It would not have been mentioned as really what is it stating? From a valuation company who like all the others, base their ´values´on euros per sqm metre and not on actual selling prices.
So frankly it is out of touch.
Useful to some degree, but which I dont know. Tinsa were ordered by BOS to tighten up their valuation criteria, but in my experience, all valuations are still way above actual selling prices.