This paper deals with the specifics and working procedures for 3D digital reconstructions of defunct buildings of rural architecture. The resulting 3D models are to be used for presentation and educational activities intended for the lay and professional public and are based on archival sources - archival 2D metric survey documentation (drawings and photographs), written sources. Another requirement is the possibility of presentation on the internet within a parallel developing web platform. SketchUp 2021 Pro software, extended by plug-ins, is used for the 3D modelling process.