@OP,Notary job ends when he/she confirms if the property is legally owned and has no legal or financial liabilities.What is done/built on the property and if not mentioned on the deed is not covered.Yes notarys fug up but there liability insurance covers for it.I have bought 11 properties in Poland in 19 years and never had a problem except alcohol permission being denied by the spodzelnia (which I take it as my fault for assuming I will get it).
I will kick up one hell of a fuss in the British press
You can try whatever which will not do crap,and if takes heat you will be punished more in Poland.Change your attitude and deal with it rationally locally.YOU have to loose more then the local authorities as your money is involved.GOOD LUCK.