I've been watching it for a while and have noticed that the Brits tend to ohh and ahh over pretty much everything. Literally.
A decrepit house with 70's era decor leads to the comment "lovely use of space."
An ancient stone house with the roof falling in has them saying "what potential!"
An old pig sty covered in petrified manure and dead flies? "Wouldn't this make a lovely 2 bedroom cottage?"
Are these people excessively polite in front of the camera? Or do they simply have extremely low standards?