Exterior, House Building Type, Flat RoofLine, Wood Siding Material, Stone Siding Material, Metal Roof Material, and Stucco Siding Material Reinforced concrete was used for the retaining walls and slabs along all grades, while wood framing with steel framing beams were used at cantilevered areas.    Photo 2 of 17 in A Tiered Home in Los Angeles Hugs a Steep Slope