"it's always surprising to me how few people actually have a 'proper' survey which is often a miniscule percentage of the agreed sale price"
It's 5 years since we bought our house, and admittedly things may have changed thanks to Covid and the great interest rate hikes that followed, but if we had told the seller we wanted to do a "proper" survey, we never would have got the property.
There were so many people looking for houses at that time, that it was just by luck we got talking to some people who where there at the time, who turned out to be the owners, and they took a liking to us. They basically said if we put in a reasonable bid, the house was ours.
Ask for a Survey, and they would have just moved to the next person, who was happy to take it. It's shit, but that's where things were at that time, it was a seller's market. If you didnt have the money available immmediately, and ready to sign on the dotted line. Kiss good bye to getting the house.
Whether that's still the case, I dont know, but considering how many people are still looking for a home, I certainly wouldnt doubt it...