Alquist 3D is a Greeley, Colorado-based construction technology company that uses robotic 3D concrete printing to build homes, commercial buildings, and infrastructure. Founded in 2020 by Zachary Mannheimer, the company completed one of the first 3D-printed Habitat for Humanity homes in the U.S. and printed an ~8,000-square-foot addition to a Walmart in Athens, Tennessee - billed as the largest 3D-printed commercial structure in the country. In late 2025 it announced a landmark deal to print more than a dozen Walmart and retail buildings, positioning itself to commercialize 3D concrete printing at national scale.
Samara is a Redwood City-based prefab housing company building factory-made backyard homes (ADUs) for California homeowners. Spun out of Airbnb by co-founder Joe Gebbia, Samara handles the entire process from design and permitting to manufacturing and installation, with a stated goal of using accessory dwelling units to ease the West Coast housing crunch.