Exterior, House Building Type, Stone Siding Material, Wood Siding Material, Metal Siding Material, Glass Siding Material, and Flat RoofLine Combining a prefab steel super-structure with concrete walls and insulated metal panels, Anthrazit House in Santa Barbara was designed by architects Pamela and Hector Magnus and built in collaboration with EcoSteel.  Photo 5 of 5 in From the Ashes