Living Room, Concrete Floor, Sofa, and Rug Floor Architect Cindy Black chose terrazzo tile flooring by Concrete Collaborative over higher-priced competitors because it’s a “little more polished looking”. Before installing the material, the builder had to completely re-level the concrete subfloor, which had settled over time leaving a two-inch gap on one side. The sofa is from Room & Board, and the custom walnut media wall was designed to match the kitchen built-ins.  Photo 11 of 11 in A Renovated Midcentury Gem in Austin