10m² are available for PV modules, solar boiler, constructed wetland or green roof.

Sunbathe, enjoy a far-reaching view or take care of the roof garden. A lot of light enters the interior of the house through the sliding skylight. In addition, through the sunroof window you get access to the 10m² terrace. A narrower long window located above the kitchen serves as an extractor for the kitchen and provides a pleasant ventilation of the house.

On 7m² area can be cooked with two long kitchen elements. In spring, summer and autumn the gas hobs are used. The gas for this comes from our own mini-biogas plant from the Ernergiebox. In the winter months the wood stove hotplates can be used alternatively. The flue gas boiler provides hot water for the house in winter. The kitchen has a dishwasher and an oven. To save electricity in the winter months, the oven can also be used as an oven.

The 160cm round window with a 60cm deep sill, serves as a lounger to relax and read a book. The table is accompanied by a 2-seater bench and two stools, providing seating for 4 people. The size of the table top can be varied by extending or retracting it under the kitchen step. Furthermore, the table top can be freely removed and converted into a temporary guest bed together with the stools and the bench. The wood stove as a fireplace provides a cozy warmth. A panoramic window provides enough light and view on the south side.

In this module is the entrance door. This module contains almost all water-bearing elements of the house. Shower, sink, toilet, washing machine and a heat exchanger for heating are installed here. Hidden in the partition between the entrance and the bathroom are all the pipes to the kitchen. A small mirrored wall cabinet is used to store the care utensils. The sliding door to the bathroom is also located in the partition. In the back of the wardrobe, this module still has storage space for cleaning utensils and vacuum cleaner.

In the bedroom there is room for a double bed with two storage boxes side by side. Above the bed is another 3m³ of storage space for seasonal clothing or sports equipment, for example. The wall furniture is multifunctional and serves as a closet for clothes, as an office workstation and as a staircase. A window door provides floor-level access to the garden. A small fresh air opening on the north side of the house provides fresh air here. Inspired by Japanese studio spaces, the small office desk sits at a corner window with a view outside.

Storage volume for water treatment (4m³), mini-biogas plant (3m³) and the salt water battery (5m³). The house is supplied with electricity, water and gas through the energy box. The water is to be kept in the cycle. By means of a constructed wetland on the roof and a carbon filter in the energy box it will be recycled to drinking water. In the mini-biogas plant, food scraps and feces are turned into methane gas by microorganisms. This in turn can be used for cooking. The residual liquid of the mini-biogas plant can be used as fertilizer (slurry) in the garden or greenhouse. A saltwater battery (redox flow battery) serves as power storage. This is particularly environmentally friendly thanks to the easy recyclability of the electrolyte fluids and, compared to battery storage, it cannot burn. The photovoltaic cells (12m²) on the roof provide the necessary energy through the sun.

In order to place the house in virtually any desired location, screw foundations made of galvanized steel are used. Adapted to the particular soil conditions, these foundations can be easily rotated out of the ground and reused after the house is moved. The resulting hole is filled with fresh soil and planted a tree.