University of Maine to 3D Print Up to Nine Homes Using Wood Waste

The University of Maine Advanced Structures and Composites Center has announced a partnership with the Penquis community action agency to build up to nine 3D printed homes in the Greater Bangor area. The project marks the first time the school's BioHome3D technology moves from a single research prototype to repeatable housing production.

Each home will be printed from a composite material made of wood fiber and bio-resins, giving a second life to residual wood from Maine sawmills. The original 600-square-foot prototype, unveiled in 2022, has survived three Maine winters and continues to be monitored for durability. Researchers say the material absorbs an estimated 46 tons of carbon dioxide per unit, making the homes carbon-negative over their lifespan.

From Prototype to Production

The leap from one printed house to nine required a bigger printer. UMaine unveiled its Factory of the Future 1.0 in April 2024, a machine four times larger than its 2019 record-holding printer. That scale is what makes the Penquis partnership possible. The new system prints the floors, walls, and roof as six-sided modules, which are then transported to the site and secured on a foundation in roughly half a day.

University President Joan Ferrini-Mundy and Maine Governor Janet Mills have both highlighted the project as a way to address the state's shortage of affordable housing while creating new markets for Maine's forestry industry. The homes are designed to meet or exceed building codes, with fire-resistant materials and structural testing feeding into each successive build.

How It Compares to Other 3D Printed Housing Projects

UMaine is not the only organization printing houses at scale. ICON's Vulcan printer is already underwriting a 100-home community near Austin, Texas, where 3D printing handles the first floor and conventional framing finishes the rest. In Houston, HiveASMBLD is building a 13-acre affordable housing development with 3D printed ground floors and panelized upper levels.

UMaine's approach differs in material and climate. The wood-fiber composite is tailored for cold northern climates, and the modular design allows for faster on-site assembly. The university is not positioning itself as a homebuilder; it is testing whether BioHome3D can become a licensed technology that other builders adopt.

What Comes Next

The first homes are expected to break ground in late 2026. Each build will generate data on cost, speed, and long-term performance, which the research team will use to refine the next round. If the nine-home pilot succeeds, the goal is to scale further across Maine and eventually license the process to other cold-climate states.

The project is a practical test of whether 3D printed housing can move past novelty and into the mainstream. Maine needs the homes. UMaine needs the proof of concept. If the numbers work, other universities and manufacturers will take notice.