ለረጅም ሕልውና ሥነ-ምህዳራዊ በሆነ መንገድ የተገነባ እና ለጉልበት እና ለውሃ ፍላጎቶች ከውጭ አቅርቦት ሙሉ በሙሉ ነፃ የሆነ ቤት ።
A house built in an ecological way for a long existence and which is completely independent of an external delivery for its needs in energy and water.