Looking back to the front door, there was a diagonal crack running from the wall to the door...
The garden was a complete junkyard and totally overgrown, with bricks and lumps of concreted. In the middle, there was a raised drain, about 2 feet above ground level. I had a look at the attic conversion, as we were there anyway and it had all sorts, including loads of open boxes of Spanish and East European tobacco.
SiL was ordering me to make an offer, I said, "No, it's at the top end of what we can borrow and it'll need 50 grand in underpinning, never mind the damp and flooring." She insisted that it was just cracked plaster! The estate agent tried half-heartedly agreeing, till I raised my eyebrows.