It's one thing to buy Ikea flat-pack furniture, but would you really dare to buy an entire house in a kit? There's a big difference between a bookshelf and a building such as a garden house , garden room, garden shed, summer house, sauna, garage, carport, gazebo, pavilion or even such an insignificant little building as an outhouse or playhouse. The short answer is 'yes'. Read on to get a more detailed answer, along with reasons why.