The aim of the project is to develop a complex system of precast concrete components for the underground construction prefabricated wooden buildings. The system will include components for both ground and basement foundation structures. The system will include the technology of joining the components into a load bearing and stable unit as well as detailed design documents and assembly procedures. The structure will also be completely demountable. The components will be made of concrete with recycled aggregate from construction and demolition waste, mainly from brick recyclate.