Using the water as building ground has opened up a new approach to design the shoreline. The Etcet Cat Floating Houses aim to create areas with a positive architectural identity for both public and private use. The experience of using the Etcet Cat is built around having a continuos visual connection to the sea. The large glass front of the living room provides a generous view to the sea and the terrace, as well as each space has a its own window. The small movements of the house, light reflections and the high degree of transparency create a unique experience. The Etcet Cat is a flexible house providing a high degree of freedom to arrange the interior space according to a needs with movable walls. Etcet Cat can be used a permanent home, summerhouse or a powerboat. The Etcet Cat is specifically designed to suit the marine environment. Fibre reinforced plastic is the natural building material that is extremely whether resistant, light and rigid, requiring low degree of maintenance. The house is based on a catamaran hull that are separated into watertight compartments. The hull, floor, walls and roof are interconnected, creating a strong self-bearing skin structure. An excellent level of isolation is provided by the sandwich core. Etcet Cat houses can be connected to communal networks, but may also be highly self-sufficient. Designed to fulfil high environmental standards, the optional rooftop solar panels provide a significant amount energy, while the thermal pumps generate heating. The first Etcet Cat floating house was produced during 2015 and has been tested and used since then in Bergen, Norway. The learnings from this prototype are being used in the next phase of the project that is focussed on commercialisation.