Central:
Who is the seller (city, company, or private person)?
As already mentioned above:
It depends...
Cities, for example, have hardly any leeway when the new development area is sold off.
Notaries read aloud during the notarization appointment...
"Consultation" is a different fee item – and generally does not take place at this point (and also not beforehand). However, detailed inquiries are possible – first to the seller, then possibly to the notary.
However, this does not include, for example: Where are the "pitfalls for me in the contract"?
The liability shoe is rather and better put on by a (specialist) lawyer – for a fee and with insurance.
Only your own obligation to verify (before purchase) protects you from "environmental hazards" & co. on the property (unexploded ordnance, poison), since regularly (and lawfully) the warranty for defects in quality (not legal defects) is likely to be excluded. One may wish this to be changed. But no seller does...