By December 2013, while there were no inhabited WikiHouses, there were a few completed prototypes in addition to a usable walkers' shelter in Fridaythorpe, England.[1] These WikiHouses are single-story, square-shaped structures with sloped roofs and small foundations that measure about 175 square feet (16.3 m2).[2] By 2015, several additional WikiHouses had been built, including the following buildings and at the following events: