Make more use of your home's lot with a Backyard Room. Ranging in size from just over 5 to nearly 23 square meters, they can be configured as offices, pool houses, studios, or even full-featured dwellings. Each one is made primarily using wood from renewable, certified sources, and has other earth-friendly features like high-insulation floors, walls, and roofs, optional solar panels, and optional garden roofs. Best of all, they typically don't require a permit, can be designed and built in just six weeks, and can be installed in under a week. The bad news? If you live outside of Australia, you're probably out of luck.