The so/called Happy Cheap House is a prototype for low-cost prefab homes and it was designed by Swedish architect Tommy Carlsson. The home is clad in corrugated iron and boasts of an innovative shape, which makes it both unique as well as more functional than a traditional home. The Happy Cheap House measures 110-square-metres and its design is focused on optimizing the internal space. This is a two-story home, with the ground floor consisting of an open plan living room, dining room and kitchen. The first floor, on the other hand, consists of two bedrooms and a lounge.