Orchid 
Polyhaus’ Tetra-One ADU unit redefines housing production through a fusion of speed, sustainability, and ecological stewardship. Engineered for rapid deployment and volume-maximizing construction, Tetra-One leverages modular design and precision prefabrication to dramatically reduce build times while optimizing spatial efficiency. Its core material—mass timber—is not only structurally robust but also inherently resilient to wildfire due to advanced charring behavior and protective treatments, making it ideal for fire-prone regions. The Tetra-One ADU is the first full structural diaphragm built entirely out of mass-timer in San Diego.
Beyond performance, Tetra-One embodies a regenerative ethos. By sourcing timber from responsibly managed forests, the unit creates a direct link between housing development and forest restoration efforts. Each build contributes to a cycle of ecological renewal, supporting reforestation, carbon sequestration, and biodiversity. This approach transforms housing from a consumptive act into a climate-positive intervention.
Tetra-One is more than a dwelling—it’s a statement of how architecture can respond to environmental urgency. It aligns housing needs with forest health, offering a scalable solution to both the housing crisis and climate resilience; one where shelter and sustainability grow together.