Exterior, Metal Siding Material, Prefab Building Type, and House Building Type Method Homes is a custom manufacturer of precision–engineered, prefabricated, modern structures that services the Western United States and Canada, including Oregon. Their homes range in size and style, from 1,200-square-foot rustic cabins to 3,5000-square-foot contemporary residences. Method Homes also has an ongoing commitment to sustainable design, with many of their homes eligible for LEED certification and other environmental certifications; some homes can even be designed to be energy net-zero.  Photo 7 of 7 in 7 Prefab Companies That Oregon Dwellers Should Know