Tiny house in Sweden

"The ONE+ minihouse is built by Swedish carpenters and delivered in one piece ready to use. With this innovative modular house system several modules can be coupled together in different ways, to fulfil the individual needs. Quite simply - a lego system for adults!

​The basic module is 15 sq meters, and named "friggebod" in Sweden. In Sweden 15 sq meter does not require a building permit.

​ONE+ is complete from start and is provided with electrical outlets as well as WC, shower and kitchen if wanted."
http://www.addaroom.eu/Bilder.html