Terraced into a steep slope in the foothills of Arizona’s Tucson Mountains is a hard-edged residence that appears to grow out of the rocky hillside. Interior and exterior walls of the single-wythe custom home combine exposed, sandblasted concrete block with steel, birch, and concrete. The blend of textures and tones echoes the raw desert landscape.

The architects specified the Integra post-tensioned masonry system, which uses lightweight, H-shaped block that are open on both ends and feature a small center web. The wall was then filled with expanding foam insulation to achieve an R-value of 26.