translate English to German: While the house was "rock-solid and earth-covered" in construction, the owner of a neighboring plot was so excited by the concept that he wanted to buy the building frame from his neighbor.
Die Planung eines solaren Passivhauses ging von den gleichen Gegebenheiten: Gebäude, Orientierung und Erschließung aus, wobei die vorhandene Grundstücksfläche nur halb so groß war.