We bought our house about 10 years ago after viewing about 25 other houses and I was shocked at the state some of them were in. That's leaving aside the dodgy DIY:
'We removed the chimney breast ourselves with a sledgehammer, it's really easy!'
'We installed that beam to make it look medieval (30s terrace) but you can remove it if you want!'
The frankly weird:
'We fitted three locks on the outside of our loft conversion in case of burglars.'
And the plain dishonest:
'Oh yes, it's a fourth bedroom definitely. You need to climb a ladder to get to it and it's just boarded over but that's fine. Our kids love it.'
'No, those drunks never normally congregate in the alley next to my house, not sure what's happening tonight. Oh well!'
At least a third of the houses we looked at were untidy, with toys everywhere, cupboards/drawers open, dirty plates on the side, dirty bathrooms, washing on the floor, overgrown gardens and junk in side returns ('Oh yes, we haven't got around to taking that to the tip yet'). And this was in a supposedly desirable area with people asking top dollar.
I mean, you have to live in the house while it's being sold so any reasonable person might expect some day-to-day stuff, but seriously.