Flat-Roof garages are very hard to find in the world of garage stock plans. Behm Design has made a few which have been popular. They feature minimally sloped (nearly flat) for required drainage and have ventilation as required by the building code. If you have a flat-roof style of home or simply wish to reduce visible building mass on your property for light or view corridor then flat-roof garages may be a perfect choice. Behm Design offers several sizes.