Thanks, I had no problem with the Article 50 card despite the somewhat bizarre situation that the Austrian authorities declared that an Anmeldebescheinigung they issued in 2008 did not mean what it said (ie “Sie ist zugleich das Dokument zur Bescheinigung des Daueraufenthalts”). It seemed to be just a means to extract the €70 from me. The card was issued fairly promptly.
There is no indication that the authorities will try to extract additional fees for property ownership. But where the Government has not made it transparent to the federal and local governments then naturally every time your lawyer has to ask a question then quite understandably he expects to be paid! So we must hope the EU will ask member states to ensure that where appropriate the terms of the WA are properly communicated to their devolved governments.