They will probably want to have an appraisal done anyway before they give a final commitment.
The bank even has to do that. And sometimes any previous nodding is worth very little.
Regarding the standard land value: banks of course also use that as a basis for the property valuation. And a lot depends on that for the later overall valuation. But often it’s quite nonsense. They create areas in which every property has the same standard land value. We once looked at a plot of land that was right on a four-lane road without soundproofing. Highest noise pollution according to the noise map. Four cross streets down the hill, you can no longer hear anything from the road. Instead, there is the best unobstructed view over fields and hills. But the same standard land value..