These small, well-designed little backyard houses are actually much better looking and more detail oriented than a basic box, without forsaking the modern, prefab style. Backyard Box, a company based in Seattle, designs and builds small prefab houses that can be used in many ways: as a rental income property, guest house, home office, mother-in-law apartment or a tiny house.
The smallest design is the MatchBox, a studio that packs a kitchen, living room and bath into 400 square feet. It can fit into a lot that is 17 by 27 feet and starts at $79,500. A larger design is the SandBox, a one story backyard cottage with kitchen, living room, bathroom and one bedroom. It is 600 square feet and is designed for simple and minimalist living on one level, and will fit on most city lots at just 17 by 37 feet. The SandBox starts at $86,500. Each of these houses are custom architect-designed and you can choose from three finish levels.