The registration and transcription fees for a property are 7% in Luxembourg.
In Luxembourg City, a 3% municipal surcharge applies to any building that is neither a single-family house, nor a rental house, nor a plot of land for building a single-family house or a rental house, thus increasing these registration and transcription fees to 10%. Detail: City of Luxembourg website (Chapter A-5 Page 19 – Municipal surtax on registration fees)