When buying a house, you should ask questions about the building fabric, energy modernization requirements, any damage or defects, and the condition of the roof, heating, plumbing, and electrical systems. You should also find out about the neighborhood, everyday amenities, and the location in general. Furthermore, you should find out about the running costs and check the documents. Here you should review a current extract from the land register, building permit documents, the energy performance certificate, and various other information.